Video: Find out how you can run a Half-Marathon

IAAF urges caution after reports about South Africa's world champion

He's only gone and done it again - 19.19 secs over 200m for Jamaican

Paula pulls out of WC Marathon event

Video: 400m champ loses world crown

Triple-jumper wins Britain's second World Championship Gold

Video: Jamaican wins 100m world title in 9.58 seconds

Sprinter picked to run in the 100m and 200m at the World Champs in Berlin.

Video: Olympic champion confident of breaking own world record

Triple Olympic champion playing catch-up ahead of the London Grand Prix.