Is Ultra marathon harder than marathon? “Just because the average pace is much slower than something like a road marathon, doesn’t mean it’s easy running. Not only are most ultras more challenging in terms of terrain and climbing/descending, maintaining any pace is difficult when you’ve been at it for eight hours, no matter what the surface.”
How many kms is an ultra? The most common distances are 50 kilometres (31.07 mi), 100 kilometres (62.14 mi), 50 miles (80.47 km), and 100 miles (160.93 km), although many races have other distances.
What’s the longest ultra marathon?
What is the hardest distance to run? The 800m wins many runners’ award for most difficult race. Mark Fernando, a University of Houston middle-distance runner, says the quandary for many 800m runners is in the intensity of the final curve and the homestretch.