About how many miles is a 50K race?
AnswerAbout 31 miles
50 kilometres is about 31.07 miles.
Fitness · Facts & stats
50K facts & stats
7 fact-checked facts about 50K ultramarathons, each with the reason behind it. 5 more are in today's round and join this page after it closes.
The basics
What is an ultramarathon?
AnswerAny footrace longer than a marathon
Any running race longer than the marathon's 42.195 km counts as an ultramarathon.
Going deeper
Which stored carbohydrate in muscles and the liver is a key fuel for long runs?
AnswerGlycogen
Glycogen is the body's stored form of glucose, held mainly in the liver and muscles.
What do endurance runners call sudden severe fatigue when carbohydrate stores run very low?
AnswerHitting the wall
'Hitting the wall' describes the slump when glycogen stores are largely used up.
What is 'tapering' before a big race?
AnswerReducing training load in the final days or weeks
A taper cuts training volume before a race so the body arrives rested.
Expert level
The marathon's 42.195 km distance was based on the course of which Olympic Games?
AnswerLondon 1908
The 1908 London course set 26 miles 385 yards, adopted as the standard distance in 1921.
In trail running, what does 'vert' refer to?
AnswerTotal elevation gain
'Vert' is the total climbing on a route, usually given in metres or feet.
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