Big Bertha Trail Run

AUG
22
2026
A 12 hour trail challenge on a 10 km loop around Bertha Loch where runners go solo or in teams. The event features chip timing with live results, water on course, medics, marked marshalled trails, prizes and medals for finishers.
Sat 22 Aug 2026
10 kilometers

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Big Bertha Trail Run

The Big Bertha Trail Run on 22/8/26 is a 12 hour endurance event held on trails around Bertha Loch and Almondbank. The course is a 10 km loop; participants complete as many 10 km laps as they choose within the 12 hour period. The event accepts solo runners and teams.

The event uses chip timing with live results as runners cross the finish. Water is provided on course at approximately 5 km. The route is fully marked and marshalled and a medic team is present. Insurance for participants is included. Prizes are awarded for the furthest distance and for female, male and non-binary winners, and every finisher receives a medal produced by The Workshop Aberfeldy. Free all-day parking is available and refreshments are offered at the finish by Starfish Cakes and Bakery. The event is organised by Wee Run Events, a community interest company based in the central belt of Scotland that runs not for profit events and has over 40 years of event experience. Previous editions took place in 2024 and 2025. Visit the organization's website for the most recent information.

10 km
10km Laps
12-Hour Challenge

Events nearby

A new up and down hill race at the Kinross Show on 8 August 2026 with a mostly pathless 2.3 mile route, 750 ft ascent and included show access.
A long hill race on 15 August 2026 covering 26.07km with 1438m ascent across East and West Lomond. The unwaymarked route follows checkpoints, requires navigation and mandatory kit, and offers prize categories and a GPX file.
A 10 km marked trail around Bertha Loch and Almondbank with technical and muddy sections, woodland terrain and handcrafted finisher medals. Routes change by season and the August run accompanies a 12 hour lapped event.
A 5.7 mile off road trail race in Cardenden Woods on 23 August 2026 that passes the historic duel site and features varied, often muddy terrain.
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