Mountain marathon is an extended form of fell running, usually over two days and often with a strong orienteering element. Competitors usually participate in teams of two, and have to carry their own food and tent. There are various classes of event (such as, for the Original Mountain Marathon - Elite, A, B, C, D and Long, Medium and Short Score).
The major events are listed below:
The Highlander Mountain Marathon which began in 2007 and was held in April at a Scottish location 'within a 2 hour drive of Inverness' has now come to an end.
New competitors can receive training from various organization for example Trail Running Scotland.
The start arrangements on the two days are usually different (and are designed to encourage navigational independence). For example, on day 1 of the SLMM a staggered start is used, with teams being sent off at 1 or 2 minute intervals, and not getting their way-cards until they are 'on the clock'. On Day 2 the overnight leaders are often sent off half an hour before the others (a 'chasing start') and a mass start, for those more than half an hour behind overnight, then follows.
The races have provided the stimulus for various items of specialist lightweight equipment, for instance lightweight tents and multipouched running rucksacks (the 'OMM Classic Marathon 25 or 32 Sac').