Find 100k ultra runs near me in South East for 2025/2026 - search by date or place, display on a map or use the advanced search to find your perfect race.
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Great challenges need great settings, and up to 2,000 adventurers will take on the Isle of Wight stunning coastal path – all out to push themselves further.
The full 106km circumnavigation of the Isle of Wight, in daylight hours. Overnight at Cowes for a well-earned rest on this wonderful exploration of the coastal routes around the island.
Take on the full 100K Race to the King ultra marathon challenge in one go. Fully supported through day and night on a route combining castles and coastal scenery.
Take on the full 100K ultramarathon in one go. Fully supported through day and night on an incredibly scenic and historic route to finish at the 5000-year-old Avebury standing stones.
Take on the full 100K Race to the Stones ultramarathon with an overnight stop at the all-inclusive Basecamp, meaning a good nights' sleep in between the 50K stints.
Take on the full Race to the Stones 100K ultramarathon over two days, making your own arrangements for overnight accommodation at the halfway point (ideal if you'd prefer not to camp).
The full distance option of the South Coast Challenge from sunny Eastbourne, over the magnificent Seven Sisters, onto Cuckmere Haven and over the South Downs all the way to historic Arundel.
The full distance option of the South Coast Challenge over 2 days with 57km on day 1 and 43km on day 2, meaning you experience the route in daylight with the chance to sleep overnight.