Although the 5K is still king in terms of road race participation, the past few years have seen a surge in popularity for ultra-running (races longer than a marathon). But pounding out 35, 50 or even 100 miles on the pavement just isn't feasible for many runners, and that's why so many ultras are held on scenic trailways. "With ultra-running being so popular, we've definitely seen a corresponding increase in the popularity of trail running," Peter Maksimow, ATRA's Outreach and Partnership Specialist, says.
Trail running is also becoming very popular among master runners. "People are starting to figure out trails are not as hard on the body as the pavement is," Hane says, who is in her mid-40s and completed the Superior Sawtooth 100-mile trail race last fall. In fact, many of the runners over 40 we interviewed have sworn off road running entirely because their bodies just feel better running off-road.
One reason may be the high variability of the terrain. Where treadmill or track running creates near identical strike force patterns over thousands of strides, running on a sidewalk or paved path can be even worse: the cant of the roadway or path (created for necessary rainwater flow into gutters or ditches) can have you running crooked, with one leg higher than the other, for miles and miles. This isn't the case on the trail, where elevation and surface type can change a dozen times in just a few hundred yards.
"You have to be okay with slowing your pace down," Hane says, "But I love the challenge of the terrain. My husband likes the wide, well-maintained trails, but those are too runable for me. I like the technical stuff, the single track. It forces you to be more mindful."