HOW TO TRAIN FOR YOUR FIRST ULTRA.
An ultra marathon is any race longer than 26.2 miles (42.2km). Most UK ultras are 50km, 50 miles, or 100km. It sounds impossible until you realise the secret: ultras are not about speed, they're about moving forward. If you can run a marathon, you can run an ultra with the right preparation.
Run a marathon first (or at least train for one)
You need a solid base of 40-50km per week before starting ultra training. If you haven't run a marathon, do one first — or at least complete a 16-week marathon training block. The marathon base teaches you to manage fatigue, nutrition, and mental resilience over hours, not minutes.
Increase weekly volume, not intensity
Ultra training is about time on feet, not speed. Build to 60-80km per week over 12-16 weeks. Most runs should be easy pace (you can hold a conversation). Add 10% per week maximum. One long run per week: build from 25km to 40km+. Back-to-back long runs on weekends (e.g. 30km Saturday, 20km Sunday) simulate ultra fatigue.
Train on similar terrain to your race
If your ultra is hilly, train on hills. If it's trail, train on trail. Flat road ultras (like Thames Path) are more forgiving for first-timers. Browse ultra events to pick a race, then train on similar terrain. UK ultras with good reputations for first-timers: Centurion Running, Ultra X, Lakeland series.
Master your nutrition strategy
You cannot run an ultra on gels alone. After 4+ hours, you need real food: sandwiches, potatoes, rice cakes, soup, bananas. Train your stomach by eating during long runs. Target: 200-300 calories per hour. Practice what you'll eat at aid stations. Never try new food on race day.
Build your mandatory kit list
Most UK ultras require mandatory kit: waterproof jacket, emergency blanket, whistle, headtorch (for overnight races), 1L water capacity, phone, basic first aid. A running vest with 10-12L capacity fits everything. Test every piece of kit on training runs — chafing at mile 30 is a race-ender.
Train your mind
At some point in an ultra, you will want to quit. This is normal. Break the race into checkpoints, not total distance. Walk the uphills from the start — walking is a strategy, not a failure. Listen to your body: genuine injury is a reason to stop, being uncomfortable is not. Talk to other runners — the ultra community is the friendliest in endurance sport.
Taper and race strategy
Two-week taper: cut volume by 40% in week 1, 60% in week 2. Race strategy: start slower than you think. If your target is 10 hours, run the first quarter at 12-hour pace. Eat at every aid station even if you're not hungry. Change socks at halfway if the race offers a drop bag. Walk all hills over 10% gradient from the start.
Stay in the loop.
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