Salomon X Ultra 4 GTX vs Merrell Moab 3 WP: Which Hiking Boot Should You Buy?

The Salomon X Ultra 4 GTX runs narrow through the midfoot and heel. Owners consistently say the shoe fits snugly, which improves stability on uneven terrain but can be a problem for wide feet. The Advanced Chassis midfoot support adds structure that keeps the foot planted on sidehills (Salomon's brand spec; RunRepeat's lab measurements confirm the narrow midfoot width of 93.6 mm, men's US 9 D medium), a point that Amazon reviewers and RunRepeat commenters both single out as a differentiator.

The Merrell Moab 3 WP is significantly roomier. The wider toe box and generous forefoot are the Moab's defining comfort feature, referenced in the majority of its more than 5,000 Amazon ratings. The Kinetic Fit ADVANCED insole offers moderate arch support, and the plush EVA midsole cushions well on hard-packed trails.

Neither boot wins fit outright. If you have narrow to average feet, the Salomon's secure wrap feels precise and stable. If you have wide feet or prefer a roomier fit, the Merrell is the clear choice, and it also comes in a wide-width version. The X Ultra 4 GTX is also available in a wide width: RunRepeat notes it "is also available in an alternative wide width for trail goers with wider feet."

The Salomon uses a Contagrip outsole with aggressive, chevron-shaped lugs that bite into loose soil, mud, and wet rock. In RunRepeat's testing it earns Day hiking and Backpacking scores of 87 out of 100, with reviewers praising the grip across mixed surfaces. The Advanced Chassis adds torsional rigidity, which improves stability when you carry weight over uneven ground.

The Merrell uses a Vibram TC5+ outsole with multi-directional lugs. RunRepeat scores the Moab 3 GTX (the waterproof sibling, used as the lab-data basis) 90 out of 100 for day hiking and 82 for backpacking, and Amazon reviewers rate the traction well on moderate trails, dirt paths, and gentle grades. On steep, wet, or loose terrain, the Moab's softer platform inspires less confidence than the Salomon's Contagrip.

The gap shows up most on descents. Reviewers describe the Salomon as delivering precise, reliable footing on downgrades, while the Merrell's cushier midsole feels less settled under loose conditions. For hikers who stick to well-graded trails, the Merrell's traction is perfectly adequate. For anyone who regularly hikes rocky, rooty, or steep terrain, the Salomon is the more stable platform.

The Merrell Moab 3 WP has one of the strongest street reputations in hiking footwear, backed by more than 5,000 Amazon ratings at 4.5 stars and years of market presence. The leather-and-mesh upper resists abrasion, the Vibram outsole holds up over many miles, and the most common durability complaint is that the cushioning compresses noticeably after a season of heavy use.

The Salomon X Ultra 4 GTX uses a lighter textile-and-synthetic upper that is less abrasion-resistant than leather. RunRepeat reviewers do not flag durability as a major concern, but the lighter build sits closer to trail hazards like sharp rock and brush. The Contagrip outsole wears well on mixed terrain.

Neither boot is a buy-it-for-life product. Plan on a few seasons of hard use before a replacement, with the Merrell's leather upper and long owner history giving it a modest edge on long-term wear.

Value

The Salomon X Ultra 4 GTX typically lists around $210-250 as of 2026-10-08 , and the Amazon buy-box for the linked listing sat inside that band on the same date; the X Ultra 4 is last-gen, so prices on remaining stock sit unevenly and can spike. The Merrell Moab 3 Mid Waterproof usually runs $135-170 as of 2026-10-08 , with its Amazon buy-box inside the band. The Moab's lower, steadier street price matters for boots most hikers replace every one to three years.

Both boots go on sale periodically, and the Moab especially so. Because the X Ultra 4 is out of production, the Salomon listing's price is volatile and often sits near the top of its current range; check the live price before you buy. The Merrell remains the safer budget play.