Summer Swim Challenge 2025
to
Make this your summer of swimming with the Sea Lanes Summer Swim Challenge!
Longer days, warmer waters, and three legendary distances to inspire your swims. Whether you’re chasing a new goal or just want a reason to get back in the water, this is your summer to make a splash. Track your swims online and unlock a set of digital badges created specially by local artist Mia Moseley.
Complete one or all of the three challenges based on UK channels between 10 May and 31 August 2025:
- Northern Route – 20.2KM (402 lengths)
Known for its wild waters and fierce reputation. - English Channel – 33KM (656 lengths)
The world’s most iconic open water swim, from Dover to Calais. - Bristol Channel – 121KM (2404 lengths)
One of the UK’s toughest stretches of water, famous for its extreme tides.
The Summer Swim Challenge is open to all swimmers. Do it on your way! Set a goal, track your swims, and celebrate your progress with every stroke.
At the end of the challenge, you’ll also have the chance to order physical versions of your badges, the perfect keepsake to remember your summer of swimming.
Distance guide for the Sea Lanes 50M Pool to help log your swims:
L = Lengths, M = Meters, KM = Kilometres
6 L = 300 M
10 L = 500 M
20 L = 1000 M / 1KM
30 L = 1500 M / 1.5KM
40 L – 2000 M / 2KM
50 L – 2500 M / 2.5KM
60 L – 3000 M / 3KM
80 L – 4000 M / 4KM
100 L – 5000 M / 5KM
Leaderboard
| Rank | Swimmer | Distance | Time | |
|---|---|---|---|---|
| 1 |
 Clara Burton-Dowsett
|
184.578km | 73h 15m 19s | 100% |
| 2 |
 Ben Fearnside
|
170.703km | 58h 55m | 100% |
| 3 |
 Colleen Colver
|
126.497km | 44h 47m 22s | 100% |
| 4 |
 Andy Tester
|
122.466km | 34h 13m 40s | 100% |
| 5 |
 Hildi Mitchell
|
121.347km | 43h 20m | 100% |
| 6 |
 Stuart Klein
|
120.649km | 41h 12m 39s | 99% |
| 7 |
 Laura Sharpe
|
116.999km | 41h 43m 10s | 96% |
| 8 |
 Wendy Kane
|
92.809km | 42h 54m 8s | 76% |
| 9 |
 Peyton Vellaa
|
87.796km | 30h 15m | 72% |
| 10 |
 Angela Fenwick
|
72.757km | 33h 51m 39s | 60% |