A trail running shoe protects you against the percussive forces of sinew on stone, think about the other hazards that face a runner on the trail: slippery ground, uneven surfaces, sharp stones, wet grass, wet brush, streams and puddles. If your vision of a trail is a manicured path of crushed gravel, then you can stop reading here. But if you venture outside of the city park, you’ll want more protection against stone bruising, stability against turned ankles, traction in mud or wet conditions, durability in abrasive terrain, and good moisture management (from sweat, rain, or puddles). Trail running shoes offer that extra performance that makes running off-road more comfortable, more enjoyable, and safer.