[header] How to run an ultra marathon [title] Sign up for the race 3 months in advance. [step] You should give yourself at least 3 months to train, and if you've already signed up and paid for the race that's a great motivator to keep training. Find out about ultra-marathons in your area by searching online or by asking other long-distance runners you know. 
[title] Do long runs for 2 days in a row once a week. [step] Doing long runs on back to back days is important so you get used to the feeling of running on tired legs.