Mountain marathon is a variant of fell running, typically held over two days, and often incorporates a strong orienteering element. Competitors usually participate in teams of two and must carry their own food, tent, and other essential gear. Events feature various classes (e.g., for the Original Mountain Marathon: Elite, A, B, C, D, and Long, Medium, and Short Score).
Original Mountain Marathon (OMM) – Formerly the Karrimor International Mountain Marathon (KIMM); takes place in a UK hill or mountain area on the last weekend of October.
Swiss International Mountain Marathon – Held in Switzerland in mid-August. Formerly known as KIMM Switzerland, Mammut International Mountain Marathon, and R'adys Mountain Marathon.
The Highlander Mountain Marathon, which began in 2007 and was held in April within two hours' drive of Inverness, has now ended.[3]
Start arrangements typically differ between the two days to emphasize navigational skill:
**Day 1** – Events like the SLMM use a staggered start, with teams leaving at 1–2 minute intervals and receiving their route cards only after their time begins.
**Day 2** – Usually features a "chasing start," where the overnight leaders start first, followed by a mass start for remaining teams.
