Flat grade share
- Martian Invasion of Races Half Marathon
- 96.1% Favoured
Martian Invasion of Races Half Marathon vs Martian Invasion of Races 10K
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 Half Marathon or Martian Invasion of Races 10K — which comes out ahead?
Martian Invasion of Races Half Marathon has the stronger available profile on flat grade share and course flatness.
Route comparison snapshot
Martian Invasion of Races Half Marathon
- Mapped route
- Held
- Elevation profile
- Held
- course flatness
- 0.1% Favoured
- flat grade share
- 96.1% Favoured
- lower ascent
- 58 m
- climbing density
- 2.7 m/km
- net elevation
- 0 m
- maximum grade
- 5.4%
Martian Invasion of Races 10K
- Mapped route
- Held
- Elevation profile
- Held
- course flatness
- 0.2%
- flat grade share
- 93.0%
- lower ascent
- 31 m
- climbing density
- 3.1 m/km
- net elevation
- 0 m
- maximum grade
- 5.3%
| Metric | Martian Invasion of Races Half Marathon | Martian Invasion of Races 10K |
|---|---|---|
| Flat grade share | 96.1% ✓ | 93.0% |
| GAP factor (% slower than flat) | 0.1% ✓ | 0.2% |
| Uphill share | 1.4% | 2.1% |
| Steep-up share | 0.0% | 0.0% |
| Downhill share | 2.5% | 4.9% |
| Total ascent (m) | 58 m | 31 m |
| Climbing density (m/km) | 2.7 m/km | 3.1 m/km |
| Longest climb length (m) | 1,360 m | 1,360 m |
| Longest climb gain (m) | 7 m | 7 m |
| Longest climb average grade | 0.5% | 0.5% |
| Total descent (m) | 58 m | 31 m |
| Net elevation (m) | 0 m | 0 m |
| Max absolute grade | 5.4% | 5.3% |
| Start elevation (m) | 178 m | 178 m |
| Finish elevation (m) | 178 m | 178 m |
| Scenic score | 30/100 | 30/100 |
| Conditions | 81/100 | 81/100 |
GAP factor (% slower than flat)
- Martian Invasion of Races Half Marathon
- 0.1% Favoured
Uphill share
Steep-up share
Downhill share
Total ascent (m)
Climbing density (m/km)
- Martian Invasion of Races 10K
- 3.1 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
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 Half Marathon | Martian Invasion of Races 10K |
|---|---|---|
| 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 | 21.1 km | 10 km |
| raceindex.org mapped route held | Held | Held |
| raceindex.org elevation profile held | Held | Held |
| Surface | Paved roads and paved park paths | Paved roads and paved park paths |
| Elevation character | Pancake Flat | Unavailable |
| Terrain | Road | Unavailable |
| Scenery | Parkland, City, Riverside | Parkland, City, Riverside |
| Atmosphere | Festival, Community | Festival, Community |
| Total ascent | 58 m | 31 m |
| Climbing density | 2.7 m/km | 3.1 m/km |
| Total descent | 58 m | 31 m |
| Net elevation | 0 m | 0 m |
| Max absolute grade | 5.4% | 5.3% |
| Flat grade share | 96.1% | 93.0% |
| GAP factor | 0.1% | 0.2% |
| Cutoff | 4:45:00 | Unavailable |
| Entry model | Open | Open |
Schedule
- Martian Invasion of Races Half Marathon
Exact race date not confirmed. Event weekend starts 2026-04-11 (legacy event-level date).
- Martian Invasion of Races 10K
Exact race date not confirmed. Event weekend starts 2026-04-11 (legacy event-level date).
Location
- Martian Invasion of Races Half Marathon
- Dearborn, Michigan
- Martian Invasion of Races 10K
- Dearborn, Michigan
Actual distance
- Martian Invasion of Races Half Marathon
- 21.1 km
- Martian Invasion of Races 10K
- 10 km
raceindex.org mapped route held
- Martian Invasion of Races Half Marathon
- Held
- Martian Invasion of Races 10K
- Held
raceindex.org elevation profile held
- Martian Invasion of Races Half Marathon
- Held
- Martian Invasion of Races 10K
- Held
Surface
- Martian Invasion of Races Half Marathon
- Paved roads and paved park paths
- Martian Invasion of Races 10K
- Paved roads and paved park paths
Elevation character
- Martian Invasion of Races Half Marathon
- Pancake Flat
- Martian Invasion of Races 10K
- Unavailable
Terrain
- Martian Invasion of Races Half Marathon
- Road
- Martian Invasion of Races 10K
- Unavailable
Scenery
- Martian Invasion of Races Half Marathon
- Parkland, City, Riverside
- Martian Invasion of Races 10K
- Parkland, City, Riverside
Atmosphere
- Martian Invasion of Races Half Marathon
- Festival, Community
- Martian Invasion of Races 10K
- Festival, Community
Total ascent
- Martian Invasion of Races Half Marathon
- 58 m
- Martian Invasion of Races 10K
- 31 m
Climbing density
- Martian Invasion of Races Half Marathon
- 2.7 m/km
- Martian Invasion of Races 10K
- 3.1 m/km
Total descent
- Martian Invasion of Races Half Marathon
- 58 m
- Martian Invasion of Races 10K
- 31 m
Net elevation
- Martian Invasion of Races Half Marathon
- 0 m
- Martian Invasion of Races 10K
- 0 m
Max absolute grade
- Martian Invasion of Races Half Marathon
- 5.4%
- Martian Invasion of Races 10K
- 5.3%
Flat grade share
- Martian Invasion of Races Half Marathon
- 96.1%
- Martian Invasion of Races 10K
- 93.0%
GAP factor
- Martian Invasion of Races Half Marathon
- 0.1%
- Martian Invasion of Races 10K
- 0.2%
Cutoff
- Martian Invasion of Races Half Marathon
- 4:45:00
- Martian Invasion of Races 10K
- Unavailable
Entry model
- Martian Invasion of Races Half Marathon
- Open
- Martian Invasion of Races 10K
- Open
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 Half Marathon or Martian Invasion of Races 10K?
Martian Invasion of Races Half Marathon has the lower GAP factor, making it the flatter course on our route model and more favourable on gradient alone.