⚠️ 2027 edition: provisional information
The date is estimated from the 2026 edition (August 3, 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 |
|---|---|---|
| Round the Rock | 77 km | 1,770 m |
| Round The Rock - relais à 2 | 77 km | 1,770 m |
| Round The Rock - relais à 5 | 77 km | 1,770 m |
| Trail 42 km | 42 km | — |
| Trail 21 km | 21 km | — |
About
Round The Rock is held in St John, Jersey, on 2 August 2027, with a 77 km (48-mile) ultra trail alongside a marathon and a half marathon. Jersey is a Channel Island just 20 km off the French coast, and the race, held every August for the past ten years, follows the island's coastline anticlockwise, between cliffs, sandy beaches and woodland.
The three formats are a marathon (42.195 km), a half marathon (21.0975 km) and the 77 km ultra, with 1,770 metres of elevation gain, which can also be run as a team of two or five. The route crosses St Ouen's Bay, the island's largest bay, and Jersey National Park with its 145 hectares of dunes and granite rocks, before passing close to La Corbière lighthouse. The finish is in St Helier, the island's capital, known for its Victorian architecture and fishing harbour.
Highlights
- Seaside
- Point to point
- Off-road
- Forest
- Cliffs
- Park
- Castle
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Races nearby
Other upcoming races around Saint John.
Trail-Fest Jersey (Jersey Festival of Trail Running)
May 1, 2027 · Saint-Ouen · 8 km away
5 km · 10 km · 21.1 km
The C.I. 100k - Jersey
Nov 22, 2026 · Saint Catherine's · 8 km away
100 km · 50 km
The Double Top Ultra
May 1, 2027 · Saint Catherine's · 8 km away
64 km · 32 km · 16 km · 10 km
Marathon de Guernesey
Apr 12, 2027 · Saint-Pierre-Port · 37 km away
42.2 km · 1.6 km
Trail de T'Cheu Nous
May 4, 2027 · Les Pieux · 38 km away
26 km · 13 km
Les Randos de Barbey
May 14, 2027 · Saint-Sauveur-le-Vicomte · 46 km away
25 km · 12 km