

"In the first half of a marathon, because you're running well below your maximum speed, it doesn't feel too hard, but after 16 or 17 miles the race begins to get really tough as you're starting to tire, but you're still very far from the end, so you have to draw on your reserves and mental strength to stay focused." Speaking from experience, she told ITV News: "If you're very well prepared, which Kipchoge will be, it's not easy, but it's do-able. She adds that "no stone will have been left unturned" by his team in their quest for victory. Mara Yamauchi believes if Kipchoge executes the 'perfect race' he will be able to break two hours. Refreshments in the form of eight pre-prepared drinks, energy and caffeine gels will also be handed to him every 3.1 miles (5km), breaching the rules.

Refreshments must be taken from official stations and not brought to an athlete.ĭuring Kipchoge's first attempt in Italy in May 2017, refreshments were brought to him and pacers swapped in and out, meaning the run fell foul of the IAAF's rules.Īgain in Vienna, pacemakers running just ahead of Kipchoge will swap in and out, but crucially the Kenyan is the only athlete attempting the challenge. Pacemakers cannot rotate in and out of a race.Īn athlete cannot be paced by a vehicle with a motor. There must be at least three competitors. The course must be measured and certified by an official. Yannis Nikolaou of the International Association of Athletics Federation (IAAF) - athletics' governing body - told ITV News that races must:īe sanctioned by the IAAF or by the Athletics Federation of the host country. So why, if Kipchoge does it, will it not be a World Record?įor a race to meet athletics' competition rules, and therefore be eligible to become a World Record, certain criteria must be met.
