Jurassic Coast 100KM Ultramarathon

Jurassic Coast 100km Ultra Marathon - Climb South West

Experience the awe-inspiring beauty of England’s only natural UNESCO World Heritage Site. The Jurassic Coast 100km Ultramarathon is a phenomenal, brutal and breathtaking journey along one of the most spectacular coastlines in the world.

Organised by the experienced team at Climb South West, this 100km ultra is the perfect sweet spot for endurance athletes. It offers all the dramatic scenery and punishing elevation of the monumental 100 mile Extinction ultra, but condensed into a highly competitive, single-push 100km distance.

Course

Do not be deceived by the promise of a coastal run; this is not a flat day at the beach. The South West Coast Path along the Jurassic Coast is infamous for its "sawtooth" elevation profile.

• The Terrain: You will be tackling a relentless, gruelling series of steep ascents and descents. Every time the trail drops down to a beautiful, secluded cove or shingle beach, you face an immediate, lung-busting climb back up the cliff face. Expect hard-packed dirt, rocky staircases, grassy headlands, and energy-sapping pebbles.
• The Scenery: The suffering is entirely offset by the views. Running along 250 million years of geological history, you will pass iconic coastal landmarks, towering chalk cliffs, and sweeping bays.
• The Challenge: The 100km distance on this specific terrain requires immense leg strength. You are constantly climbing or descending, meaning your quads will take a serious battering.

Support

Climb South West events are highly regarded for their runner-focused logistics and safety protocols, ensuring you can focus entirely on the trail ahead.

• Live Tracking: Every participant is issued a GPS tracker. This provides a crucial safety net on remote cliff paths and allows your friends and family to "dot-watch" your progress from home.
• Checkpoints: The route is supported by a series of strategically placed, fully stocked aid stations. Friendly volunteers will be waiting with hot drinks, varied ultra-running snacks, and essential encouragement.

The Jurassic Coast 100km by Climb South West is a masterclass in coastal endurance. 100km is a highly respected ultramarathon distance, and completing it on the Jurassic Coast elevates the achievement significantly. It is the perfect race for runners stepping up from 50 miles who want a monumental challenge, or for seasoned ultra veterans looking to test their climbing legs against one of Britain's most iconic national trails. For the most up-to-date event details, complete registration information, and to secure your place on the start line, please visit the official race website.