The Iron Keep 5 Hour Siege Run

Carron Valley Reservoir, United Kingdom • 4 Apr 2026

The Iron Keep - 5 Hour Siege Run

The Iron Keep is a five hour endurance event held in and around a medieval-style village at Carron Valley, with the event HQ located at Duncarron Medieval Village. The objective is to complete as many full laps as possible within the five hour time limit; only laps started before the final bell count toward totals. Entrants may compete solo or as part of a team.

The course is a multi-lap route with the start and finish in the village centre. Runners pass spectators, team camps, and the central race hub on every lap. As daylight gives way to night, torches are lit along the course and traditional music plays in the square. The village square serves as the event hub, featuring a tavern-style aid station, team camp and rest areas, live announcements and music, and clear lap counting with race updates.

There are three entry categories: Solo, Pairs and Quads. Team entries run relay-style with only one team member on course at a time. Fancy dress is strongly encouraged; costumes must be safe to run in and comply with race kit rules. Prizes include Best Individual Costume, Best Team Theme and a People’s Champion chosen by crowd vote. Winners in performance categories receive themed titles such as Iron Keep Champion and Lord and Lady of the Keep. Entries open 1 February and pre-registration is available. Entrants must be aged between 16 and 100 on the event date. Visit the organization's website for the most recent information.

Race information

5 hr
Pairs
5 hr
Solo
5 hr
Quads
Visit the organization's website for the most recent information.
Trail runs nearby

Join EpicTrails 10km on 22 January 2026 from Milngavie for a friendly social trail run exploring the Clyde Coastal Path and sections of the West Highland Way. Guided, non competitive and welcoming, the small group pace varies and proceeds s..

Join the Buchlyvie 10k trail on 24 January 2026 in Stirling for a mostly flat out and back on an old railway track, chip timed with great support and post race baking. Limited to 300 runners, fun medals and goodie bags for all.

Run a scenic 21 mile loop around Ardgartan Peninsula with about 3,500 ft of climbing, mostly off road through forests and coastal hilltops. Expect testing winter weather and a steep return to the Rest And Be Thankful.

Trailspire Ultra returns to Callander Park, Falkirk with a redesigned loop for a six hour endurance challenge. Run solo or as a two person team and rack up as many 4.14 mile laps as you can on a fully marked marshalled course.