Sun 20 Jul 2025 Eastbourne, East Sussex, UK

TriBourne Festival of Endurance | 3.8K Swim

Award winning full and middle-distance triathlons, plus a marathon, long-distance swims, aquabike options and triathlon relays.

  • Sun 20 Jul 2025
Western Lawns, Eastbourne

3.8K Swim

06:00

All ages

£50

  • 3.8 km sea swimming
  • Enter online
  • Event village
  • Newcomers

Event overview

Experience the beauty of the South Downs. Starting with a spectacular jump from the end of Eastbourne's historic pier, the TriBourne Festival of Endurance has been described by competitors as a must-do 'bucket list' event.

This event is part of TriBourne Festival of Endurance.

Event details

  • All fitness levels
  • Event village
  • Newcomers

Entries

  • All ages
  • Entries open
  • Enter online

Other races at event

  • Sun 20 Jul 2025
  • #1 of 7
Western Lawns, Eastbourne

Full Distance Triathlon

05:50

Age 18 & over

£360-£396

  • 2.4 miles sea swimming
  • 112 miles road cycling
  • 26.2 miles trail running
  • Sun 20 Jul 2025
  • #2 of 7
Western Lawns, Eastbourne

Middle Distance Triathlon

06:00

Age 18 & over

£198-£240

  • 1.2 miles sea swimming
  • 56 miles road cycling
  • 13.1 miles trail running
  • Sun 20 Jul 2025
  • #3 of 7
Western Lawns, Eastbourne

Full Distance Aquabike

06:00

Age 18 & over

£198

  • 2.4 miles sea swimming
  • 112 miles road cycling
  • Sun 20 Jul 2025
  • #4 of 7
Western Lawns, Eastbourne

Middle Distance Aquabike

06:00

Age 18 & over

£132

  • 1.2 miles sea swimming
  • 56 miles road cycling
  • Sun 20 Jul 2025
  • #5 of 7
Western Lawns, Eastbourne

Marathon

12:00

Age 18 & over

£55

  • 26.2 miles trail running
  • Sun 20 Jul 2025
  • #7 of 7
Western Lawns, Eastbourne

1.9K Swim

06:00

All ages

£45

  • 1.9 km sea swimming