The updated Altra Lone Peak 4 RSM is ready for any weather you choose to run through. As its name suggests, this member of the Altra All-Weather Series (AWS), is ready for Rain, Snow, and Mud (RSM). The upper is made of eVent®. eVent® is 100% waterproof and offers market leading breathability, delivering maximum comfort and protection in the widest range of conditions. In addition, the Lone Peak 4 RSM features a reinforced toe cap, modernized mountain design on the upper and 4-Point GaiterTrap™ technology. The updated gnarly MaxTrac™, multi-directional outsole features accentuated TrailClaw™ for optimum grip and traction where you need it most.

MAXTRAC™

A perfect combination of grip, traction and durability that will eat up gnarly terrain like a boss.

TRAILCLAW™

This unique tread pattern positions lugs beneath your metatarsals for incredible traction in steep climbs and descents.

4-POINT GAITERTRAP™

Hook-and-loop tab allows strapless gaiter attachment that prevents debris from building up beneath the shoe.

FOOTSHAPE™ TOE BOX

Allows your toes to relax and spread out naturally for more comfort and stability in uphill climbs and downhill descents.

ZERO DROP™ PLATFORM

Places your heel and forefoot the same distance from the ground to encourage proper, low-impact form throughout your trail run.