Build a race comparison from route evidence, elevation, value, cost and score metrics used across raceindex.org, or start from curated head-to-heads.
High-signal head-to-heads for available route evidence, value, support and race-day context.
London and New York City marathon majors compared for runners weighing ballot demand, race-day atmosphere and available route evidence.
London and Boston marathon majors compared by qualifying context, entry evidence, route evidence and race-day logistics.
London and Chicago marathon majors compared by course context, field logistics and source-backed race facts.
Berlin and Valencia marathon alternatives compared for runners prioritising fast courses, route evidence and race-day logistics.
Berlin and Rotterdam marathon alternatives compared by route-map availability, course character and fast-course evidence.
High-demand UK half marathon alternatives compared by field atmosphere, route evidence, entry model and race-day logistics.
Bounded groups of canonical head-to-head pages for route speed, elevation, value, conditions and same-event choices.
34 curated head-to-head pages: Named race alternatives selected only when both race pages have enough source-backed comparison evidence.
23 curated head-to-head pages: Head-to-heads for runners comparing low-GAP, flat or PB-potential routes using available route evidence.
48 curated head-to-head pages: Course-shape comparisons for ascent, climb density, steepness and grade-share trade-offs.
7 curated head-to-head pages: Race comparisons where entry fee or modelled total cost is the main decision signal.
13 curated head-to-head pages: Race comparisons where typical temperature, wind or rain conditions are part of the decision evidence.
48 curated head-to-head pages: Sibling race distances from the same event, compared for runners deciding which distance to enter.
Showing 3233 of 3233 races. Top 300 are selectable below, ordered by best comparison evidence.
Every indexable head-to-head currently backed by the shared comparison collection and exposed in the sitemap.
Great North Run and London Landmarks half marathon alternatives compared by route context, crowd support and available evidence.
London half marathon alternatives compared by parkland/city course character, entry evidence and route-map availability.
Major UK city half marathons compared by field size, route evidence, course profile and race-day context.
Welsh half marathon alternatives compared by coastal/city course context, entry evidence and route signals.
Southern UK spring half marathon alternatives compared by course profile, field logistics and available route evidence.
University city half marathon alternatives compared by route evidence, city-course character and race-day logistics.
Large UK and Ireland half marathon alternatives compared by atmosphere, entry evidence and route context.
High-demand UK marathon choice comparing London and Manchester on available route, entry, cost and evidence signals.
London and Brighton marathon alternatives compared for runners weighing major-field atmosphere, coastal course context and entry evidence.
London and Edinburgh marathon alternatives compared by available course profile, logistics and source-backed race facts.
Named UK spring marathon alternatives compared by route evidence, course profile, cost and race-day context.
Fast UK marathon alternatives compared by GAP factor, net elevation, support and available cost evidence.
Coastal and net-downhill marathon alternatives compared with route evidence and race-day logistics.
World marathon major alternatives compared with transparent route-map availability, ballot and race-day evidence.
Large European capital marathons compared by available route evidence, entry model, cost signals and race character.
Berlin and Paris marathon alternatives compared for runners choosing between fast-city major courses.
Berlin and Chicago marathon majors compared by route evidence availability, course character and race-day logistics.
New York City and Chicago marathon majors compared for runners weighing atmosphere, course shape and entry evidence.
Boston and New York City marathon majors compared using available qualifying, route and race-day evidence.
Boston and Chicago marathon majors compared by qualifying context, route evidence and race-day signals.
Fast European marathon alternatives compared with stored route geometry, elevation profile and source-backed logistics where available.
Valencia and Rotterdam marathon alternatives compared for runners prioritising flat fast courses and route evidence.
Amsterdam and Rotterdam marathon alternatives compared by route-map availability, course character and entry evidence.
Vienna and Copenhagen marathon alternatives compared with route geometry, elevation and race logistics side by side.
Nordic capital marathon alternatives compared by available route evidence, course profile and race-day context.
Scottish marathon alternatives compared for runners choosing between destination scenery and city-race logistics.
US East Coast marathon alternatives compared by course context, field logistics and available evidence.
Large destination marathon alternatives compared by cut-off, race-day context and available route evidence.
Lowest-GAP routes compared for fastest available course shape.
Flattest mapped routes compared by grade-share evidence.
Lowest-ascent options compared with route profile and cost context.
Hilliest mapped routes compared for runners who want climbing.
Steepest available routes compared by maximum absolute grade.
Lowest true-cost choices compared in context rather than by fee alone.
Best race-day conditions compared with route, cost and evidence context.
Lowest-GAP routes compared for fastest available course shape.
Flattest mapped routes compared by grade-share evidence.
Lowest-ascent options compared with route profile and cost context.
Hilliest mapped routes compared for runners who want climbing.
Steepest available routes compared by maximum absolute grade.
Lowest true-cost choices compared in context rather than by fee alone.
Best race-day conditions compared with route, cost and evidence context.
Lowest-GAP routes compared for fastest available course shape.
Flattest mapped routes compared by grade-share evidence.
Lowest-ascent options compared with route profile and cost context.
Hilliest mapped routes compared for runners who want climbing.
Steepest available routes compared by maximum absolute grade.
Lowest true-cost choices compared in context rather than by fee alone.
Best race-day conditions compared with route, cost and evidence context.
Lowest-GAP routes compared for fastest available course shape.
Flattest mapped routes compared by grade-share evidence.
Lowest-ascent options compared with route profile and cost context.
Hilliest mapped routes compared for runners who want climbing.
Steepest available routes compared by maximum absolute grade.
Lowest true-cost choices compared in context rather than by fee alone.
Best race-day conditions compared with route, cost and evidence context.
