05 DECSCORE
Las Vegas Great Santa Run
Nevada
Event weekend
- Character
- Flat
- City
- Waterfront
- Forest
99/100Conditions
Weather-aware race search
Best race-day conditions for running races
Find races where raceindex.org holds typical race-day temperature, wind and rain signals. Use the conditions score as a pacing and comfort check, then open each race page for the route, cost, logistics and entry context.
Conditions coverage
3,034Race pages with conditions scores13Conditions ranking pages1,379With route maps755With elevation profiles
Clean ranking URLs
Conditions rankings by distance
Best race-day conditions marathons
446 qualifying marathon race pages ranked by typical race-day conditions.
Best race-day conditions half marathons
773 qualifying half marathon race pages ranked by typical race-day conditions.
Best race-day conditions 10ks
527 qualifying 10k race pages ranked by typical race-day conditions.
Best race-day conditions 5ks
558 qualifying 5k race pages ranked by typical race-day conditions.
Best race-day conditions ultramarathons
244 qualifying ultramarathon race pages ranked by typical race-day conditions.
Best race-day conditions relays
200 qualifying relay race pages ranked by typical race-day conditions.
Best race-day conditions 10 miles
32 qualifying 10 mile race pages ranked by typical race-day conditions.
Best race-day conditions 5 miles
23 qualifying 5 mile race pages ranked by typical race-day conditions.
Best race-day conditions 15ks
17 qualifying 15k race pages ranked by typical race-day conditions.
Best race-day conditions 12ks
17 qualifying 12k race pages ranked by typical race-day conditions.
Best race-day conditions 8ks
21 qualifying 8k race pages ranked by typical race-day conditions.
Best race-day conditions miles
11 qualifying mile race pages ranked by typical race-day conditions.
Best race-day conditions others
165 qualifying other race pages ranked by typical race-day conditions.
Top condition-scored races
Races with strong typical conditions
07 NOVSCORE
Moab Trail Marathon
Utah
Event weekend
- Character
- Canyon
- Countryside
- Mountain
- Parkland
99/100Conditions
07 NOVMAP
Moab Trail Marathon
Utah
Event weekend
- Map
- Profile
- Character
GPS trace: 1,337 pts / moabtrailmarathon.com
- Mountainous
- Desert
- Canyon
- Countryside
- Ascent
- 1,404 m
- m/km
- 33.3 m/km
99/100Conditions
07 NOVSCORE
Moab Trail Marathon
Utah
Event weekend
- Character
- Countryside
- Mountain
- Parkland
- Desert
99/100Conditions
25 APRSCORE
Biggest Little Half Marathon, 10K & 5K
Nevada
Event weekend
- Character
- City
- Waterfront
- Riverside
- Parkland
98/100Conditions
25 APRSCORE
Biggest Little Half Marathon, 10K & 5K
Nevada
Event weekend
- Character
- Flat
- City
- Waterfront
- Riverside
98/100Conditions
25 APRSCORE
Biggest Little Half Marathon, 10K & 5K
Nevada
Event weekend
- Character
- City
- Waterfront
- Riverside
- Parkland
98/100Conditions
14 NOVSCORE
Snow Canyon Half Marathon (St. George)
Utah
Event weekend
- Character
- Net Downhill
- Canyon
- Parkland
- Countryside
98/100Conditions
Race cards show the available conditions score. Route maps, elevation profiles and cost signals appear only where those separate inputs are held.
Strongest conditions score by distance
| Distance | Race | Conditions | Route context |
|---|---|---|---|
| 5K | Las Vegas Great Santa Run | 99/100 | Race page has conditions details |
| Half Marathon | Moab Trail Marathon | 99/100 | Race page has conditions details |
| Marathon | Moab Trail Marathon | 99/100 | Route map available |
| 10K | Moab Trail Marathon | 99/100 | Race page has conditions details |
| Ultramarathon | Tucson Marathon | 97/100 | Route map available |
| Relay | Tucson Marathon | 97/100 | Route map available |
| Other | Escape from Prison Hill (Carson City) | 96/100 | Route map available |
| 12K | Don't Fence Me In Trail Run | 94/100 | Race page has conditions details |
How to use race-day conditions
Scoring method
Read how conditions fit into the wider scoring model and why incomplete signals stay unpublished.
Route maps
Check the route before treating good conditions as a PB signal.
Value and cost
Compare conditions with entry fees, true-cost estimates and value rankings.
Runner questions
Find answer paths for routes, elevation, value, dates, places and score status.
Evidence controls
- 3,015 condition-scored race pages have source-backed dates.
- Conditions scores are shown separately from PB potential, route profile and cost.
- Distance ranking URLs publish only when enough races have the required conditions signal.
- Race pages without condition data are omitted from this hub rather than filled with generic weather text.
Race-day conditions questions
Which running races have the best typical race-day conditions?
raceindex.org currently holds race-day conditions scores for 3,034 race pages. The highest-scoring rows on this page are sorted by the available conditions score, and distance-specific rankings link through when enough races clear the guardrail.
What does a race-day conditions score measure?
The score is based on typical race-date temperature, wind and rainfall signals where those inputs are available. It is a pacing signal, not a forecast for the next edition.
Should I choose a race only because it has good conditions?
No. Use conditions alongside route profile, distance, cost, cut-off time, logistics and entry model. The race page shows those signals separately when they are held.
Why do some races not appear here?
Races are omitted from this hub when raceindex.org does not yet hold enough conditions data for a useful public score. Missing values are not inferred.