Flat grade share
- Cedar Rapids Marathon 10K
- 69.8% Favoured
Cedar Rapids Marathon 10K vs Cedar Rapids Marathon Half Marathon
A data-led head-to-head using sourced race facts and available derived figures under one published methodology.
Data current as ofCedar Rapids Marathon 10K or Cedar Rapids Marathon Half Marathon — which comes out ahead?
Cedar Rapids Marathon 10K has the stronger available profile on flat grade share and course flatness.
Route comparison snapshot
Cedar Rapids Marathon 10K
- Mapped route
- Held
- Elevation profile
- Held
- course flatness
- 1.1% Favoured
- flat grade share
- 69.8% Favoured
- lower ascent
- 85 m
- climbing density
- 8.5 m/km
- net elevation
- -0 m
- maximum grade
- 13.8%
Cedar Rapids Marathon Half Marathon
- Mapped route
- Held
- Elevation profile
- Held
- course flatness
- 1.4%
- flat grade share
- 62.0%
- lower ascent
- 229 m
- climbing density
- 10.9 m/km
- net elevation
- -2 m
- maximum grade
- 13.9%
| Metric | Cedar Rapids Marathon 10K | Cedar Rapids Marathon Half Marathon |
|---|---|---|
| Flat grade share | 69.8% ✓ | 62.0% |
| GAP factor (% slower than flat) | 1.1% ✓ | 1.4% |
| Uphill share | 13.9% | 17.7% |
| Steep-up share | 3.9% | 5.6% |
| Downhill share | 16.4% | 20.2% |
| Total ascent (m) | 85 m | 229 m |
| Climbing density (m/km) | 8.5 m/km | 10.9 m/km |
| Longest climb length (m) | 370 m | 440 m |
| Longest climb gain (m) | 19 m | 37 m |
| Longest climb average grade | 5.0% | 8.4% |
| Total descent (m) | 86 m | 232 m |
| Net elevation (m) | -0 m | -2 m |
| Max absolute grade | 13.8% | 13.9% |
| Start elevation (m) | 215 m | 217 m |
| Finish elevation (m) | 215 m | 215 m |
| Scenic score | 57/100 | 57/100 |
| Conditions | 75/100 | 75/100 |
GAP factor (% slower than flat)
- Cedar Rapids Marathon 10K
- 1.1% Favoured
Uphill share
Steep-up share
Downhill share
Total ascent (m)
Climbing density (m/km)
- Cedar Rapids Marathon 10K
- 8.5 m/km
- Cedar Rapids Marathon Half Marathon
- 10.9 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 | Cedar Rapids Marathon 10K | Cedar Rapids Marathon Half Marathon |
|---|---|---|
| Schedule | Exact race date not confirmed. Event weekend starts 2027-04-25 (legacy event-level date). | Exact race date not confirmed. Event weekend starts 2027-04-25 (legacy event-level date). |
| Location | Cedar Rapids, Iowa | Cedar Rapids, Iowa |
| Actual distance | 10 km | 21.1 km |
| raceindex.org mapped route held | Held | Held |
| raceindex.org elevation profile held | Held | Held |
| Scenery | City, Waterfront, Riverside, Historic, Parkland | City, Waterfront, Riverside, Historic, Parkland |
| Atmosphere | Community, Festival | Community, Festival |
| Total ascent | 85 m | 229 m |
| Climbing density | 8.5 m/km | 10.9 m/km |
| Total descent | 86 m | 232 m |
| Net elevation | -0 m | -2 m |
| Max absolute grade | 13.8% | 13.9% |
| Flat grade share | 69.8% | 62.0% |
| GAP factor | 1.1% | 1.4% |
| Cutoff | 2:00:00 | 4:00:00 |
| Entry model | Open | Open |
Schedule
- Cedar Rapids Marathon 10K
Exact race date not confirmed. Event weekend starts 2027-04-25 (legacy event-level date).
- Cedar Rapids Marathon Half Marathon
Exact race date not confirmed. Event weekend starts 2027-04-25 (legacy event-level date).
Location
- Cedar Rapids Marathon 10K
- Cedar Rapids, Iowa
- Cedar Rapids Marathon Half Marathon
- Cedar Rapids, Iowa
Actual distance
- Cedar Rapids Marathon 10K
- 10 km
- Cedar Rapids Marathon Half Marathon
- 21.1 km
raceindex.org mapped route held
- Cedar Rapids Marathon 10K
- Held
- Cedar Rapids Marathon Half Marathon
- Held
raceindex.org elevation profile held
- Cedar Rapids Marathon 10K
- Held
- Cedar Rapids Marathon Half Marathon
- Held
Scenery
- Cedar Rapids Marathon 10K
- City, Waterfront, Riverside, Historic, Parkland
- Cedar Rapids Marathon Half Marathon
- City, Waterfront, Riverside, Historic, Parkland
Atmosphere
- Cedar Rapids Marathon 10K
- Community, Festival
- Cedar Rapids Marathon Half Marathon
- Community, Festival
Total ascent
- Cedar Rapids Marathon 10K
- 85 m
- Cedar Rapids Marathon Half Marathon
- 229 m
Climbing density
- Cedar Rapids Marathon 10K
- 8.5 m/km
- Cedar Rapids Marathon Half Marathon
- 10.9 m/km
Total descent
- Cedar Rapids Marathon 10K
- 86 m
- Cedar Rapids Marathon Half Marathon
- 232 m
Net elevation
- Cedar Rapids Marathon 10K
- -0 m
- Cedar Rapids Marathon Half Marathon
- -2 m
Max absolute grade
- Cedar Rapids Marathon 10K
- 13.8%
- Cedar Rapids Marathon Half Marathon
- 13.9%
Flat grade share
- Cedar Rapids Marathon 10K
- 69.8%
- Cedar Rapids Marathon Half Marathon
- 62.0%
GAP factor
- Cedar Rapids Marathon 10K
- 1.1%
- Cedar Rapids Marathon Half Marathon
- 1.4%
Cutoff
- Cedar Rapids Marathon 10K
- 2:00:00
- Cedar Rapids Marathon Half Marathon
- 4:00:00
Entry model
- Cedar Rapids Marathon 10K
- Open
- Cedar Rapids Marathon Half Marathon
- 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, Cedar Rapids Marathon 10K or Cedar Rapids Marathon Half Marathon?
Cedar Rapids Marathon 10K has the lower GAP factor, making it the flatter course on our route model and more favourable on gradient alone.