Flat grade share
- Martian Invasion of Races 26K
- 96.8% Favoured
Martian Invasion of Races Marathon vs Martian Invasion of Races 26K
A data-led head-to-head using sourced race facts and available derived figures under one published methodology.
Data current as ofMartian Invasion of Races Marathon or Martian Invasion of Races 26K — which comes out ahead?
Martian Invasion of Races 26K has the stronger available profile on flat grade share, course flatness and scenery score.
Route comparison snapshot
Martian Invasion of Races Marathon
- Mapped route
- Held
- Elevation profile
- Held
- course flatness
- 0.1%
- flat grade share
- 94.9%
- lower ascent
- 124 m
- climbing density
- 2.9 m/km
- net elevation
- 0 m
- maximum grade
- 6.6%
Martian Invasion of Races 26K
- Mapped route
- Held
- Elevation profile
- Held
- course flatness
- 0.1% Favoured
- flat grade share
- 96.8% Favoured
- lower ascent
- 65 m
- climbing density
- 2.5 m/km
- net elevation
- 0 m
- maximum grade
- 5.4%
| Metric | Martian Invasion of Races Marathon | Martian Invasion of Races 26K |
|---|---|---|
| Flat grade share | 94.9% | 96.8% ✓ |
| GAP factor (% slower than flat) | 0.1% | 0.1% ✓ |
| Uphill share | 2.4% | 1.2% |
| Steep-up share | 0.1% | 0.0% |
| Downhill share | 2.7% | 2.0% |
| Total ascent (m) | 124 m | 65 m |
| Climbing density (m/km) | 2.9 m/km | 2.5 m/km |
| Longest climb length (m) | 210 m | 1,350 m |
| Longest climb gain (m) | 7 m | 7 m |
| Longest climb average grade | 3.4% | 0.5% |
| Total descent (m) | 124 m | 65 m |
| Net elevation (m) | 0 m | 0 m |
| Max absolute grade | 6.6% | 5.4% |
| Start elevation (m) | 178 m | 178 m |
| Finish elevation (m) | 178 m | 178 m |
| Scenic score | 30/100 | 64/100 ✓ |
| Conditions | 81/100 | 81/100 |
GAP factor (% slower than flat)
- Martian Invasion of Races 26K
- 0.1% Favoured
Uphill share
Steep-up share
Downhill share
Total ascent (m)
Climbing density (m/km)
- Martian Invasion of Races 26K
- 2.5 m/km
Longest climb length (m)
Longest climb gain (m)
Longest climb average grade
Total descent (m)
Net elevation (m)
Max absolute grade
Start elevation (m)
Finish elevation (m)
Scenic score
- Martian Invasion of Races 26K
- 64/100 Favoured
Conditions
Only metrics available for at least one side are shown. A ✓ marks the better value for each metric (higher-is-better aware). Scores are out of 100 when available. Ascent, climbing density, max absolute grade and median finish describe course or field context and are not marked as better or worse.
Same-distance comparisons are most meaningful; cross-distance metrics are contextual.
Race facts that change the decision
| Fact | Martian Invasion of Races Marathon | Martian Invasion of Races 26K |
|---|---|---|
| Schedule | Exact race date not confirmed. Event weekend starts 2026-04-11 (legacy event-level date). | Exact race date not confirmed. Event weekend starts 2026-04-11 (legacy event-level date). |
| Location | Dearborn, Michigan | Dearborn, Michigan |
| Actual distance | 42.2 km | 26 km |
| raceindex.org mapped route held | Held | Held |
| raceindex.org elevation profile held | Held | Held |
| Course type | Laps | Out And Back |
| Surface | Paved roads and paved park paths | Paved roads and paved park paths |
| Elevation character | Pancake Flat | Unavailable |
| Terrain | Road | Road |
| Scenery | Parkland, City, Riverside | Riverside, Parkland, Countryside, City |
| Atmosphere | Festival, Community | Festival, Community |
| Technicality | Non Technical | Unavailable |
| Total ascent | 124 m | 65 m |
| Climbing density | 2.9 m/km | 2.5 m/km |
| Total descent | 124 m | 65 m |
| Net elevation | 0 m | 0 m |
| Max absolute grade | 6.6% | 5.4% |
| Flat grade share | 94.9% | 96.8% |
| GAP factor | 0.1% | 0.1% |
| Cutoff | 6:30:00 | Unavailable |
| Latest finishers | 147 | Unavailable |
| Entry model | Open | Open |
| Qualifying status | Boston_equivalent | Unavailable |
Schedule
- Martian Invasion of Races Marathon
Exact race date not confirmed. Event weekend starts 2026-04-11 (legacy event-level date).
