In order to complete the Welsh 3000s Challenge you are required to have been at the top of all 15 of the mountains over 3000ft in Wales within the space of 24 hours, without using any other form of transport other than leg power. The length is around 24 miles, but the walks to the start point and down from the finish point can take it to over 30 miles in total. The walk is also known as "The 14 Peaks" (although there are officially 15 peaks, or possibly 16). Learn More