"Men's Topo Athletic® MTN Racer 4: The MTN Racer 4 from Topo Athletic® is a men's trail running shoe built for runners who want to move fast on technical terrain. Whether you're racing a mountain course or pushing the pace on a demanding trail, this shoe is designed to keep up. Topo Athletic® is known for building footwear with a roomy toe box that lets your foot splay naturally, and the MTN Racer 4 carries that philosophy into a performance-focused trail package.Topo Athletic® recommends sizing up a half size in the MTN Racer 4, so keep that in mind when you're ordering. That fit guidance reflects the brand's commitment to giving your foot room to move without sacrificing security on the trail. If you've been looking for a trail shoe that balances a natural fit with the kind of performance you need on race day or fast training runs, the MTN Racer 4 is worth a close look.Why Our Fit Experts Love This Shoe""I always point customers toward Topo when they want a trail shoe that doesn't squeeze the front of their foot. The MTN Racer 4 has that same roomy toe box feel, but it still feels connected and controlled when you're moving fast on uneven ground. Just remember to size up a half - it makes a real difference in how the shoe fits on longer efforts."" - Michael, Road Runner Sports Fit Expert, Seattle WAWho It's Best ForIf you're a trail runner who wants a fast, natural-fitting shoe for mountain races or hard training runs, the MTN Racer 4 is a strong option. It's a good match for runners who prefer a wider toe box and don't want their foot cramped during longer or more intense efforts on the trail. The half-size-up fit recommendation makes it especially worth trying if you've struggled to find trail footwear that feels right at the front of the foot. VIP Family members can take the MTN Racer 4 for a 90-Day test drive with our Perfect Fit Guarantee."