- Martian Invasion of Races 26K
Exact race date not confirmed. Event weekend starts 2026-04-11 (legacy event-level date).
Location
- Martian Invasion of Races Marathon
- Dearborn, Michigan
- Martian Invasion of Races 26K
- Dearborn, Michigan
Actual distance
- Martian Invasion of Races Marathon
- 42.2 km
- Martian Invasion of Races 26K
- 26 km
raceindex.org mapped route held
- Martian Invasion of Races Marathon
- Held
- Martian Invasion of Races 26K
- Held
raceindex.org elevation profile held
- Martian Invasion of Races Marathon
- Held
- Martian Invasion of Races 26K
- Held
Course type
- Martian Invasion of Races Marathon
- Laps
- Martian Invasion of Races 26K
- Out And Back
Surface
- Martian Invasion of Races Marathon
- Paved roads and paved park paths
- Martian Invasion of Races 26K
- Paved roads and paved park paths
Elevation character
- Martian Invasion of Races Marathon
- Pancake Flat
- Martian Invasion of Races 26K
- Unavailable
Terrain
- Martian Invasion of Races Marathon
- Road
- Martian Invasion of Races 26K
- Road
Scenery
- Martian Invasion of Races Marathon
- Parkland, City, Riverside
- Martian Invasion of Races 26K
- Riverside, Parkland, Countryside, City
Atmosphere
- Martian Invasion of Races Marathon
- Festival, Community
- Martian Invasion of Races 26K
- Festival, Community
Technicality
- Martian Invasion of Races Marathon
- Non Technical
- Martian Invasion of Races 26K
- Unavailable
Total ascent
- Martian Invasion of Races Marathon
- 124 m
- Martian Invasion of Races 26K
- 65 m
Climbing density
- Martian Invasion of Races Marathon
- 2.9 m/km
- Martian Invasion of Races 26K
- 2.5 m/km
Total descent
- Martian Invasion of Races Marathon
- 124 m
- Martian Invasion of Races 26K
- 65 m
Net elevation
- Martian Invasion of Races Marathon
- 0 m
- Martian Invasion of Races 26K
- 0 m
Max absolute grade
- Martian Invasion of Races Marathon
- 6.6%
- Martian Invasion of Races 26K
- 5.4%
Flat grade share
- Martian Invasion of Races Marathon
- 94.9%
- Martian Invasion of Races 26K
- 96.8%
GAP factor
- Martian Invasion of Races Marathon
- 0.1%
- Martian Invasion of Races 26K
- 0.1%
Cutoff
- Martian Invasion of Races Marathon
- 6:30:00
- Martian Invasion of Races 26K
- Unavailable
Latest finishers
- Martian Invasion of Races Marathon
- 147
- Martian Invasion of Races 26K
- Unavailable
Entry model
- Martian Invasion of Races Marathon
- Open
- Martian Invasion of Races 26K
- Open
Qualifying status
- Martian Invasion of Races Marathon
- Boston_equivalent
- Martian Invasion of Races 26K
- Unavailable
Facts are shown only when they exist in the sourced race record; Not held means no sourced value is held for that race.
Common questions
Which is flatter, Martian Invasion of Races Marathon or Martian Invasion of Races 26K?
Martian Invasion of Races 26K has the lower GAP factor, making it the flatter course on our route model and more favourable on gradient alone.