The decade-old rivalry of functional fitness, and the data says it's still close: 86 vs 85 CoreScore, $118–$130 vs $125–$140. The Metcon 9 is the more lifting-biased tool — a firmer 48 HC midsole (vs 45 HC) and a rock-solid heel that doesn't budge under a barbell, at 328g. The Nano X4 is 18g lighter, marginally softer, and the more comfortable shoe for the running, jumping, and everything-else portion of a workout, with a slightly wider 92mm toebox (vs 90mm).
Nike Metcon 9 | Reebok Nano X4 | |
|---|---|---|
| Price | $118▲ Best | $125 |
| Weight | 328g | 310g▲ Best |
| Heel drop | 4mm | 4mm |
| Heel stack | 20mm | 19mm |
| Midsole feel | 48 HC | 45 HC |
| CoreScore | 86▲ Best | 85 |
| Arch support | neutral | neutral |
| Best for | Weightlifting, HIIT, Rope climbs | CrossFit, Weightlifting, Gym workouts |
| Not ideal for | Running, Long-distance | Running, Outdoor use |
Who should buy which
Choose the Metcon 9 if the barbell is the main event — it's the more stable lifting platform and the firmer base for heavy squats and Olympic work.
Choose the Nano X4 if your training is genuinely mixed — more comfortable for WODs with running and box jumps, friendlier to wider feet, and the shoe you can wear out of the gym without regretting it.
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