Flat grade share
- Garmin New Forest Marathon
- 81.7% Favoured
Milton Keynes Marathon vs Garmin New Forest Marathon
A data-led head-to-head using sourced race facts and available derived figures under one published methodology.
Data current as ofMilton Keynes Marathon or Garmin New Forest Marathon — which comes out ahead?
Garmin New Forest Marathon has the stronger available profile on flat grade share, course flatness and scenery score.
Route comparison snapshot
Milton Keynes Marathon
- Mapped route
- Held
- Elevation profile
- Held
- course flatness
- 0.6%
- flat grade share
- 70.5%
- lower ascent
- 318 m
- climbing density
- 7.5 m/km
- net elevation
- -2 m
- maximum grade
- 7.8%
Garmin New Forest Marathon
- Mapped route
- Held
- Elevation profile
- Held
- course flatness
- 0.3% Favoured
- flat grade share
- 81.7% Favoured
- lower ascent
- 246 m
- climbing density
- 5.8 m/km
- net elevation
- -1 m
- maximum grade
- 5.5%
| Metric | Milton Keynes Marathon | Garmin New Forest Marathon |
|---|---|---|
| Flat grade share | 70.5% | 81.7% ✓ |
| GAP factor (% slower than flat) | 0.6% | 0.3% ✓ |
| Uphill share | 15.5% | 9.2% |
| Steep-up share | 0.4% | 0.0% |
| Downhill share | 14.0% | 9.1% |
| Total ascent (m) | 318 m | 246 m |
| Climbing density (m/km) | 7.5 m/km | 5.8 m/km |
| Longest climb length (m) | 940 m | 1,270 m |
| Longest climb gain (m) | 18 m | 27 m |
| Longest climb average grade | 1.9% | 2.1% |
| Total descent (m) | 320 m | 247 m |
| Net elevation (m) | -2 m | -1 m |
| Max absolute grade | 7.8% | 5.5% |
| Start elevation (m) | 78 m | 22 m |
| Finish elevation (m) | 76 m | 21 m |
| Value | Unavailable | 77/100 |
| Scenic score | 85/100 | 100/100 ✓ |
| Conditions | 86/100 ✓ | 67/100 |
| Entry fee (GBP) | Unavailable | £69 |
| Lowest modelled true cost (GBP) | Unavailable | £199 |
GAP factor (% slower than flat)
- Garmin New Forest Marathon
- 0.3% Favoured
Uphill share
Steep-up share
Downhill share
Total ascent (m)
Climbing density (m/km)
- Milton Keynes Marathon
- 7.5 m/km
- Garmin New Forest Marathon
- 5.8 m/km
Longest climb length (m)
- Garmin New Forest Marathon
- 1,270 m
Longest climb gain (m)
Longest climb average grade
Total descent (m)
Net elevation (m)
Max absolute grade
Start elevation (m)
Finish elevation (m)
Value
- Milton Keynes Marathon
- Unavailable
Scenic score
- Milton Keynes Marathon
- 85/100
- Garmin New Forest Marathon
- 100/100 Favoured
Conditions
- Milton Keynes Marathon
- 86/100 Favoured
Entry fee (GBP)
- Milton Keynes Marathon
- Unavailable
Lowest modelled true cost (GBP)
- Milton Keynes Marathon
- Unavailable
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 | Milton Keynes Marathon | Garmin New Forest Marathon |
|---|---|---|
| Schedule | Exact race date not confirmed. Event weekend starts 2026-05-03 (legacy event-level date). | Exact race date not confirmed. Event weekend starts 2026-09-13 (legacy event-level date). |
| Location | Milton Keynes, Buckinghamshire, South East | Brockenhurst, South East |
| Actual distance | 42.2 km | 42.2 km |
| raceindex.org mapped route held | Held | Held |
| raceindex.org elevation profile held | Held | Held |
| Course type | Road | Unavailable |
| Surface | Unavailable | Multi Terrain: compact gravel forest tracks, trail sections and tarmac roads. |
| Laps | 2 | Unavailable |
| Elevation character | Gently Rolling | Flat |
| Terrain | Road, Towpath | Mixed, Gravel |
| Scenery | Lakeside, Parkland, Riverside, City, Forest, Countryside | Coastal, Forest, Historic, Countryside, Moorland, Parkland |
| Atmosphere | Community, Destination | Scenic Tour, Festival |
| Technicality | Non Technical | Moderate |
| Total ascent | 318 m | 246 m |
| Climbing density | 7.5 m/km | 5.8 m/km |
| Total descent | 320 m | 247 m |
| Net elevation | -2 m | -1 m |
| Max absolute grade | 7.8% | 5.5% |
| Flat grade share | 70.5% | 81.7% |
| GAP factor | 0.6% | 0.3% |
| Cutoff | 6:30:00 | Unavailable |
| Entry model | Open | Open |
| Entry fee | Unavailable | £69 |
| Lowest modelled true cost | Unavailable | £199 |
| Cost model origin | Unavailable | National Average |
| Measured course | Yes | Unavailable |
| Qualifying status | Boston_equivalent | Unavailable |
Schedule
- Milton Keynes Marathon
Exact race date not confirmed. Event weekend starts 2026-05-03 (legacy event-level date).
