Thames Marathon

The Thames Marathon is an endurance swim between Henley-on-Thames and Marlow with a choice of 2 distances. It covers a beautiful stretch of the Thames and has become one of open water swimming’s most prestigious marathon swims. The Event Village and Parking will be in Marlow, swimmers will be transported by coach to the full or half distance start, and will swim back to Marlow. There is also the option to walk or run to the start of the half-marathon.