Flat grade share
- Idaho Falls Marathon
- 96.4% Favoured
Idaho Falls Marathon vs Sunrise Marathon | Halfmarathon Brno
A data-led head-to-head using sourced race facts and available derived figures under one published methodology.
Data current as ofIdaho Falls Marathon or Sunrise Marathon | Halfmarathon Brno — which comes out ahead?
Idaho Falls Marathon and Sunrise Marathon | Halfmarathon Brno split the available advantages, so the better choice depends on which metric matters most to the runner.
Route comparison snapshot
Idaho Falls Marathon
- Mapped route
- Held
- Elevation profile
- Held
- course flatness
- 0.3%
- flat grade share
- 96.4% Favoured
- lower ascent
- 69 m
- climbing density
- 1.6 m/km
- net elevation
- 15 m
- maximum grade
- 10.9%
Sunrise Marathon | Halfmarathon Brno
- Mapped route
- Held
- Elevation profile
- Held
- course flatness
- 0.2% Favoured
- flat grade share
- 88.9%
- lower ascent
- 176 m
- climbing density
- 4.2 m/km
- net elevation
- -0 m
- maximum grade
- 6.4%
| Metric | Idaho Falls Marathon | Sunrise Marathon | Halfmarathon Brno |
|---|---|---|
| Flat grade share | 96.4% ✓ | 88.9% |
| GAP factor (% slower than flat) | 0.3% | 0.2% ✓ |
| Uphill share | 1.8% | 5.9% |
| Steep-up share | 0.1% | 0.4% |
| Downhill share | 1.8% | 5.2% |
| Total ascent (m) | 69 m | 176 m |
| Climbing density (m/km) | 1.6 m/km | 4.2 m/km |
| Longest climb length (m) | 530 m | 280 m |
| Longest climb gain (m) | 9 m | 7 m |
| Longest climb average grade | 1.7% | 2.3% |
| Total descent (m) | 52 m | 176 m |
| Net elevation (m) | 15 m | -0 m |
| Max absolute grade | 10.9% | 6.4% |
| Start elevation (m) | 1,416 m | 189 m |
| Finish elevation (m) | 1,431 m | 189 m |
| Scenic score | 83/100 ✓ | 78/100 |
| Conditions | 43/100 | 54/100 ✓ |
GAP factor (% slower than flat)
- Sunrise Marathon | Halfmarathon Brno
- 0.2% Favoured
Uphill share
Steep-up share
Downhill share
Total ascent (m)
Climbing density (m/km)
- Idaho Falls Marathon
- 1.6 m/km
Longest climb length (m)
- Idaho Falls Marathon
- 530 m
Longest climb gain (m)
Longest climb average grade
Total descent (m)
Net elevation (m)
Max absolute grade
- Idaho Falls Marathon
- 10.9%
Start elevation (m)
- Idaho Falls Marathon
- 1,416 m
Finish elevation (m)
- Idaho Falls Marathon
- 1,431 m
Scenic score
- Idaho Falls Marathon
- 83/100 Favoured
Conditions
- Idaho Falls Marathon
- 43/100
- Sunrise Marathon | Halfmarathon Brno
- 54/100 Favoured
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.
Race facts that change the decision
| Fact | Idaho Falls Marathon | Sunrise Marathon | Halfmarathon Brno |
|---|---|---|
| Schedule | Exact race date not confirmed. Event weekend starts 2026-07-25 (legacy event-level date). | Exact race date not confirmed. Event weekend starts 2026-06-21 (legacy event-level date). |
| Location | Idaho Falls, Idaho | Modřice (Brno), Czechia |
| Actual distance | 42.2 km | 42.2 km |
| raceindex.org mapped route held | Held | Held |
| raceindex.org elevation profile held | Held | Held |
| Course type | Loop | Laps |
| Surface | Unavailable | 95% firm/hardened surface — asphalt plus compacted gravel (mlat) and clay Based paths. |
| Elevation character | Gently Rolling | Pancake Flat |
| Terrain | Road | Road, Mixed, Trail |
| Scenery | Riverside, Waterfront, Countryside, City, Historic, Parkland | Riverside, Parkland, City, Countryside, Lakeside |
| Atmosphere | Community, Charity | Nighttime, Scenic Tour |
| Technicality | Non Technical | Non Technical |
| Total ascent | 69 m | 176 m |
| Climbing density | 1.6 m/km | 4.2 m/km |
| Total descent | 52 m | 176 m |
| Net elevation | 15 m | -0 m |
| Max absolute grade | 10.9% | 6.4% |
| Flat grade share | 96.4% | 88.9% |
| GAP factor | 0.3% | 0.2% |
| Cutoff | 6:00:00 | 6:00:00 |
| Entry model | Open | Open |
| Qualifying status | Boston_equivalent | Unavailable |
Schedule
- Idaho Falls Marathon
Exact race date not confirmed. Event weekend starts 2026-07-25 (legacy event-level date).
