Sea to Summit: Ben Nevis Ultramarathon

OCT
10
2026
A fully waymarked, supported sea to summit ultramarathon covering 28 miles and 5400 ft of ascent from the coast to the summit of Ben Nevis.
Sat 10 Oct 2026
28 miles

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Sea to Summit Ben Nevis

Sea to Summit Ben Nevis is a one day, sea-to-summit mountain ultramarathon and part of the Rat Race National 3 Peaks Trilogy. The route covers 28 miles (45 km) with approximately +5400 ft of ascent and is listed as an event for Run/Trek and mass participation.

The course is fully waymarked with bright orange arrows and is supported by professional event medics supplied by Trail Med, including paramedics and doctors in vehicles and a private ambulance. Pit stops provide basic facilities such as toilets, medical assistance, water, hot drinks, salty snacks, sweets and fruit. Cut offs are set to a 3mph pace.

The route is about 95% trail and passes through a mix of ancient woodland, waterfalls, gorges, hidden lochans and remote moorland. The course includes fire roads, a marshy section and a technical descent option off Ben Nevis. A GPX file is available but organisers advise following the event waymarks.

Logistics include a mandatory coach transfer to the coastal startline from Nevis Range Mountain Experience Resort (PH33 6SQ) and a public car park at the finish location. Registration and tracker collection take place at Nevis Range Mountain Experience Resort. Participants must be over 18 on the day of registration. Completion of all three Sea to Summit events results in a Trilogy gold medal awarded at the finish of the final event. Visit the organization's website for the most recent information.

28 mi
Ben Nevis Ultramarathon
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