When elite ultrarunners have a need for speed, they turn to coach Jason Koop. Now the sport’s leading coach makes his highly effective ultramarathon training
Ultramarathons don’t leave much room for mistakes. Don’t learn the hard way: get a jump on training for an ultramarathon with Hal Koerner’s Field Guide to
It’s no secret that if you plan to run in the toughest endurance races, you need to physically prepare for the extreme demands you will be subjecting your bod
'Filled to the brim with advice, tips and inspiration to enable you to achieve your dreams over whatever distance you want your legs to carry you' Chrissie Well
***Updated and expanded new edition*** An Updated, Interactive Guide to Take Your Running to the Next Level With 20 years of running and competing around the wo