Run an Ultramarathon
Prepare for a race beyond marathon distance with durable time on feet, terrain practice, fueling, logistics, and restraint.
Ask Murph to help
In an ultramarathon, terrain, elevation, weather, darkness, aid stations, mandatory gear, walking, fueling, foot care, and cutoff times can decide the result as much as running speed. Build durable time on feet, rehearse the real demands, and protect your health over a long preparation.
Most first-time ultra runners should bring a stable marathon-level base, or equivalent trail endurance, into a specific block. Pick the event before building the plan; a flat 50K and a mountainous 100K are different goals.
What to do
- Read the official course, elevation profile, cutoffs, aid, gear rules, and withdrawal procedures.
- Keep most running easy and hike deliberately on steep terrain.
- Progress long outings and event-specific elevation, not both dramatically at once.
- Practice fueling, fluids, foot care, layers, lighting, and pack setup repeatedly.
- Use back-to-back long days only when the event calls for them and you can recover.
- Strengthen calves, quads, hips, trunk, and downhill tolerance.
- Plan recovery weeks and keep energy intake adequate as training grows.
A simple plan
Build a 12- to 20-week event-specific block on top of your existing base. A representative week has several easy runs, one terrain- or hill-focused session, one longer outing, and strength work.
Increase time on feet in small steps and cut it back every third or fourth week. The peak should resemble the course in terrain, climbing, pack, and fueling more than in full race distance. A first 50K runner might peak with a marathon-length or several-hour trail outing; longer distances need individual planning.
On long sessions, rehearse an intake schedule with foods and products you can get and tolerate at low intensity. Practice fixing hot spots, chafing, layers, and lights before they become reasons to stop.
Taper for at least one to three weeks depending on event length and accumulated fatigue. On race day, start below the effort that feels exciting, hike early when the course warrants it, and treat fueling and problem-solving as part of the performance.
How to know it is working
Long terrain-specific sessions should become more predictable: steady energy, fewer equipment surprises, manageable soreness, and normal function after proper recovery. You should know what pace keeps you inside cutoffs and roughly what your fueling looks like hour by hour.
Fitness numbers alone can't prove readiness; the best evidence combines durable training, practiced logistics, course knowledge, and an honest read on recent health.
If you get stuck
If volume keeps producing injury or exhaustion, stop adding miles and improve consistency, hiking skill, strength, or specificity instead. If your stomach fails late, reduce intensity and rehearse different intake in training. If sleep, mood, menstrual function, libido, or performance declines, investigate energy availability and recovery.
If the event profile exceeds your experience (high altitude, extreme heat or cold, remote terrain, overnight duration), use an experienced coach and the organizer's medical guidance.
