Flat grade share
- Endurancelife Suffolk (Dunwich) Half Marathon
- 77.7% Favoured
Endurancelife Suffolk (Dunwich) Half Marathon vs Norfolk Festival of Running (King's Lynn) Half Marathon
A data-led head-to-head using sourced race facts and available derived figures under one published methodology.
Data current as ofEndurancelife Suffolk (Dunwich) Half Marathon or Norfolk Festival of Running (King's Lynn) Half Marathon — which comes out ahead?
Endurancelife Suffolk (Dunwich) Half Marathon has the stronger available profile on flat grade share, course flatness and scenery score.
Route comparison snapshot
Endurancelife Suffolk (Dunwich) Half Marathon
- Mapped route
- Held
- Elevation profile
- Held
- course flatness
- 0.5% Favoured
- flat grade share
- 77.7% Favoured
- lower ascent
- 123 m
- climbing density
- 5.7 m/km
- net elevation
- 0 m
- maximum grade
- 11.0%
Norfolk Festival of Running (King's Lynn) Half Marathon
- Mapped route
- Held
- Elevation profile
- Held
- course flatness
- 1.5%
- flat grade share
- 45.5%
- lower ascent
- 278 m
- climbing density
- 13.2 m/km
- net elevation
- -1 m
- maximum grade
- 9.8%
| Metric | Endurancelife Suffolk (Dunwich) Half Marathon | Norfolk Festival of Running (King's Lynn) Half Marathon |
|---|---|---|
| Flat grade share | 77.7% ✓ | 45.5% |
| GAP factor (% slower than flat) | 0.5% ✓ | 1.5% |
| Uphill share | 11.6% | 27.2% |
| Steep-up share | 0.0% | 5.9% |
| Downhill share | 10.7% | 27.3% |
| Total ascent (m) | 123 m | 278 m |
| Climbing density (m/km) | 5.7 m/km | 13.2 m/km |
| Longest climb length (m) | 1,050 m | 140 m |
| Longest climb gain (m) | 17 m | 9 m |
| Longest climb average grade | 1.6% | 6.3% |
| Total descent (m) | 124 m | 279 m |
| Net elevation (m) | 0 m | -1 m |
| Max absolute grade | 11.0% | 9.8% |
| Start elevation (m) | 20 m | 18 m |
| Finish elevation (m) | 20 m | 17 m |
| Value | 81/100 | 83/100 ✓ |
| Scenic score | 100/100 ✓ | 65/100 |
| Conditions | 72/100 ✓ | 61/100 |
| Entry fee (GBP) | £47 | £36 ✓ |
| Lowest modelled true cost (GBP) | £177 | £166 ✓ |
GAP factor (% slower than flat)
- Endurancelife Suffolk (Dunwich) Half Marathon
- 0.5% Favoured
Uphill share
Steep-up share
Downhill share
Total ascent (m)
Climbing density (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)
Value
- Norfolk Festival of Running (King's Lynn) Half Marathon
- 83/100 Favoured
Scenic score
- Endurancelife Suffolk (Dunwich) Half Marathon
- 100/100 Favoured
Conditions
- Endurancelife Suffolk (Dunwich) Half Marathon
- 72/100 Favoured
Entry fee (GBP)
Lowest modelled true cost (GBP)
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 | Endurancelife Suffolk (Dunwich) Half Marathon | Norfolk Festival of Running (King's Lynn) Half Marathon |
|---|---|---|
| Schedule | Exact race date not confirmed. Event weekend starts 2026-10-10 (legacy event-level date). | Exact race date not confirmed. Event weekend starts 2026-07-12 (legacy event-level date). |
| Location | Dunwich, East Of England | King's Lynn, East Of England |
| Actual distance | 21.7 km | 21.1 km |
| raceindex.org mapped route held | Held | Held |
| raceindex.org elevation profile held | Held | Held |
| Course type | Loop | Laps |
| Surface | Forest, moorland, grass and beach terrain, rated moderate in difficulty. | Trail course over sand, gravel and grass |
| Terrain | Trail | Trail |
| Scenery | Coastal, Parkland, Historic, Forest, Moorland, Countryside | Parkland, Countryside, Lakeside, Forest |
| Atmosphere | Community, Scenic Tour | Festival, Community |
| Total ascent | 123 m | 278 m |
| Climbing density | 5.7 m/km | 13.2 m/km |
| Total descent | 124 m | 279 m |
| Net elevation | 0 m | -1 m |
| Max absolute grade | 11.0% | 9.8% |
| Flat grade share | 77.7% | 45.5% |
| GAP factor | 0.5% | 1.5% |
| Cutoff | Unavailable | 6:00:00 |
| Entry model | Open | Open |
| Entry fee | £47 | £36 |
| Lowest modelled true cost | £177 | £166 |
| Cost model origin | National Average | National Average |
| Measured course | No | Unavailable |
Schedule
- Endurancelife Suffolk (Dunwich) Half Marathon
Exact race date not confirmed. Event weekend starts 2026-10-10 (legacy event-level date).
