Breakfast show host Greg is five days into an eight-day trek, travelling 1,000km through England, Wales and Scotland to his final destination in Edinburgh. During the latest leg, Prince William hopped on the rear saddle, pedalling for about 30 minutes through the South Yorkshire countryside before informing Greg he had already raised more than £1m for Comic Relief. Speaking after the ride, Greg told fellow Radio 1 hosts Sam MacGregor and Danni Diston he was still processing the surprise. The two recently worked together on a special edition of Radio 1's Life Hacks, where they discussed male mental health and male suicide. He previously completed five triathlons in five days in 2016 before cycling between - and climbing - Scafell Pike, Snowdon and Ben Nevis two years later. Radio 1's Longest Ride with Greg James for Red Nose Day will be broadcast live across Radio 1, as well as on iPlayer and YouTube during his journey.