Flat grade share
- Montana Marathon (Billings) 5K
- 88.6% Favoured
Montana Marathon (Billings) 10K vs Montana Marathon (Billings) 5K
A data-led head-to-head using sourced race facts and available derived figures under one published methodology.
Data current as ofMontana Marathon (Billings) 10K or Montana Marathon (Billings) 5K — which comes out ahead?
Montana Marathon (Billings) 5K has the stronger available profile on flat grade share and course flatness.
Route comparison snapshot
Montana Marathon (Billings) 10K
- Mapped route
- Held
- Elevation profile
- Held
- course flatness
- -2.6%
- flat grade share
- 87.8%
- lower ascent
- 13 m
- climbing density
- 1.3 m/km
- net elevation
- -51 m
- maximum grade
- 4.0%
Montana Marathon (Billings) 5K
- Mapped route
- Held
- Elevation profile
- Held
- course flatness
- -2.6% Favoured
- flat grade share
- 88.6% Favoured
- lower ascent
- 8 m
- climbing density
- 1.6 m/km
- net elevation
- -26 m
- maximum grade
- 3.4%
| Metric | Montana Marathon (Billings) 10K | Montana Marathon (Billings) 5K |
|---|---|---|
| Flat grade share | 87.8% | 88.6% ✓ |
| GAP factor (% slower than flat) | -2.6% | -2.6% ✓ |
| Uphill share | 3.9% | 0.6% |
| Steep-up share | 0.0% | 0.0% |
| Downhill share | 8.2% | 10.8% |
| Total ascent (m) | 13 m | 8 m |
| Climbing density (m/km) | 1.3 m/km | 1.6 m/km |
| Longest climb length (m) | 510 m | 380 m |
| Longest climb gain (m) | 12 m | 3 m |
| Longest climb average grade | 2.3% | 0.8% |
| Total descent (m) | 64 m | 34 m |
| Net elevation (m) | -51 m | -26 m |
| Max absolute grade | 4.0% | 3.4% |
| Start elevation (m) | 1,010 m | 984 m |
| Finish elevation (m) | 959 m | 958 m |
| Scenic score | 88/100 | 88/100 |
| Conditions | 71/100 | 71/100 |
GAP factor (% slower than flat)
- Montana Marathon (Billings) 5K
- -2.6% Favoured
Uphill share
Steep-up share
Downhill share
Total ascent (m)
Climbing density (m/km)
- Montana Marathon (Billings) 10K
- 1.3 m/km
- Montana Marathon (Billings) 5K
- 1.6 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 | Montana Marathon (Billings) 10K | Montana Marathon (Billings) 5K |
|---|---|---|
| Schedule | Exact race date not confirmed. Event weekend starts 2026-09-20 (legacy event-level date). | Exact race date not confirmed. Event weekend starts 2026-09-20 (legacy event-level date). |
| Location | Billings, Montana | Billings, Montana |
| Actual distance | 10 km | 5 km |
| raceindex.org mapped route held | Held | Held |
| raceindex.org elevation profile held | Held | Held |
| Scenery | Waterfront, Parkland, Countryside, Mountain, Canyon, City | Waterfront, Parkland, Countryside, Mountain, Canyon, City |
| Total ascent | 13 m | 8 m |
| Climbing density | 1.3 m/km | 1.6 m/km |
| Total descent | 64 m | 34 m |
| Net elevation | -51 m | -26 m |
| Max absolute grade | 4.0% | 3.4% |
| Flat grade share | 87.8% | 88.6% |
| GAP factor | -2.6% | -2.6% |
| Entry model | Open | Open |
Schedule
- Montana Marathon (Billings) 10K
Exact race date not confirmed. Event weekend starts 2026-09-20 (legacy event-level date).
- Montana Marathon (Billings) 5K
Exact race date not confirmed. Event weekend starts 2026-09-20 (legacy event-level date).
Location
- Montana Marathon (Billings) 10K
- Billings, Montana
- Montana Marathon (Billings) 5K
- Billings, Montana
Actual distance
- Montana Marathon (Billings) 10K
- 10 km
- Montana Marathon (Billings) 5K
- 5 km
raceindex.org mapped route held
- Montana Marathon (Billings) 10K
- Held
- Montana Marathon (Billings) 5K
- Held
raceindex.org elevation profile held
- Montana Marathon (Billings) 10K
- Held
- Montana Marathon (Billings) 5K
- Held
Scenery
- Montana Marathon (Billings) 10K
- Waterfront, Parkland, Countryside, Mountain, Canyon, City
- Montana Marathon (Billings) 5K
- Waterfront, Parkland, Countryside, Mountain, Canyon, City
Total ascent
- Montana Marathon (Billings) 10K
- 13 m
- Montana Marathon (Billings) 5K
- 8 m
Climbing density
- Montana Marathon (Billings) 10K
- 1.3 m/km
- Montana Marathon (Billings) 5K
- 1.6 m/km
Total descent
- Montana Marathon (Billings) 10K
- 64 m
- Montana Marathon (Billings) 5K
- 34 m
Net elevation
- Montana Marathon (Billings) 10K
- -51 m
- Montana Marathon (Billings) 5K
- -26 m
Max absolute grade
- Montana Marathon (Billings) 10K
- 4.0%
- Montana Marathon (Billings) 5K
- 3.4%
Flat grade share
- Montana Marathon (Billings) 10K
- 87.8%
- Montana Marathon (Billings) 5K
- 88.6%
GAP factor
- Montana Marathon (Billings) 10K
- -2.6%
- Montana Marathon (Billings) 5K
- -2.6%
Entry model
- Montana Marathon (Billings) 10K
- Open
- Montana Marathon (Billings) 5K
- 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, Montana Marathon (Billings) 10K or Montana Marathon (Billings) 5K?
Montana Marathon (Billings) 5K has the lower GAP factor, making it the flatter course on our route model and more favourable on gradient alone.