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