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Dark Downs 50k Pacing Calculator
Dusk till dawn on the South Downs, in one of England's darkest skies.
Distance
50 km
50km
Total climb
1341m
official D+
Total descent
1341m
official D−
High / low
243m
low 33m
100m200m
0km10km20km30km40km50km
Your goal
Goal type
:
hrsmin
Pacing strategy
Constant effort start to finish.
Pacing splits · Even effort
| Section | Length | Target pace | VAM | Vert | GAP | Elapsed |
|---|---|---|---|---|---|---|
| 0m–4.9km | 4.9km | 11:40/km | 10m/hr | +10m | 11:17/km | 57:15 |
| 4.9km–6.8km | 1.9km | 17:02/km | 262m/hr | +141m | 11:17/km | 1:29:32 |
| 6.8km–11.0km | 4.2km | 10:03/km | — | −106m | 11:17/km | 2:11:44 |
| 11.0km–12.1km | 1.1km | 15:33/km | 223m/hr | +65m | 11:17/km | 2:29:13 |
| 12.1km–17.6km | 5.5km | 12:13/km | 21m/hr | +23m | 11:17/km | 3:35:59 |
| 17.6km–18.5km | 919m | 11:01/km | — | −5m | 11:17/km | 3:46:07 |
| 18.5km–20.6km | 2.1km | 8:42/km | — | −108m | 11:17/km | 4:04:48 |
| 20.6km–21.9km | 1.2km | 15:27/km | 210m/hr | +66m | 11:17/km | 4:23:42 |
| 21.9km–24.4km | 2.5km | 11:48/km | — | — | 11:17/km | 4:53:46 |
| 24.4km–25.9km | 1.5km | 14:53/km | 178m/hr | +65m | 11:17/km | 5:15:44 |
| 25.9km–28.3km | 2.4km | 8:45/km | — | −123m | 11:17/km | 5:36:38 |
| 28.3km–31.0km | 2.7km | 14:32/km | 192m/hr | +125m | 11:17/km | 6:15:48 |
| 31.0km–34.6km | 3.7km | 11:40/km | — | −66m | 11:17/km | 6:58:39 |
| 34.6km–35.5km | 839m | 19:03/km | 300m/hr | +80m | 11:17/km | 7:14:38 |
| 35.5km–37.0km | 1.5km | 7:51/km | — | −117m | 11:17/km | 7:26:38 |
| 37.0km–38.2km | 1.2km | 15:14/km | 217m/hr | +65m | 11:17/km | 7:44:36 |
| 38.2km–39.1km | 925m | 7:25/km | — | −85m | 11:17/km | 7:51:28 |
| 39.1km–40.6km | 1.5km | 17:23/km | 256m/hr | +112m | 11:17/km | 8:17:40 |
| 40.6km–42.8km | 2.2km | 12:44/km | 88m/hr | +42m | 11:17/km | 8:46:10 |
| 42.8km–44.3km | 1.4km | 11:19/km | — | −9m | 11:17/km | 9:02:28 |
| 44.3km–47.6km | 3.3km | 9:27/km | — | −153m | 11:17/km | 9:33:35 |
| 47.6km–50.0km | 2.4km | 10:53/km | — | −21m | 11:17/km | 10:00:00 |
GAP is grade-adjusted pace, the flat-equivalent pace for the effort. On an even-effort plan it stays roughly constant while your actual target pace rises on climbs and falls on descents. Switch to “By terrain” to pace the course by its climbs and descents.