Eton Dorney offers super flat, fast and smooth tarmac roads and paths. The run course follows the lake side paths with the stunning view of Windsor castle just visible in the back ground. Perfect course for any one looking for a personal best time or just looking to complete the distance. Use the series of 3 to build up your endurance by doing a 5km then a 10km then finally the 20km. A great way to build up your training for the Marathon.