Round the Rock

Round the Rock Ultra Marathon, Jersey

Round the Rock is a multi-distance road and trail event on Jersey including an ultra, a marathon and a half marathon. Number collection is scheduled for Friday 31 July 2026 at Mason Breese Corporate Offices, 2nd Floor, 24 Hill St, St Helier. There is no race morning registration. Start locations are Steam Clock (St Helier) for the ultra, Les Fontaines for the marathon, and Watersplash (St Ouen’s) for the half.

• Ultra, Marathon, Half Marathon

Course, cut-offs and race rules

The course is marked at junctions and decision points; long straight sections may have no markers, so runners are asked to carry the GPX route on a watch or phone. The ultra has an overall 12-hour time limit and a mandatory halfway cut-off at Les Fontaines; runners failing the halfway cut-off are withdrawn. Marathon and half have no intermediate cut-offs but must finish within the event time limits; medals are awarded only to finishers within limits.

Aid stations are placed roughly every 8–10 miles and provide water, selected drinks, and basic food; the event is cupless so participants must bring a cup or bottle. The solo race rules forbid pacers, crewing and outside assistance. A mandatory kit list applies to all distances and includes a way to carry kit, warm layers, hat and gloves, whistle, compass, trail shoes, survival blanket, basic first-aid, a charged phone with navigation app, and a minimum 1000 ml drinking system. Visit the organization's website for the most recent information.