Have you ever wanted to experience the exhilaration of open water swimming in the great outdoors? Now’s the perfect time.
Join us at Herts Young Mariners Base and enjoy the freedom, fresh air and sense of wellbeing that comes from swimming outside. Whether you’re building fitness, training for a triathlon, or simply looking to enjoy a revitalising dip with friends, it’s a great way to make the most of your time outdoors.
Herts Young Mariners Base offers an ideal setting for open water swim training, with sessions running throughout the year. In spring and summer, you’ll have access to a 350m course, while winter sessions take place on a shorter 200m loop. Throughout the colder months, the course is fully floodlit to ensure a safe and enjoyable experience.
Open water swimming is available during designated session times only:
- Tuesdays: 16:00 - 20:00
- Wednesdays: 16:00 - 20:00
- Thursdays: 16:00 - 20:00
- Fridays: 16:00 - 20:00
- Saturdays: 07:30 - 14:00
- Sundays: 07:30 - 14:00
Please note that participants must be confident and competent swimmers. For safety reasons, lake access is not permitted outside these official sessions.
For guidance on best practice in open water swimming, please visit Swim England.
Sign up to our UK Swimming Membership for £42.00 a month and enjoy unlimited use. Alternatively, drop in for a session for £10.00.

