How to Pick Your First Ultramarathon
Quick answer: For your first ultramarathon, pick a 50K with generous cut-off times, regular aid stations, a course with climb and terrain you can train for, and a date that leaves you enough months to build up. Choose a race close enough that travel does not add stress, check the required gear list early, and make sure you have already finished a shorter trail race.
1. Start with a 50K
A 50K (about 31 miles) is roughly 8 km longer than a marathon (42.2 km), which makes it a natural first step into ultra distances. It is the shortest common ultra distance, so it is a good place to practise pacing, eating and drinking on the move, and carrying gear. Training: 50K training plan.
2. Look at cut-off times first
Cut-offs decide whether a race is realistic for you. Compare them with your pace on similar terrain in training. Generous cut-offs let you walk climbs and take your time at aid stations.
3. Check climb and terrain
Total climb and technical ground can matter more than distance. Choose a course that matches where you can train: if you live somewhere flat, a very steep mountain course is a harder first step.
4. Count the aid stations
The longest gap between aid stations tells you how much water and food to carry. Closer aid stations mean a lighter pack; see how much water to carry and the fuel guide.
5. Read the required gear list
Many ultras require items like a jacket, headlamp or emergency blanket. Get the list early and train with it; see the race checklist.
6. Give yourself enough time
Choose a date that leaves you months, not weeks, to build long runs gradually, with time for a shorter trail race first if you have not done one.
7. Keep logistics simple
A race close to home means less travel, familiar food and a normal night's sleep. If the race is at altitude, read how to prepare for a trail race at altitude.
Checklist for your first ultra
- 50K distance
- Cut-offs you can meet comfortably
- Climb and terrain you can train on
- Regular aid stations
- Read the required gear list and train with it
- Enough months to train
- Finish a shorter trail race first
What to carry
For a 50K with regular aid stations, many runners use an 8L vest with room for water, food and required gear, such as the ROOT8. Our hydration pack guide for 50K and ultra races goes into detail.
FAQ
Is walking allowed in an ultra?
Yes. Most ultrarunners hike the steep climbs; see when to run and when to hike uphill.