Ras yr Wyddfa 2009
The thrill of the race
S4C will broadcast a special programme following the competitors in this year's Snowdon Race, one of Europe's toughest endurance challenges.
It's a 10-mile race, with competitors starting their challenging journey on the shores of Lake Padarn in the village of Llanberis and then running to the summit of Snowdon and back.
The first ever race was held in 1976 after Ken Jones from Llanberis put forward the idea to the village's Carnival Committee. 86 runners took part in the first race. This year, 450 runners will be competing.
Team of presenters
S4C's team of presenters for the Snowdon Race are Gareth Roberts, Morgan Jones, Nic Parry and Iwan Edgar. Morgan will be stationed at the summit.
The programme will present highlights of the Race from start to finish. Viewers will also get the chance to learn more about some of the runners taking part as we see them in training for the big day.
The runners
These include bakery owner Kurman Rashid from Blaenau Ffestiniog; Colin Pugh, who's a barber in Caernarfon; Bethan Dobson Jones, a member of the Eryri Harriers club, who's running the race for the first time.
Matthew Roberts, who lives in Tremadog, will also take part in the race. Matthew was taken ill during the Race last year due to the heat. He's going to have another go this year, and is hoping the weather is kinder to the runners.