Hilsea Lido is excited to present the Autumn 5K Swim Challenge 2026! This year we are supporting the charity Parenting Network Portsmouth. This is an opportunity to swim 5K but broken down into 25 x 200m intervals. The challenge will run on the morning of Sunday 25th October in the recently renovated Hilsea Lido!

Swimmers will need to have a good level of endurance and be able to swim and rest off the below times. Pick your speed - we have 3 lanes available: 
Lane 1: Swim and Rest off 1 min 45 per 100m 
Lane 2: Swim and Rest off 2 mins per 100m
Lane 3: Swim and Rest off 2 mins 15 seconds per 100m

Briefing at 08:30AM and swim starting at 9AM.

The pool is unheated and as we are an outdoor venue, the temperature can fluctuate. Rashvests and Wetsuits are permitted.