Become a Member

Get access to more than 30 brands, premium video, exclusive content, events, mapping, and more.

Already have an account? Sign In

Become a Member

Get access to more than 30 brands, premium video, exclusive content, events, mapping, and more.

Already have an account? Sign In

Brands

Trail Runners

Black Diamond Fuel

The best footwear for scrambling of 2021

Lock Icon

Unlock this article and unwrap savings this holiday season.

Already have an Outside Account? Sign in

Outside+ Logo

Now 30% Off.
$4.99/month $3.49/month*

Get the one subscription to fuel all your adventures.


  • Map your next adventure with our premium GPS apps: Gaia GPS Premium and Trailforks Pro.
  • Read unlimited digital content from 15+ brands, including Outside Magazine, Triathlete, Ski, Trail Runner, and VeloNews.
  • Watch 600+ hours of endurance challenges, cycling and skiing action, and travel documentaries.
  • Learn from the pros with expert-led online courses.
Join Outside+


*Outside memberships are billed annually. You may cancel your membership at anytime, but no refunds will be issued for payments already made. Upon cancellation, you will have access to your membership through the end of your paid year. More Details

For hikes that head into rocky, slabby terrain, think of the Fuel as an underfoot security system. “I was comfortable wearing this shoe on scrambles that bordered on actual rock climbs,” one Northeast guide says, crediting Black Diamond’s sticky, proprietary rubber outsole with impressively bridging the gap between rock traction and trail grip. He reports that a balance of stiffness (primarily under the big toe for edging) and flex (for a natural stride) made the Fuel ideal for missions like the boulder-hopping approach to Mt. Washington’s Huntington Ravine. Lacing that extends close to the toes makes for a precise fit, and kept our tester’s foot in place on steeper descents such as the Trap Dike on Mt. Colden in the Adirondacks. An overlapping tongue (fewer seams pressing into the top of your foot), a breathable upper, and an EVA midsole keep the Fuel comfy and capable for dayhiking duty.

m’s 6-14, w’s 5.5-11

When you buy something using the retail links in our stories, we may earn a small commission. We do not accept money for editorial gear reviews. Read more about our policy.