- Garmin New Forest Marathon
Exact race date not confirmed. Event weekend starts 2026-09-13 (legacy event-level date).
Location
- Milton Keynes Marathon
- Milton Keynes, Buckinghamshire, South East
- Garmin New Forest Marathon
- Brockenhurst, South East
Actual distance
- Milton Keynes Marathon
- 42.2 km
- Garmin New Forest Marathon
- 42.2 km
raceindex.org mapped route held
- Milton Keynes Marathon
- Held
- Garmin New Forest Marathon
- Held
raceindex.org elevation profile held
- Milton Keynes Marathon
- Held
- Garmin New Forest Marathon
- Held
Course type
- Milton Keynes Marathon
- Road
- Garmin New Forest Marathon
- Unavailable
Surface
- Milton Keynes Marathon
- Unavailable
- Garmin New Forest Marathon
- Multi Terrain: compact gravel forest tracks, trail sections and tarmac roads.
Laps
- Milton Keynes Marathon
- 2
- Garmin New Forest Marathon
- Unavailable
Elevation character
- Milton Keynes Marathon
- Gently Rolling
- Garmin New Forest Marathon
- Flat
Terrain
- Milton Keynes Marathon
- Road, Towpath
- Garmin New Forest Marathon
- Mixed, Gravel
Scenery
- Milton Keynes Marathon
- Lakeside, Parkland, Riverside, City, Forest, Countryside
- Garmin New Forest Marathon
- Coastal, Forest, Historic, Countryside, Moorland, Parkland
Atmosphere
- Milton Keynes Marathon
- Community, Destination
- Garmin New Forest Marathon
- Scenic Tour, Festival
Technicality
- Milton Keynes Marathon
- Non Technical
- Garmin New Forest Marathon
- Moderate
Total ascent
- Milton Keynes Marathon
- 318 m
- Garmin New Forest Marathon
- 246 m
Climbing density
- Milton Keynes Marathon
- 7.5 m/km
- Garmin New Forest Marathon
- 5.8 m/km
Total descent
- Milton Keynes Marathon
- 320 m
- Garmin New Forest Marathon
- 247 m
Net elevation
- Milton Keynes Marathon
- -2 m
- Garmin New Forest Marathon
- -1 m
Max absolute grade
- Milton Keynes Marathon
- 7.8%
- Garmin New Forest Marathon
- 5.5%
Flat grade share
- Milton Keynes Marathon
- 70.5%
- Garmin New Forest Marathon
- 81.7%
GAP factor
- Milton Keynes Marathon
- 0.6%
- Garmin New Forest Marathon
- 0.3%
Cutoff
- Milton Keynes Marathon
- 6:30:00
- Garmin New Forest Marathon
- Unavailable
Entry model
- Milton Keynes Marathon
- Open
- Garmin New Forest Marathon
- Open
Entry fee
- Milton Keynes Marathon
- Unavailable
- Garmin New Forest Marathon
- £69
Lowest modelled true cost
- Milton Keynes Marathon
- Unavailable
- Garmin New Forest Marathon
- £199
Cost model origin
- Milton Keynes Marathon
- Unavailable
- Garmin New Forest Marathon
- National Average
Measured course
- Milton Keynes Marathon
- Yes
- Garmin New Forest Marathon
- Unavailable
Qualifying status
- Milton Keynes Marathon
- Boston_equivalent
- Garmin New Forest Marathon
- 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, Milton Keynes Marathon or Garmin New Forest Marathon?
Garmin New Forest Marathon has the lower GAP factor, making it the flatter course on our route model and more favourable on gradient alone.