Flat grade share
- Chester Marathon 10K
- 79.5%
- Wilmslow Half Marathon 10K
- 91.1% Favoured
Chester Marathon 10K vs Wilmslow Half Marathon 10K
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 Wilmslow Half Marathon 10K — which comes out ahead?
Chester Marathon 10K and Wilmslow Half Marathon 10K split the available advantages, so the better choice depends on which metric matters most to the runner.
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%
Wilmslow Half Marathon 10K
- Mapped route
- Held
- Elevation profile
- Held
- course flatness
- 0.0% Favoured
- flat grade share
- 91.1% Favoured
- lower ascent
- 40 m
- climbing density
- 4.0 m/km
- net elevation
- -3 m
- maximum grade
- 3.4%
| Metric | Chester Marathon 10K | Wilmslow Half Marathon 10K |
|---|---|---|
| Flat grade share | 79.5% | 91.1% ✓ |
| GAP factor (% slower than flat) | 0.9% | 0.0% ✓ |
| Uphill share | 11.8% | 4.7% |
| Steep-up share | 0.0% | 0.0% |
| Downhill share | 8.7% | 4.2% |
| Total ascent (m) | 60 m | 40 m |
| Climbing density (m/km) | 6.0 m/km | 4.0 m/km |
| Longest climb length (m) | 840 m | 710 m |
| Longest climb gain (m) | 15 m | 7 m |
| Longest climb average grade | 1.8% | 1.0% |
| Total descent (m) | 50 m | 43 m |
| Net elevation (m) | 11 m | -3 m |
| Max absolute grade | 6.2% | 3.4% |
| Start elevation (m) | 14 m | 80 m |
| Finish elevation (m) | 25 m | 77 m |
| Scenic score | 48/100 ✓ | 13/100 |
| Conditions | 83/100 ✓ | 81/100 |
GAP factor (% slower than flat)
- Wilmslow Half Marathon 10K
- 0.0% Favoured
Uphill share
- Chester Marathon 10K
- 11.8%
Steep-up share
Downhill share
Total ascent (m)
Climbing density (m/km)
- Chester Marathon 10K
- 6.0 m/km
- Wilmslow Half Marathon 10K
- 4.0 m/km
Longest climb length (m)
- Chester Marathon 10K
- 840 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
- Chester Marathon 10K
- 48/100 Favoured
Conditions
- Chester Marathon 10K
- 83/100 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 | Chester Marathon 10K | Wilmslow Half Marathon 10K |
|---|---|---|
| Schedule | Exact race date not confirmed. Event weekend starts 2026-10-11 (legacy event-level date). | Exact race date not confirmed. Event weekend starts 2027-03-21 (legacy event-level date). |
| Location | Chester, North West | Wilmslow, North West |
| Actual distance | 10 km | 10 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 |
| Terrain | Unavailable | Road |
| Scenery | Riverside, City, Historic, Countryside | Countryside |
| Atmosphere | Scenic Tour, Community | Community, Competitive, Charity |
| Total ascent | 60 m | 40 m |
| Climbing density | 6.0 m/km | 4.0 m/km |
| Total descent | 50 m | 43 m |
| Net elevation | 11 m | -3 m |
| Max absolute grade | 6.2% | 3.4% |
| Flat grade share | 79.5% | 91.1% |
| GAP factor | 0.9% | 0.0% |
| Cutoff | Unavailable | 1:45:00 |
| Entry model | Open | Open |
| Measured course | Unavailable | Yes |
Schedule
- Chester Marathon 10K
Exact race date not confirmed. Event weekend starts 2026-10-11 (legacy event-level date).
- Wilmslow Half Marathon 10K
Exact race date not confirmed. Event weekend starts 2027-03-21 (legacy event-level date).
Location
- Chester Marathon 10K
- Chester, North West
- Wilmslow Half Marathon 10K
- Wilmslow, North West
Actual distance
- Chester Marathon 10K
- 10 km
- Wilmslow Half Marathon 10K
- 10 km
raceindex.org mapped route held
- Chester Marathon 10K
- Held
- Wilmslow Half Marathon 10K
- Held
raceindex.org elevation profile held
- Chester Marathon 10K
- Held
- Wilmslow Half Marathon 10K
- Held
Course type
- Chester Marathon 10K
- Fast, flat, scenic city centre route
- Wilmslow Half Marathon 10K
- Unavailable
Surface
- Chester Marathon 10K
- Unavailable
- Wilmslow Half Marathon 10K
- Road
Terrain
- Chester Marathon 10K
- Unavailable
- Wilmslow Half Marathon 10K
- Road
Scenery
- Chester Marathon 10K
- Riverside, City, Historic, Countryside
- Wilmslow Half Marathon 10K
- Countryside
Atmosphere
- Chester Marathon 10K
- Scenic Tour, Community
- Wilmslow Half Marathon 10K
- Community, Competitive, Charity
Total ascent
- Chester Marathon 10K
- 60 m
- Wilmslow Half Marathon 10K
- 40 m
Climbing density
- Chester Marathon 10K
- 6.0 m/km
- Wilmslow Half Marathon 10K
- 4.0 m/km
Total descent
- Chester Marathon 10K
- 50 m
- Wilmslow Half Marathon 10K
- 43 m
Net elevation
- Chester Marathon 10K
- 11 m
- Wilmslow Half Marathon 10K
- -3 m
Max absolute grade
- Chester Marathon 10K
- 6.2%
- Wilmslow Half Marathon 10K
- 3.4%
Flat grade share
- Chester Marathon 10K
- 79.5%
- Wilmslow Half Marathon 10K
- 91.1%
GAP factor
- Chester Marathon 10K
- 0.9%
- Wilmslow Half Marathon 10K
- 0.0%
Cutoff
- Chester Marathon 10K
- Unavailable
- Wilmslow Half Marathon 10K
- 1:45:00
Entry model
- Chester Marathon 10K
- Open
- Wilmslow Half Marathon 10K
- Open
Measured course
- Chester Marathon 10K
- Unavailable
- Wilmslow Half Marathon 10K
- Yes
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 Wilmslow Half Marathon 10K?
Wilmslow Half Marathon 10K has the lower GAP factor, making it the flatter course on our route model and more favourable on gradient alone.