Testing Norda's New 055 All-Mountain Trail Running Shoe

The 005 was a rocket. Light, fast, brutally durable. It also had a heel collar that folded like a lawn chair the moment you loaded up on a steep descent. Plenty of runners loved it anyway. Plenty more sent it back. That's the reality of gear that almost gets it right — almost kills you.

Norda listened. The 055 keeps everything that made the 005 a classic — bio-circular Dyneema upper, Vibram Megagrip Elite outsole, Arnitel TPEE midsole — and bolts on what the 005 was missing. Stack jumps to 39 millimeters in the heel, 33 up front, compared to the 005's 28.5 and 21.5. The heel collar is structured and padded now. There's an integrated knit tongue and collar pulling double duty as a debris-blocking gaiter.

What actually matters when you're logging real volume

If you're grinding through 50, 80, 100-mile weeks in prep for an ultra, cushion isn't a luxury. It's a load-management tool. More stack means more time between foot strike and ground reaction force reaching your joints. That buys you miles. It also means more shoe to torque on technical terrain, which is exactly why midsole compound matters as much as height.

Arnitel is the wildcard. It's not your typical EVA mush. High energy return, stable under load, doesn't pack out the way cheaper foams do after a couple hundred miles of hauling yourself up and down mountains. That's the kind of longevity that matters when you're logging serious backcountry volume, not your weekly park-loop jog.

The proof point isn't marketing. It's Rachel Entrekin running 250 miles at Cocodona — Black Canyon City to Flagstaff — in 56 hours, 9 minutes, 48 seconds, setting the course record, in a pair of 055s. That's not a sponsored photo op. That's a body absorbing 250 miles of Arizona punishment and finishing fast.

What to watch before you pull the trigger

The gaiter-style upper is the make-or-break feature. Field Mag's tester says Norda hit the right balance — blocks debris, doesn't torture your ankle. Believe in the Run's crew echoed it. That's the kind of detail you can't judge until you're 40 miles into a rocky descent and a pebble the size of a marble decides to move in between your sock and your arch.

Co-founder Nick Martire has compared the 005 to a Lamborghini. Same engine here, more displacement. If you've been skipping ultras because your feet couldn't handle the distance, or you're nursing cranky joints through training blocks, this deserves a hard look. If you're already dialed into the 005 and your heels aren't a problem, the upgrade is real but not mandatory.

The 055 isn't a reinvention. It's a correction. For a brand that built its name refusing to cut corners, that's exactly what the long-distance crowd needed. Now stop reading gear reviews and go put in the miles.