Gone are the days when Genzebe Dibaba s form would take a dip during the outdoor season.

Two years ago in Moscow, Mo Farah completed the second part of his distance double when he unleashed a sizzling 53.44 last lap to successfully defend the title he had first won in 2011.

Perhaps the biggest obstacle Genzebe Dibaba must overcome in her attempt to win the 5000m is the competition timetable.

After the great miler Herb Elliott had thrashed a field of the world s best, Ireland s Olympic champion miler Ron Delany wondered whether there was any way to beat Elliott.

Tirunesh Dibaba, Linet Masai and Vivian Cheruiyot have won the past nine global 10,000m titles between them.

Marathons have always been notoriously difficult to predict. Adding to the complexity is that championship marathons are almost invariably run as races in unfavourable conditions while most of the assessable form comes from performances in cooler condi...

Two years ago, Edna Kiplagat made history by becoming the first woman to win back-to-back world titles in the marathon. The Kenyan now has the opportunity to win a third successive gold medal.

As time and distance define athletics, the role of long-standing IAAF partner Seiko in ensuring the validity and accuracy of both should not be underestimated.

In the past few weeks, the IAAF has made significant efforts to correct erroneous and misleading information with respect to its commitment to the fight against doping in athletics, disseminated mainly by some sections of the British media.

The provisional entry list for the IAAF World Championships, Beijing 2015 is now available.