Lowest-GAP routes compared for fastest available course shape.
Flattest mapped routes compared by grade-share evidence.
Lowest-ascent options compared with route profile and cost context.
Hilliest mapped routes compared for runners who want climbing.
Most climbing-dense routes compared by ascent per kilometre.
Steepest available routes compared by maximum absolute grade.
Lowest true-cost choices compared in context rather than by fee alone.
PB-potential alternatives compared with route and field context.
Best race-day conditions compared with route, cost and evidence context.
Lowest-GAP routes compared for fastest available course shape.
Flattest mapped routes compared by grade-share evidence.
Lowest-ascent options compared with route profile and cost context.
Hilliest mapped routes compared for runners who want climbing.
Most climbing-dense routes compared by ascent per kilometre.
Steepest available routes compared by maximum absolute grade.
Lowest true-cost choices compared in context rather than by fee alone.
Best race-day conditions compared with route, cost and evidence context.
Lowest-GAP routes compared for fastest available course shape.
Flattest mapped routes compared by grade-share evidence.
Hilliest mapped routes compared for runners who want climbing.
Steepest available routes compared by maximum absolute grade.
Best race-day conditions compared with route, cost and evidence context.
Lowest-GAP routes compared for fastest available course shape.
Hilliest mapped routes compared for runners who want climbing.
Best race-day conditions compared with route, cost and evidence context.
Lowest-GAP routes compared for fastest available course shape.
Flattest mapped routes compared by grade-share evidence.
Hilliest mapped routes compared for runners who want climbing.
Best race-day conditions compared with route, cost and evidence context.
Lowest-GAP routes compared for fastest available course shape.
Flattest mapped routes compared by grade-share evidence.
Lowest-ascent options compared with route profile and cost context.
Hilliest mapped routes compared for runners who want climbing.
Steepest available routes compared by maximum absolute grade.
Best race-day conditions compared with route, cost and evidence context.
Lowest-GAP routes compared for fastest available course shape.
Hilliest mapped routes compared for runners who want climbing.
Best race-day conditions compared with route, cost and evidence context.
Best race-day conditions compared with route, cost and evidence context.
Lowest-GAP routes compared for fastest available course shape.
Flattest mapped routes compared by grade-share evidence.
Lowest-ascent options compared with route profile and cost context.
Hilliest mapped routes compared for runners who want climbing.
Most climbing-dense routes compared by ascent per kilometre.
Steepest available routes compared by maximum absolute grade.
Lowest true-cost choices compared in context rather than by fee alone.
Best race-day conditions compared with route, cost and evidence context.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Same-event distance choice with route, fee and available course-profile signals side by side.
Pairs chosen specifically for GAP factor, total ascent, steepness and route evidence trade-offs.
Most net-downhill marathon routes compared with ascent, GAP and cost context.
Most net-downhill half marathons compared for course shape and support.
Contrasts for runners deciding between flat speed, climbing, steep grade and overall course character.
Flat-vs-hilly marathon trade-off using flat grade share, total ascent, grade and cost context.
Low-ascent vs steep-grade marathon comparison for runners choosing by course shape.
Net-downhill vs high-ascent marathon trade-off using measured elevation profile signals.
Flat-vs-hilly half marathon trade-off with available route evidence and entry context.
Low-ascent vs steep-grade 10K comparison using measured profile signals where available.
Sibling races from the same event, useful when the decision is which distance to enter.
Pairs selected for scenery signals, with course profile and cost still visible in the comparison.
Scenic marathon options compared with available route evidence and cost context.
Scenic half marathons compared with available route evidence and cost context.
Scenic 10Ks compared with available route evidence and cost context.
Nearer race dates with enough route or cost evidence to make a useful side-by-side choice.
Soonest upcoming marathons with route or cost evidence compared side by side.
Soonest upcoming half marathons with route or cost evidence compared side by side.
Soonest upcoming 10Ks with route or cost evidence compared side by side.
Lower-entry-cost options compared in context rather than by fee alone.
Lower-entry-cost half marathons compared with available scoring context.
Lower-entry-cost 10Ks compared with available scoring context.
Marathons ranked by available route evidence, elevation, value and available timing data.
Half Marathons ranked by available route evidence, elevation, value and available timing data.
10k ranked by available route evidence, elevation, value and available timing data.
5k ranked by available route evidence, elevation, value and available timing data.
Ultras ranked by available route evidence, elevation, value and available timing data.
Relays ranked by available route evidence, elevation, value and available timing data.
10 Mile ranked by available route evidence, elevation, value and available timing data.
5 Mile ranked by available route evidence, elevation, value and available timing data.
15k ranked by available route evidence, elevation, value and available timing data.
12k ranked by available route evidence, elevation, value and available timing data.
8k ranked by available route evidence, elevation, value and available timing data.
Mile ranked by available route evidence, elevation, value and available timing data.
Other ranked by available route evidence, elevation, value and available timing data.
Yes. The comparison builder can create a head-to-head URL for two selected races. The sitemap exposes a finite curated set of high-signal comparison pages, while custom builder states remain navigable from the tool.
Comparison rows show only source-backed signals that exist for the selected races. Route maps, elevation profiles, fees, true-cost estimates, race-day conditions and score fields stay unavailable until their evidence or methodology gate is present.
Use the comparison intent control and shortcuts to order the builder by the relevant metric, then compare the top two matches or choose a specific pair. The same metrics also link back to guarded ranking pages where enough races qualify.
Curated comparison pages are indexable head-to-heads selected from the shared comparison collection and exposed in the sitemap. The interactive builder is for narrowing the race set by distance, route evidence, terrain, cost, date and route-profile metrics.