Bayliss competed in swimming, cycling, running, triathlons and water polo in his career, competing for England at Junior Level in water polo and youth level for Great Britain in duathlon and triathlon.
He crossed the English Channel solo on 4 September 2007 in 11 hours 32 minutes and as part of a 4-person relay team, the Croydon Amphibians Masters. I have competed in the 26.4 km Sri Chinmoy Lake Zurich Marathon Swim 3 times, raced 2 Ironmen triathlons, 13 marathons and 8 ultras, including the Marathon des Sables.
- Enduroman Arch to Arc fundraiser
- Team Bayliss website
- Mark Bayliss blog
- Croydon Amphibians Masters Team website