After back-to-back Olympic gold medals over 800m in 2012 and 2016, South Africa's Caster Semenya is bidding for 1500m glory on the Gold Coast today. Also in action on a busy day at the track is London 2012 Olympic 400m champion Kirani James of Grenada.
In the pool, Wales's two-time Olympic silver medallist Jazz Carlin goes for glory in the women's 400m freestyle - one of 26 gold medals awarded.
Clare Balding and Gabby Logan present the highlights