Starting in Eastbourne, runners will climb Beachy Head and the Seven Sisters before following the South Downs Way to Brighton. From there, you will face Devil's Dyke and a few more ups and downs before finishing in historic Arundel.
Pick the full 100km challenge or choose 55km, 45km or 25km routes. You can walk, jog or run.
As Asthma + Lung UK are an official partner with the Ultra Challenge series, you get a 25% discount on the ‘Full Sponsorship’ registration fee when signing up to support us.
Why not see what other challenges are on offer? Visit the Ultra Challenge Series website.