- Norfolk Festival of Running (King's Lynn) Half Marathon
Exact race date not confirmed. Event weekend starts 2026-07-12 (legacy event-level date).
Location
- Endurancelife Suffolk (Dunwich) Half Marathon
- Dunwich, East Of England
- Norfolk Festival of Running (King's Lynn) Half Marathon
- King's Lynn, East Of England
Actual distance
- Endurancelife Suffolk (Dunwich) Half Marathon
- 21.7 km
- Norfolk Festival of Running (King's Lynn) Half Marathon
- 21.1 km
raceindex.org mapped route held
- Endurancelife Suffolk (Dunwich) Half Marathon
- Held
- Norfolk Festival of Running (King's Lynn) Half Marathon
- Held
raceindex.org elevation profile held
- Endurancelife Suffolk (Dunwich) Half Marathon
- Held
- Norfolk Festival of Running (King's Lynn) Half Marathon
- Held
Course type
- Endurancelife Suffolk (Dunwich) Half Marathon
- Loop
- Norfolk Festival of Running (King's Lynn) Half Marathon
- Laps
Surface
- Endurancelife Suffolk (Dunwich) Half Marathon
- Forest, moorland, grass and beach terrain, rated moderate in difficulty.
- Norfolk Festival of Running (King's Lynn) Half Marathon
- Trail course over sand, gravel and grass
Terrain
- Endurancelife Suffolk (Dunwich) Half Marathon
- Trail
- Norfolk Festival of Running (King's Lynn) Half Marathon
- Trail
Scenery
- Endurancelife Suffolk (Dunwich) Half Marathon
- Coastal, Parkland, Historic, Forest, Moorland, Countryside
- Norfolk Festival of Running (King's Lynn) Half Marathon
- Parkland, Countryside, Lakeside, Forest
Atmosphere
- Endurancelife Suffolk (Dunwich) Half Marathon
- Community, Scenic Tour
- Norfolk Festival of Running (King's Lynn) Half Marathon
- Festival, Community
Total ascent
- Endurancelife Suffolk (Dunwich) Half Marathon
- 123 m
- Norfolk Festival of Running (King's Lynn) Half Marathon
- 278 m
Climbing density
- Endurancelife Suffolk (Dunwich) Half Marathon
- 5.7 m/km
- Norfolk Festival of Running (King's Lynn) Half Marathon
- 13.2 m/km
Total descent
- Endurancelife Suffolk (Dunwich) Half Marathon
- 124 m
- Norfolk Festival of Running (King's Lynn) Half Marathon
- 279 m
Net elevation
- Endurancelife Suffolk (Dunwich) Half Marathon
- 0 m
- Norfolk Festival of Running (King's Lynn) Half Marathon
- -1 m
Max absolute grade
- Endurancelife Suffolk (Dunwich) Half Marathon
- 11.0%
- Norfolk Festival of Running (King's Lynn) Half Marathon
- 9.8%
Flat grade share
- Endurancelife Suffolk (Dunwich) Half Marathon
- 77.7%
- Norfolk Festival of Running (King's Lynn) Half Marathon
- 45.5%
GAP factor
- Endurancelife Suffolk (Dunwich) Half Marathon
- 0.5%
- Norfolk Festival of Running (King's Lynn) Half Marathon
- 1.5%
Cutoff
- Endurancelife Suffolk (Dunwich) Half Marathon
- Unavailable
- Norfolk Festival of Running (King's Lynn) Half Marathon
- 6:00:00
Entry model
- Endurancelife Suffolk (Dunwich) Half Marathon
- Open
- Norfolk Festival of Running (King's Lynn) Half Marathon
- Open
Entry fee
- Endurancelife Suffolk (Dunwich) Half Marathon
- £47
- Norfolk Festival of Running (King's Lynn) Half Marathon
- £36
Lowest modelled true cost
- Endurancelife Suffolk (Dunwich) Half Marathon
- £177
- Norfolk Festival of Running (King's Lynn) Half Marathon
- £166
Cost model origin
- Endurancelife Suffolk (Dunwich) Half Marathon
- National Average
- Norfolk Festival of Running (King's Lynn) Half Marathon
- National Average
Measured course
- Endurancelife Suffolk (Dunwich) Half Marathon
- No
- Norfolk Festival of Running (King's Lynn) Half 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, Endurancelife Suffolk (Dunwich) Half Marathon or Norfolk Festival of Running (King's Lynn) Half Marathon?
Endurancelife Suffolk (Dunwich) Half Marathon has the lower GAP factor, making it the flatter course on our route model and more favourable on gradient alone.