Step 02 — The lineup
6 shoes scored across eleven metrics · Any purpose
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Altra FWD VIA 2 — Altra FWD VIA 2: 37 mm heel stack, 4 mm drop, 272 g — specs from independent lab testing.
Sizing note
Rivera 4 run snug — go up half a size, especially for long runs.
Durability
Expect roughly 375 miles before the midsole flattens out.
Step 03 — Every metric
| Metric | Altra Experience Flow 2 | Altra Experience Flow 3 | New Balance Fresh Foam X Tempo v2 | Altra Experience Flow | Altra Rivera 4 | Topo Athletic Cyclone 2(2024) | Saucony Kinvara 16 |
|---|---|---|---|---|---|---|---|
| Weight | 235 g / 8.3 oz | 241 g / 8.5 oz | 244 g / 8.6 oz | 235 g / 8.3 oz | 235 g / 8.3 oz | 204 g / 7.2 oz | 207 g / 7.3 oz |
| Drop | 4 mm | 4 mm | 6 mm | 4 mm | 0 mm | 5 mm | 4 mm |
| Stack (heel) | 30 mm | 32 mm | 28 mm | 29 mm | 28 mm | 28 mm | 29 mm |
| Cushioning | |||||||
| Flexibility | |||||||
| Stability | |||||||
| Rocker geometry | |||||||
| Energy return | |||||||
| Responsiveness | |||||||
| Toe-box | Very wide | Very wide | Standard | Wide | Very wide | Very wide | Standard |
| Plate | — | — | Nylon | — | — | — | — |
| Intended pace | 7:30–10:00 /mi | 7:30–10:00 /mi | 6:30–8:30 /mi | 7:00–9:30 /mi | 7:30–10:00 /mi | 6:45–9:15 /mi | 6:30–8:30 /mi |
| Purpose | Daily, Long run | Daily, Long run | Tempo, Daily | Tempo, Daily | Daily, Long run | Tempo, Daily | Tempo, Daily |
| Sizing | Size up ½ | True to size | True to size | True to size | Size up ½ | True to size | True to size |
| Durability | ~400 mi | ~400 mi | ~400 mi | ~350 mi | ~400 mi | ~300 mi | ~400 mi |
| Price | $150 | $150 | $140 | $140 | $120 | $150 | $140 |
Your reference shoe is shown first for context. Cushioning, flexibility and stability are rated 1–5.