
⚠️ 2027 edition: provisional information
The date is estimated from the 2026 edition (May 2, 2026), on the same day of the week. Courses, start times, fees and description are carried over from the previous edition: check them on the official website. This page will be updated as soon as the organizer publishes them.
Available distances
Races on the programme
| Race | Distance | Elevation gain |
|---|---|---|
| Trail 64 km | 64 km | 2,286 m |
| The Double Top Ultra - Relais à 2 | 64 km | — |
| Trail 32 km | 32 km | — |
| Trail 16 km | 16 km | — |
| Trail 10 km | 10 km | — |
| Trail 5 km | 5 km | — |
About
The Double Top Ultra takes place on 1 May 2027 in Jersey, the Channel Island and British Crown Dependency, starting from St Catherine's on the island's east coast. Organised by Trail Monkey, it offers a 40-mile (64 km) ultra alongside shorter trail races on the island's coastal path, which is exposed to the elements and subject to changeable weather.
The flagship 40 Miles (about 64 km, 2,286 m of elevation gain) links St Catherine's to the ruined Grosnez Castle along the coastal path on an out-and-back route that passes the cliffs of L'Etacq. The 20 Miles (32 km), a more recent addition, turns at the halfway point at Battery Moltke, an unfinished former coastal fortification that also serves as the changeover point for two-person relay teams. Shorter options cover 10 miles (16 km), 10 km and 5 km.
The route passes historic sites including castles, caves, farms and Second World War bunkers, and crosses St Catherine's Bay, popular with sailors and anglers.
Highlights
- Island
- Seaside
- Off-road
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Races nearby
Other upcoming races around Saint Catherine's.
The C.I. 100k - Jersey
Nov 22, 2026 · Saint Catherine's · 0 km away
100 km · 50 km
Trail-Fest Jersey (Jersey Festival of Trail Running)
May 1, 2027 · Saint-Ouen · 16 km away
5 km · 10 km · 21.1 km
Trail de T'Cheu Nous
May 4, 2027 · Les Pieux · 36 km away
26 km · 13 km
Rock n'Trail
Apr 23, 2027 · Muneville-le-Bingard · 41 km away
20 km · 1.4 km
Foulées Couvillaises
Mar 22, 2027 · Virandeville · 45 km away
11 km · 18 km · 25 km
Marathon de Guernesey
Apr 12, 2027 · Saint-Pierre-Port · 45 km away
42.2 km · 1.6 km