08:05Dermot O'LearyDermot is joined by Helen Glover MBE and Sara Cox ahead of their Sport Relief challengeBBC Radio 2 Duration: 1 hour, 55 minutes Sat 17th Mar 2018, 08:05 on BBC Radio 2Dermot is joined by Helen Glover MBE and Sara Cox ahead of their Sport Relief rowing race challenge.GenresMusicEntertainmentBrandDermot O'Leary Source: BBC Online