Tri-Force open water swimming is held at the Blue Lagoon in Arlesey.

  • Price: £2
  • Open water swimming during the summer is informally organised but usually the season starts in late May and finishes in September on Saturday morning 7.00 to 8.00am and Tuesday Morning 6.30 to 7.30am.
  • Sessions are arranged via the Blue Lagoon WhatsApps group
  • Tri-force committee members have a key to access the venue
  • Please note: all open water swimming is unsupervised
  • Please act responsibly at the venue as we are guests
  • Please see rules when signing disclaimer.