, and the 4x15 were fitted around commuting – running to and from the train station twice a week. I think all the talk about 'mental toughness' is a bit of snake oil. Ultras aren't that hard. Running 100 miles slowly is much, much easier than running 26.2

© Getty Images If 26.2 miles just isn't enough, an ultra could be the race for you. Races longer than a marathon, ultras range from 30 miles to hundreds of miles and take place in hundreds of beautiful locations from Sussex to the Sahara

, you obviously need to use the track for your speed sessions. Substitute a pyramid session (800-1000-1200-1000-800m) at 10K pace or faster for the routine on Day 2. Your PBs await...

Q While running my last few marathons, I have felt nauseous from around 18 miles, and have vomited after finishing. I know runners need to keep hydrated, but taking on fluids seems to aggravate the problem. I’m also worried about over

the world marathon record. It provided the setting for Ethiopian runner Haile Gebrselassie to stamp his mark on the marathon when he set the current world record of 2:04:26 in 2007. This autumn race takes place in September every year so if you need a goal

| Week 12 | Week 13 | Week 14 | Week 15 | Week 16 | Week 17   This is the year to... celebrate your marathon fitness! This isn't a call to action

triathlon 1500m, 40k, 10k), compete in an Ironman 2007 Read moreDave Aitchison: Age: 28PBs: Supersprint triathlon (400m, 20k, 5k): 54:33 Olympic triathlon: 1hr 59:10Target: Olympic tri: 1hr 57 Top 30 at World Age Group Championships Read moreNatalie Creswick

Liz Yelling has been competing as a top international athlete for more than 15 years. In 2006, she won the Bronze medal in the Commonwealth Games in Melbourne and she has twice represented Great Britain in the Olympics (Athens 2004 and Beijing 2008

this will be required during a race. The variation of pace in the session will help your pace judgement, so that you'll know what pace you can maintain for different distances. Find a 10K scheduleHalf-MarathonsThis distance – 13.1 miles, or 21.1 kilometres – has

them put you off. The 13th Prague Marathon on May 13, 2007 offers a chance to run around one of the most stunning cities in Europe. The event brings sport and culture together – the course is lined with a multiplicity of live musicians, and you can