Ultramarathon

Any race longer than a marathon (26.2 miles). Common distances include 50K, 100K, and 100 miles.

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Understanding Ultramarathon

An ultramarathon is any race longer than the standard 26.2-mile marathon distance. Common distances include 50K (31 miles), 50 miles, 100K (62 miles), and 100 miles, though timed events (run as far as you can in 6/12/24 hours) are also popular.

Ultras shift the challenge from speed to resilience. Pace matters less; nutrition, gear management, sleep deprivation (in longer events), and mental fortitude become dominant factors. Many ultra runners walk significant portions of the course, especially uphills, and the sport attracts a different personality than road racing — patience and stubbornness outweigh pure athletic talent.

The ultra community is known for its camaraderie and accessibility. Most ultras are trail races with stunning scenery, well-stocked aid stations, and a supportive atmosphere. Cutoff times are generous enough that walkers can finish. The sport has grown exponentially, with events like Western States 100 and UTMB becoming bucket-list races with lottery entries.

Key Facts: Ultramarathon

Key facts and insights about ultramarathon that every endurance athlete should know.

The 100-mile distance is considered the

The 100-mile distance is considered the classic ultra challenge

Western States 100

Western States 100 (est. 1974) is the oldest 100-mile trail race

Courtney Dauwalter holds the women's 100

Courtney Dauwalter holds the women's 100-mile record at under 13 hours

Walking uphills is standard strategy eve

Walking uphills is standard strategy even for elite ultra runners

Pro Tips: Ultramarathon

Walk before you need to — power hiking uphills from the start saves energy for the long haul

Train your stomach: practice eating real food (sandwiches, potatoes, broth) during long runs

Build your weekly mileage gradually over 6–12 months before attempting your first ultra

Crew and pacer support makes a massive difference in 50-mile+ races — recruit help early

Frequently Asked Questions About Ultramarathon

Not necessarily, but it's recommended. A marathon shows you can handle the training volume and race-day logistics. Many runners jump from the marathon to a 50K, which is only 5 miles longer and often on easier-paced trail terrain.

Constant grazing. You need 200–300 calories per hour from a mix of gels, real food (PB&J, potatoes, broth, fruit), and liquid calories. Aid stations in ultras are like buffets. What sounds good changes throughout the race — savory foods become more appealing as the miles add up.