Prepared runners
Carry the mandatory kit, load the GPX and bring the food, water and equipment needed to manage yourself between checkpoints.
Jersey • Saturday 31 July 2027
Round the Rock
A full coastal journey around Jersey. Choose the 48-mile Ultra, coastal Marathon or Half Marathon and experience the island’s cliffs, bays, headlands and trails.
48-mile Ultra
Trail Marathon
Trail Half Marathon
Marked at decision points
Cupless event
One island. Three distances.
Jersey’s coastal trail challenge
Round the Rock follows Jersey’s coastline anti-clockwise towards a shared finish in St Helier. Each distance joins a different point of the same coastal journey, from the full 48-mile island lap to the final 13.1 miles along the west and south coasts.
This is a small, independent event supported by local volunteers. The route is marked at decision points, checkpoints are simple and practical, and runners are expected to arrive prepared to manage themselves between support points.
Read about the race ethos
Choose your challenge
Three ways to travel the coast
Each race follows part of the same anti-clockwise coastal route and finishes in St Helier.
Full island route
48-mile Ultra
Start at the Steam Clock in St Helier and complete a full anti-clockwise lap of Jersey.
Explore the Ultra →
North, west and south coasts
Marathon
Start at Les Fontaines and follow Jersey’s rugged north coast, west coast and south coast to St Helier.
Explore the Marathon →
West and south coasts
Half Marathon
Start at The Watersplash and follow the final coastal section through to the shared finish in St Helier.
Explore the Half Marathon →
Essential information
Plan your race day
The Race Day Information page contains registration details, start times, mandatory kit, checkpoints, course marking, cut-offs, travel, toilets, drop bags, safety procedures and event rules.
Corporate partnerships
Support one of Jersey’s most distinctive endurance events
Round the Rock brings runners, volunteers, supporters and local organisations together for a full day around Jersey’s coastline. We work with a small number of businesses that want to support local sport, community participation and responsible use of the island’s outdoor spaces.
Partnerships can be shaped around practical event support, financial sponsorship, checkpoint involvement, equipment, transport, volunteer support or branded race-day activity.
Visible local presence
Branding across event communications, race materials and selected
race-day locations.
Meaningful involvement
Opportunities for staff teams to volunteer, support checkpoints
or become part of the race-day experience.
Flexible partnerships
Packages can be tailored around your objectives, budget and the
type of support your organisation can provide.
Small race. Big coastline.
Grit over glamour
Round the Rock is built around the route, the challenge and the people who make the event possible.
Practical support
Expect friendly volunteers, clear safety procedures and simple checkpoint supplies rather than elaborate race infrastructure.
Respect for the island
Share paths responsibly, give way to the public, leave no litter and treat volunteers, residents and other runners with respect.
Round the Rock 2027
Ultra, Marathon and Half Marathon entries are available for Saturday 31 July 2027.
Another Jersey trail challenge
Beast of the East
Choose the Trail Half Marathon from St Catherine’s Woods or the 10K from Bouley Bay. Both routes explore Jersey’s eastern trails and rugged north coast before finishing at Devil’s Hole.