Question 1

What counts as an ultra marathon?

Accepted Answer

Any running race longer than the standard marathon distance of 42.195 km (26.2 miles). Common ultra distances are 50K, 50 miles, 100K and 100 miles.

Question 2

What's the shortest ultra marathon distance?

Accepted Answer

50 kilometres (31 miles) is the traditional entry-level ultra and a good first step from the marathon distance. Many UK 50Ks run on trail or canal-side routes.

Question 3

How long does it take to train for a 50K ultra?

Accepted Answer

Most runners need 16 to 24 weeks if they already have marathon experience. Training focuses on time on feet rather than mileage, with long runs of 4 to 6 hours.

Question 4

Do UK ultras require mandatory kit?

Accepted Answer

Yes — most ultras require waterproof jacket, hat, gloves, food, water, whistle and map. Mountain and longer events often add survival bag, head torch and spare layers. Always check the race-specific kit list.

Ultra Marathons in South West 2026

Upcoming ultra marathons in South West

Dartmoor Discovery Ultra Marathon

Endurancelife Classic Quarter

Cotswold Way Challenge

Scilly60 Race

Exmoor Perambulation

Jurassic Coast 100

Beat The Ferry 50K & Studland 25K

Jurassic Coast Ultra Run

Something Wild Trail Festival Ultra

South Hams Ultra

Dartmoor Way 100 Full Circle

Dartmoor Way Granite 50

Run To The Sea Ultra Bournemouth

Other distances in South West

Ultra Marathons in other UK regions

Frequently asked questions