Flat grade share
- Endurancelife Pembrokeshire Half Marathon
- 25.5% Favoured
Endurancelife Pembrokeshire Half Marathon vs Endurancelife Pembrokeshire 12K
A data-led head-to-head using sourced race facts and available derived figures under one published methodology.
Data current as ofEndurancelife Pembrokeshire Half Marathon or Endurancelife Pembrokeshire 12K — which comes out ahead?
Endurancelife Pembrokeshire Half Marathon has the stronger available profile on flat grade share and course flatness.
Route comparison snapshot
Endurancelife Pembrokeshire Half Marathon
- Mapped route
- Held
- Elevation profile
- Held
- course flatness
- 6.0% Favoured
- flat grade share
- 25.5% Favoured
- lower ascent
- 570 m
- climbing density
- 26.4 m/km
- net elevation
- -11 m
- maximum grade
- 28.9%
Endurancelife Pembrokeshire 12K
- Mapped route
- Held
- Elevation profile
- Held
- course flatness
- 7.7%
- flat grade share
- 22.6%
- lower ascent
- 353 m
- climbing density
- 29.2 m/km
- net elevation
- 10 m
- maximum grade
- 28.9%
| Metric | Endurancelife Pembrokeshire Half Marathon | Endurancelife Pembrokeshire 12K |
|---|---|---|
| Flat grade share | 25.5% ✓ | 22.6% |
| GAP factor (% slower than flat) | 6.0% ✓ | 7.7% |
| Uphill share | 36.0% | 37.6% |
| Steep-up share | 17.8% | 19.5% |
| Downhill share | 38.6% | 39.8% |
| Total ascent (m) | 570 m | 353 m |
| Climbing density (m/km) | 26.4 m/km | 29.2 m/km |
| Longest climb length (m) | 280 m | 280 m |
| Longest climb gain (m) | 29 m | 29 m |
| Longest climb average grade | 10.3% | 10.3% |
| Total descent (m) | 581 m | 343 m |
| Net elevation (m) | -11 m | 10 m |
| Max absolute grade | 28.9% | 28.9% |
| Start elevation (m) | 45 m | 24 m |
| Finish elevation (m) | 35 m | 34 m |
| Scenic score | 100/100 | 100/100 |
| Conditions | 84/100 | 84/100 |
GAP factor (% slower than flat)
- Endurancelife Pembrokeshire Half Marathon
- 6.0% Favoured
Uphill share
Steep-up share
Downhill share
Total ascent (m)
Climbing density (m/km)
- Endurancelife Pembrokeshire 12K
- 29.2 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 | Endurancelife Pembrokeshire Half Marathon | Endurancelife Pembrokeshire 12K |
|---|---|---|
| Schedule | Exact race date not confirmed. Event weekend starts 2026-04-25 (legacy event-level date). | Exact race date not confirmed. Event weekend starts 2026-04-25 (legacy event-level date). |
| Location | Little Haven, Wales | Little Haven, Wales |
| Actual distance | 21.6 km | 12.1 km |
| raceindex.org mapped route held | Held | Held |
| raceindex.org elevation profile held | Held | Held |
| Surface | Grass, trail, beach and coast path | Grass, trail, beach and coast path |
| Terrain | Trail, Beach, Road | Trail, Beach, Road |
| Scenery | Coastal, Parkland, Desert, Island, Countryside | Coastal, Parkland, Desert, Island, Countryside |
| Atmosphere | Wilderness, Scenic Tour, Community | Wilderness, Scenic Tour, Community |
| Total ascent | 570 m | 353 m |
| Climbing density | 26.4 m/km | 29.2 m/km |
| Total descent | 581 m | 343 m |
| Net elevation | -11 m | 10 m |
| Max absolute grade | 28.9% | 28.9% |
| Flat grade share | 25.5% | 22.6% |
| GAP factor | 6.0% | 7.7% |
| Entry model | Open | Open |
Schedule
- Endurancelife Pembrokeshire Half Marathon
Exact race date not confirmed. Event weekend starts 2026-04-25 (legacy event-level date).
- Endurancelife Pembrokeshire 12K
Exact race date not confirmed. Event weekend starts 2026-04-25 (legacy event-level date).
Location
- Endurancelife Pembrokeshire Half Marathon
- Little Haven, Wales
- Endurancelife Pembrokeshire 12K
- Little Haven, Wales
Actual distance
- Endurancelife Pembrokeshire Half Marathon
- 21.6 km
- Endurancelife Pembrokeshire 12K
- 12.1 km
raceindex.org mapped route held
- Endurancelife Pembrokeshire Half Marathon
- Held
- Endurancelife Pembrokeshire 12K
- Held
raceindex.org elevation profile held
- Endurancelife Pembrokeshire Half Marathon
- Held
- Endurancelife Pembrokeshire 12K
- Held
Surface
- Endurancelife Pembrokeshire Half Marathon
- Grass, trail, beach and coast path
- Endurancelife Pembrokeshire 12K
- Grass, trail, beach and coast path
Terrain
- Endurancelife Pembrokeshire Half Marathon
- Trail, Beach, Road
- Endurancelife Pembrokeshire 12K
- Trail, Beach, Road
Scenery
- Endurancelife Pembrokeshire Half Marathon
- Coastal, Parkland, Desert, Island, Countryside
- Endurancelife Pembrokeshire 12K
- Coastal, Parkland, Desert, Island, Countryside
Atmosphere
- Endurancelife Pembrokeshire Half Marathon
- Wilderness, Scenic Tour, Community
- Endurancelife Pembrokeshire 12K
- Wilderness, Scenic Tour, Community
Total ascent
- Endurancelife Pembrokeshire Half Marathon
- 570 m
- Endurancelife Pembrokeshire 12K
- 353 m
Climbing density
- Endurancelife Pembrokeshire Half Marathon
- 26.4 m/km
- Endurancelife Pembrokeshire 12K
- 29.2 m/km
Total descent
- Endurancelife Pembrokeshire Half Marathon
- 581 m
- Endurancelife Pembrokeshire 12K
- 343 m
Net elevation
- Endurancelife Pembrokeshire Half Marathon
- -11 m
- Endurancelife Pembrokeshire 12K
- 10 m
Max absolute grade
- Endurancelife Pembrokeshire Half Marathon
- 28.9%
- Endurancelife Pembrokeshire 12K
- 28.9%
Flat grade share
- Endurancelife Pembrokeshire Half Marathon
- 25.5%
- Endurancelife Pembrokeshire 12K
- 22.6%
GAP factor
- Endurancelife Pembrokeshire Half Marathon
- 6.0%
- Endurancelife Pembrokeshire 12K
- 7.7%
Entry model
- Endurancelife Pembrokeshire Half Marathon
- Open
- Endurancelife Pembrokeshire 12K
- 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, Endurancelife Pembrokeshire Half Marathon or Endurancelife Pembrokeshire 12K?
Endurancelife Pembrokeshire Half Marathon has the lower GAP factor, making it the flatter course on our route model and more favourable on gradient alone.