← All races50-mile coastal ultra
Ring O'Fire: Firelighter 50 Pacing Calculator
A shorter lap of Anglesey's coast, same organizers as the full Ring O'Fire.
Distance
50 mi
80km
Total climb
1372m
official D+
Total descent
1372m
official D−
High / low
87m
low 1m
25m50m75m
Start (Holyhead Breakwater Country Park)
CP1 Penrhyn Bay Caravan Park4:08:00
CP2 Cemaes Bay8:37:00
CP3 / Finish (Moelfre Primary School)15:00:00
0km20km40km60km80km
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–20.5km | 20.5km | 10:08/km | — | −27m | 10:07/km | 3:27:37 |
2CP1 Penrhyn Bay Caravan Park Arrive3:27:37☀ 12:27 PM Rest 2min Leave3:29:37☀ 12:29 PM Cutoff 4:08:00+40:23 | ||||||
| 20.5km–43.2km | 22.7km | 10:36/km | 3m/hr | +13m | 10:07/km | 7:30:43 |
3CP2 Cemaes Bay Arrive7:30:43☀ 4:30 PM Rest 2min Leave7:32:43☀ 4:32 PM Cutoff 8:37:00+1:06:17 | ||||||
| 43.2km–59.0km | 15.8km | 10:43/km | — | −23m | 10:07/km | 10:22:07 |
| 59.0km–60.4km | 1.4km | 11:07/km | 86m/hr | +22m | 10:07/km | 10:37:24 |
| 60.4km–63.3km | 2.9km | 10:10/km | — | −9m | 10:07/km | 11:06:56 |
| 63.3km–64.6km | 1.4km | 13:03/km | 171m/hr | +51m | 10:07/km | 11:24:47 |
| 64.6km–75.0km | 10.4km | 10:19/km | — | −61m | 10:07/km | 13:11:45 |
4CP3 / Finish (Moelfre Primary School) Arrive13:11:45☾ 10:11 PM Rest 0min Leave13:11:45☾ 10:11 PM Cutoff 15:00:00+1:48:15 | ||||||
| 75.0km–80.0km | 5.0km | 10:27/km | 18m/hr | +16m | 10:07/km | 14:04:00 |
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. The highlighted rows are aid stations: edit your rest with the ± steppers and every arrival, departure and the 4:00 of total stopped time folds into the elapsed clock. The cutoff badge shows your buffer against the official cutoff at arrival. The ☀/☾ is the wall-clock hour from the official 9:00 AM start, so you know when to expect a headlamp.