
Poole Harbour, United Kingdom · Sunday 26 April 2026
Jurassic Coast Ultra Challenge is a demanding trail running event held along the iconic Jurassic Coast in Dorset, UK. The race features multiple distances, including a 100 km ultra, 50 km, and 25 km, catering to trail enthusiasts of all levels. The course passes through stunning coastal landscapes, offering breathtaking views of the sea and surrounding cliffs.\n\nThis ultra challenge is not just about endurance but also about immersing oneself in nature. Participants can enjoy the unique geologi
Adjusted Time
5:17:04
Time difference: +77.1 minutes compared to a flat, road, temperate course.
Jurassic Coast Ultra Challenge is a full marathon held in Poole Harbour, United Kingdom, scheduled for Sunday 26 April 2026. The course is run on trail surface with 1475m of total elevation gain, reaching a maximum altitude of 197m above sea level. For registration and full race details, visit the official Jurassic Coast Ultra Challenge website.
This is a very challenging course with 1475m of total elevation gain — significantly more than the average trail marathon. The route ranges from 0m to 197m above sea level (197m range). Hill training is essential, and runners should expect a significantly slower time compared to a flat course.
Based on historical weather data for April, the expected race day conditions are as follows. Cold conditions are expected, with temperatures between 0°C and 15°C. While cold weather reduces overheating risk, runners should dress in layers and be prepared for potential wind chill. There is a moderate chance of rain (38%). Runners may want to prepare for wet conditions but shouldn't expect persistent rainfall.
Jurassic Coast Ultra Challenge is a trail race, meaning the course includes unpaved surfaces such as dirt, gravel, or forest paths. Trail surfaces are inherently slower than road courses due to uneven footing, technical sections, and often steeper gradients. Trail-specific shoes with good grip are recommended, and runners should expect a finish time 10-20% slower than their equivalent road marathon time.
Our difficulty rating for Jurassic Coast Ultra Challenge is calculated using a model that combines elevation gain, temperature impact, and surface type. Use the difficulty calculator above to enter your target finish time and see exactly how many minutes this course would add or subtract compared to a perfectly flat, cool, road-based marathon. Faster runners and slower runners are affected differently by the same course conditions, so the difficulty is personalised to your pace.
Looking for an easier marathon or a tougher challenge? You can also compare Jurassic Coast Ultra Challenge against other marathons to find the right race for your goals.
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