List of every 30 Mile and 50KM Ultra-Marathon Race in the UK

30-Mile & 50km Ultra-Marathon Races in the UK: The Complete Guide

Whether you are looking for a fast, flat 50km coastal blast to set a personal best or a technical 30-mile mountain loop to bag your first peaks, the UK’s entry-level ultra-marathon calendar is more diverse than ever. From the jagged, technical ridges of Eryri (Snowdonia) to the rolling chalk downs of Southern England, these distances offer the perfect bridge between road marathons and the world of long-distance trail endurance.

Finding the right "starter" ultra requires more than just a date and a location—it requires data. This is why we have built the most comprehensive, runner-first database of ultra-marathons in the United Kingdom. We have cataloged every 50km and 30-mile event across Wales and are rapidly expanding through England and Scotland to give you a transparent look at what each race really involves—from elevation per kilometer to terrain technicality.

Use the map and list below to filter by steepness, support levels, and difficulty to find your next 50km or 30-mile start line.