Step 02 — The lineup
6 shoes scored across eleven metrics · Any purpose
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Nike ACG Mountain Fly 2 Low — Rugged all-mountain cruiser with React foam and sticky rubber.
Sizing note
Everything here fits true to size. Leave a thumbnail of space at the toe.
Durability
Plated models here average ~250 mi; non-plated land closer to ~430 mi.
Step 03 — Every metric
| Metric | New Balance Supercomp Trail v2 | New Balance FuelCell SuperComp Trail | Salomon S/Lab Ultra 4 | On Cloudsurfer Trail 2 | Puma Velocity Nitro Trail | Salomon Sense Ride 6 | Puma Fast-Trac Nitro 4 |
|---|---|---|---|---|---|---|---|
| Weight | 255 g / 9.0 oz | 249 g / 8.8 oz | 265 g / 9.3 oz | 287 g / 10.1 oz | 255 g / 9.0 oz | 285 g / 10.1 oz | 272 g / 9.6 oz |
| Drop | 8 mm | 10 mm | 8 mm | 8 mm | 8 mm | 8 mm | 8 mm |
| Stack (heel) | 34 mm | 36 mm | 36 mm | 34 mm | 36 mm | 34 mm | 34 mm |
| Cushioning | |||||||
| Flexibility | |||||||
| Stability (5 = most guidance) | |||||||
| Rocker geometry | |||||||
| Energy return | |||||||
| Responsiveness | |||||||
| Toe-box | Standard | Standard | Standard | Standard | Standard | Standard | Standard |
| Plate | — | Carbon | Rock | — | — | Rock | — |
| Intended pace | 8:00–11:00 /mi | 8:00–11:00 /mi | 8:00–11:30 /mi | 9:00–12:00 /mi | 8:30–11:30 /mi | 9:00–12:00 /mi | 8:00–11:00 /mi |
| Purpose | Trail, Race day, Tempo | Trail, Race day, Tempo | Trail, Long run, Tempo | Trail, Daily | Trail, Daily | Trail, Daily | Trail, Tempo |
| Sizing | True to size | True to size | True to size | True to size | True to size | True to size | True to size |
| Durability | ~250 mi | ~250 mi | ~450 mi | ~400 mi | ~450 mi | ~450 mi | ~400 mi |
| Price | $180 | $200 | $200 | $170 | $140 | $140 | $140 |
Your reference shoe is shown first for context. Cushioning, flexibility and stability are rated 1–5, where 5 stability means the most guidance and 1 means fully neutral.