- Sunrise Marathon | Halfmarathon Brno
Exact race date not confirmed. Event weekend starts 2026-06-21 (legacy event-level date).
Location
- Idaho Falls Marathon
- Idaho Falls, Idaho
- Sunrise Marathon | Halfmarathon Brno
- Modřice (Brno), Czechia
Actual distance
- Idaho Falls Marathon
- 42.2 km
- Sunrise Marathon | Halfmarathon Brno
- 42.2 km
raceindex.org mapped route held
- Idaho Falls Marathon
- Held
- Sunrise Marathon | Halfmarathon Brno
- Held
raceindex.org elevation profile held
- Idaho Falls Marathon
- Held
- Sunrise Marathon | Halfmarathon Brno
- Held
Course type
- Idaho Falls Marathon
- Loop
- Sunrise Marathon | Halfmarathon Brno
- Laps
Surface
- Idaho Falls Marathon
- Unavailable
- Sunrise Marathon | Halfmarathon Brno
- 95% firm/hardened surface — asphalt plus compacted gravel (mlat) and clay Based paths.
Elevation character
- Idaho Falls Marathon
- Gently Rolling
- Sunrise Marathon | Halfmarathon Brno
- Pancake Flat
Terrain
- Idaho Falls Marathon
- Road
- Sunrise Marathon | Halfmarathon Brno
- Road, Mixed, Trail
Scenery
- Idaho Falls Marathon
- Riverside, Waterfront, Countryside, City, Historic, Parkland
- Sunrise Marathon | Halfmarathon Brno
- Riverside, Parkland, City, Countryside, Lakeside
Atmosphere
- Idaho Falls Marathon
- Community, Charity
- Sunrise Marathon | Halfmarathon Brno
- Nighttime, Scenic Tour
Technicality
- Idaho Falls Marathon
- Non Technical
- Sunrise Marathon | Halfmarathon Brno
- Non Technical
Total ascent
- Idaho Falls Marathon
- 69 m
- Sunrise Marathon | Halfmarathon Brno
- 176 m
Climbing density
- Idaho Falls Marathon
- 1.6 m/km
- Sunrise Marathon | Halfmarathon Brno
- 4.2 m/km
Total descent
- Idaho Falls Marathon
- 52 m
- Sunrise Marathon | Halfmarathon Brno
- 176 m
Net elevation
- Idaho Falls Marathon
- 15 m
- Sunrise Marathon | Halfmarathon Brno
- -0 m
Max absolute grade
- Idaho Falls Marathon
- 10.9%
- Sunrise Marathon | Halfmarathon Brno
- 6.4%
Flat grade share
- Idaho Falls Marathon
- 96.4%
- Sunrise Marathon | Halfmarathon Brno
- 88.9%
GAP factor
- Idaho Falls Marathon
- 0.3%
- Sunrise Marathon | Halfmarathon Brno
- 0.2%
Cutoff
- Idaho Falls Marathon
- 6:00:00
- Sunrise Marathon | Halfmarathon Brno
- 6:00:00
Entry model
- Idaho Falls Marathon
- Open
- Sunrise Marathon | Halfmarathon Brno
- Open
Qualifying status
- Idaho Falls Marathon
- Boston_equivalent
- Sunrise Marathon | Halfmarathon Brno
- 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, Idaho Falls Marathon or Sunrise Marathon | Halfmarathon Brno?
Sunrise Marathon | Halfmarathon Brno has the lower GAP factor, making it the flatter course on our route model and more favourable on gradient alone.