Now run by the RNLI, the Lyme Regis to Charmouth Challenge Sea Swim is a sponsored open water sea swim between Lyme Regis and Charmouth. 

Starting at the sandy beach in Lyme, swimmers will swim nearly two miles (3.15k) along the Jurassic Coastline and finish in Charmouth, where a medal, hot chocolate, biscuits, water and survival blankets await. Places are strictly limited to 300 swimmers only and the event is open to anyone over the age of 14.

Participants should be intermediate or experienced open water swimmers and no swimmer will be allowed in the water without a wetsuit on.

Registration costs £40.00 plus fees per swimmer and entrants must raise a minimum of £100 through sponsorship. You can reserve your place now at https://www.eventbrite.co.uk/e/rnli-lyme-splash-swim-2026-tickets-1981416682636.

Check in for the swim opens at 7.30am and the first wave of swimmers will set off at 9am. The last wave of swimmers will leave at 9.15am.