Can the two-hour barrier for running the marathon be broken legally? Nike has assembled a team to try.
The American coach of Olympic champion Mo Farah rejects claims he may have broken anti-doping rules.
Mo Farah says he is a "clean athlete" after a leaked report suggested his American coach may have broken anti-doping rules.
Three Russian athletes given clearance to compete internationally under a neutral flag by athletics' world governing body the IAAF.
Audio & Video
Mo Farah bows out of his indoor athletics career by breaking the European 5,000m record in Birmingham.
Steve Cram explains how some of Britain's best athletes are preparing for the 2017 season with altitude training in South Africa.
Around the Web
How to get into Athletics
How to get into athletics - one of the widest ranges of choice in sport, from jumps and throws to sprints or distance running.
What's on BBC Sport this week
This week's sport on the BBC includes England's ODI series with West Indies, European Indoor athletics plus FA Cup & Premier League football.