The Bog Run | 2026

The 2026 Bog Run takes place on Sunday, 11 October 2026 at Castlewellan Forest Park in County Down, Northern Ireland. Hosted by Cancer Fund for Children, this iconic fundraising event delivers one of the most unique and challenging 5km obstacle-style runs in the UK and Ireland.

Known as the “muddiest 5km around,” the Bog Run is a fun, untimed challenge where participants tackle forest trails, mud pits, natural obstacles, and even water sections along the route. Expect to crawl, climb, and wade your way through an unforgettable course designed to test both endurance and spirit.

Open to both juniors and adults, the event welcomes runners, walkers, families, and groups of friends looking to take on the challenge together — all while raising vital funds to support children and young people impacted by cancer.

Event Highlights

• 5km obstacle-style mud run through forest terrain
• Fun, untimed format – walk, jog, or run
• Obstacles include mud pits, climbing, and water crossings
• Junior and senior participation options
• Fundraising event supporting children with cancer

Race Day Experience

Participants start in waves throughout the day, creating a high-energy atmosphere filled with teamwork, laughter, and determination. Expect a messy, cold, and physically demanding experience — but one that’s incredibly rewarding and memorable.

With over 3,000 participants historically taking part, the Bog Run has become a standout charity event, combining adventure with purpose.

Whether you’re tackling the course solo or as part of a team, the Bog Run offers a unique opportunity to challenge yourself while making a meaningful impact.