Dukeries 30 / 40

MAY
9
2026
Tackle a scenic one lap ultramarathon through Sherwood Forest and estates including Creswell Crags and Clumber Park, with 30.8 or 40.8 mile options. Limited to 250 runners, this May classic blends rugged trails with legendary views.
40 miles 30 miles

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Event

The Dukeries 30 / 40 is scheduled for Saturday 9 May 2026 at Walesby Sports & Social Club, Forest Lane, Walesby, Newark, Nottinghamshire, NG22 9PF. The event is a one-lap, clockwise circular loop and is held annually, usually the second Saturday in May. Entry is limited to 250 runners and minimum age to enter is 20. Distances offered:

  • 30.8 miles
  • 40.8 miles

Course and support

The route runs mostly on forest trails and footpaths, starting and finishing in Sherwood Forest and passing Creswell Crags, the Welbeck Estate, Clumber Park and the Thoresby Estate. The 40.8 mile option includes an additional forest section that passes The Major Oak. The route is way marked with tape and arrows, marshals are placed at aid stations and first aid medics will be available on course. Aid stations and approximate mile points are provided for both distances and the only enforced cut off is 10.5 hours at the A614 aid station; competitors must stop there if there is not sufficient time to complete the remaining 7 miles. Additional rules: walkers are not permitted, pacers are not allowed, crews may not use the aid stations, no drop bags, and up to 20 canicross runners are allowed. All finishers receive a HOBO Pace medal. Visit the organization's website for the most recent information.

40 mi
Dukeries 40
30 mi
Dukeries 30

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