Six hundred athletes are busy preparing to tackle one of the year's toughest mountain race events, the International Snowdon Race. They will face a gruelling 10-mile race, from Cae'r Ddol on the shores of Llyn Padarn to the summit of Snowdon (1085 metres, 3650ft) and back down again.
S4C will aim for the great heights of Wales' highest peak with the highlights programme Ty'n Lôn Volvo Ras yr Wyddfa on Sunday, 22 July. Gareth Roberts hosts the coverage with Morgan Jones at the summit and Nic Parry commentating on the excitement of the race.
The annual Snowdon Race attracts athletes from all around the world and each runner has a personal story and different reasons for running. The team will catch up with the athletes before, during and after the race.
One of the race's most successful runners since its inception in 1976 is Manchester's Andi Jones, and he will be featured in the programme. Andi won the race for the fifth time in 2011 and this year, he'll be hoping to extend his record. There was quite a battle between Andi and Murray Strain from Scotland during last year's race with Murray pushing Andi right to the bitter end.
S4C presenter Gareth Roberts says, "Without a doubt Andi Jones is Ras yr Wyddfa's most successful athlete and his record in the competition is astonishing. I'm sure he'll be looking to better his time again this year and extend his victories to six first-place finishes. But he has a strong opponent in Murray Strain - who made quite an impression during the 2011 race. He'll certainly have one eye on the main prize as he hopes to go one better this year."
The women's race has also been competitive in recent years as teams from England and Scotland battle for the top spot. Pippa Jackson was the women's champion in 2011 but this year sees the debut of two new athletes - Emile Forsberg from Sweden and Russia's Zhanna Vokueva - and they will have set their sights on breaking records.
The race is now part of the Skyrunner World Series and this has given the event new status and means it attracts more runners of international renown to take part.
Race organiser, Stephen Edwards says, "We've always striven to get the best here to compete but being part of the Skyrunner World Series has given the race a significant boost. We're extremely pleased as well that the race will be on television once again especially as the Snowdon International race is iconic to Wales and because we had such an exciting event last year."