Flat grade share
- Chester Marathon 10K
- 79.5%
- Chester Marathon
- 86.3% Favoured
Chester Marathon 10K vs Chester Marathon
A data-led head-to-head using sourced race facts and available derived figures under one published methodology.
Data current as ofChester Marathon 10K or Chester Marathon — which comes out ahead?
Chester Marathon has the stronger available profile on flat grade share and course flatness.
Route comparison snapshot
Chester Marathon 10K
- Mapped route
- Held
- Elevation profile
- Held
- course flatness
- 0.9%
- flat grade share
- 79.5%
- lower ascent
- 60 m
- climbing density
- 6.0 m/km
- net elevation
- 11 m
- maximum grade
- 6.2%
Chester Marathon
- Mapped route
- Held
- Elevation profile
- Held
- course flatness
- 0.3% Favoured
- flat grade share
- 86.3% Favoured
- lower ascent
- 220 m
- climbing density
- 5.2 m/km
- net elevation
- 3 m
- maximum grade
- 7.8%
| Metric | Chester Marathon 10K | Chester Marathon |
|---|---|---|
| Flat grade share | 79.5% | 86.3% ✓ |
| GAP factor (% slower than flat) | 0.9% | 0.3% ✓ |
| Uphill share | 11.8% | 6.7% |
| Steep-up share | 0.0% | 0.3% |
| Downhill share | 8.7% | 7.0% |
| Total ascent (m) | 60 m | 220 m |
| Climbing density (m/km) | 6.0 m/km | 5.2 m/km |
| Longest climb length (m) | 840 m | 680 m |
| Longest climb gain (m) | 15 m | 25 m |
| Longest climb average grade | 1.8% | 3.6% |
| Total descent (m) | 50 m | 217 m |
| Net elevation (m) | 11 m | 3 m |
| Max absolute grade | 6.2% | 7.8% |
| Start elevation (m) | 14 m | 5 m |
| Finish elevation (m) | 25 m | 8 m |
| Scenic score | 48/100 | 48/100 |
| Conditions | 83/100 | 83/100 |
GAP factor (% slower than flat)
- Chester Marathon
- 0.3% Favoured
Uphill share
- Chester Marathon 10K
- 11.8%
- Chester Marathon
- 6.7%
Steep-up share
- Chester Marathon
- 0.3%
Downhill share
- Chester Marathon
- 7.0%
Total ascent (m)
- Chester Marathon
- 220 m
Climbing density (m/km)
- Chester Marathon 10K
- 6.0 m/km
- Chester Marathon
- 5.2 m/km
Longest climb length (m)
- Chester Marathon 10K
- 840 m
- Chester Marathon
- 680 m
Longest climb gain (m)
- Chester Marathon
- 25 m
Longest climb average grade
- Chester Marathon
- 3.6%
Total descent (m)
- Chester Marathon
- 217 m
Net elevation (m)
Max absolute grade
- Chester Marathon
- 7.8%
Start elevation (m)
Finish elevation (m)
Scenic score
- Chester Marathon 10K
- 48/100
- Chester Marathon
- 48/100
Conditions
- Chester Marathon 10K
- 83/100
- Chester Marathon
- 83/100
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 | Chester Marathon 10K | Chester Marathon |
|---|---|---|
| Schedule | Exact race date not confirmed. Event weekend starts 2026-10-11 (legacy event-level date). | Exact race date not confirmed. Event weekend starts 2026-10-11 (legacy event-level date). |
| Location | Chester, North West | Chester, North West |
| Actual distance | 10 km | 42.2 km |
| raceindex.org mapped route held | Held | Held |
| raceindex.org elevation profile held | Held | Held |
| Course type | Fast, flat, scenic city centre route | Unavailable |
| Surface | Unavailable | Road |
| Elevation character | Unavailable | Gently Rolling |
| Terrain | Unavailable | Road |
| Scenery | Riverside, City, Historic, Countryside | Riverside, Historic, City, Countryside |
| Atmosphere | Scenic Tour, Community | Scenic Tour, Community |
| Technicality | Unavailable | Non Technical |
| Total ascent | 60 m | 220 m |
| Climbing density | 6.0 m/km | 5.2 m/km |
| Total descent | 50 m | 217 m |
| Net elevation | 11 m | 3 m |
| Max absolute grade | 6.2% | 7.8% |
| Flat grade share | 79.5% | 86.3% |
| GAP factor | 0.9% | 0.3% |
| Cutoff | Unavailable | 6:00:00 |
| Entry model | Open | Open |
| Measured course | Unavailable | Yes |
| Qualifying status | Unavailable | Championship |
Schedule
- Chester Marathon 10K
Exact race date not confirmed. Event weekend starts 2026-10-11 (legacy event-level date).
- Chester Marathon
Exact race date not confirmed. Event weekend starts 2026-10-11 (legacy event-level date).
Location
- Chester Marathon 10K
- Chester, North West
- Chester Marathon
- Chester, North West
Actual distance
- Chester Marathon 10K
- 10 km
- Chester Marathon
- 42.2 km
raceindex.org mapped route held
- Chester Marathon 10K
- Held
- Chester Marathon
- Held
raceindex.org elevation profile held
- Chester Marathon 10K
- Held
- Chester Marathon
- Held
Course type
- Chester Marathon 10K
- Fast, flat, scenic city centre route
- Chester Marathon
- Unavailable
Surface
- Chester Marathon 10K
- Unavailable
- Chester Marathon
- Road
Elevation character
- Chester Marathon 10K
- Unavailable
- Chester Marathon
- Gently Rolling
Terrain
- Chester Marathon 10K
- Unavailable
- Chester Marathon
- Road
Scenery
- Chester Marathon 10K
- Riverside, City, Historic, Countryside
- Chester Marathon
- Riverside, Historic, City, Countryside
Atmosphere
- Chester Marathon 10K
- Scenic Tour, Community
- Chester Marathon
- Scenic Tour, Community
Technicality
- Chester Marathon 10K
- Unavailable
- Chester Marathon
- Non Technical
Total ascent
- Chester Marathon 10K
- 60 m
- Chester Marathon
- 220 m
Climbing density
- Chester Marathon 10K
- 6.0 m/km
- Chester Marathon
- 5.2 m/km
Total descent
- Chester Marathon 10K
- 50 m
- Chester Marathon
- 217 m
Net elevation
- Chester Marathon 10K
- 11 m
- Chester Marathon
- 3 m
Max absolute grade
- Chester Marathon 10K
- 6.2%
- Chester Marathon
- 7.8%
Flat grade share
- Chester Marathon 10K
- 79.5%
- Chester Marathon
- 86.3%
GAP factor
- Chester Marathon 10K
- 0.9%
- Chester Marathon
- 0.3%
Cutoff
- Chester Marathon 10K
- Unavailable
- Chester Marathon
- 6:00:00
Entry model
- Chester Marathon 10K
- Open
- Chester Marathon
- Open
Measured course
- Chester Marathon 10K
- Unavailable
- Chester Marathon
- Yes
Qualifying status
- Chester Marathon 10K
- Unavailable
- Chester Marathon
- Championship
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, Chester Marathon 10K or Chester Marathon?
Chester Marathon has the lower GAP factor, making it the flatter course on our route model and more favourable on gradient alone.