Step 02 — The lineup
6 shoes scored across eleven metrics · Any purpose
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Topo Athletic Specter 3 — Tall but lively ZipFoam shoe for tempo days and long runs.
Sizing note
Most of this lineup runs roomy in the forefoot — stay at your usual size.
Durability
Plated models here average ~210 mi; non-plated land closer to ~425 mi.
Step 03 — Every metric
| Metric | Altra Duo | Altra Vanish Carbon 3 | Altra Torin 9(2025) | Altra Experience Form | Altra Experience Flow ST | Altra Torin 8(2024) | Altra Vanish Carbon 2(2024) |
|---|---|---|---|---|---|---|---|
| Weight | 245 g / 8.6 oz | 200 g / 7.1 oz | 270 g / 9.5 oz | 272 g / 9.6 oz | 230 g / 8.1 oz | 287 g / 10.1 oz | 229 g / 8.1 oz |
| Drop | 0 mm | 0 mm | 0 mm | 4 mm | 4 mm | 0 mm | 0 mm |
| Stack (heel) | 31 mm | 36 mm | 32 mm | 30 mm | 32 mm | 30 mm | 36 mm |
| Cushioning | |||||||
| Flexibility | |||||||
| Stability (5 = most guidance) | |||||||
| Rocker geometry | |||||||
| Energy return | |||||||
| Responsiveness | |||||||
| Toe-box | Wide | Wide | Very wide | Wide | Wide | Very wide | Wide |
| Plate | — | Carbon | — | — | — | — | Carbon |
| Intended pace | 6:45–9:00 /mi | 5:15–7:15 /mi | 8:30–11:30 /mi | 8:30–11:30 /mi | 7:30–10:30 /mi | 8:30–12:00 /mi | 5:15–7:30 /mi |
| Purpose | Long run, Race day | Race day | Daily, Long run | Daily, Long run | Daily, Tempo | Daily, Long run | Race day |
| Sizing | True to size | True to size | True to size | True to size | True to size | True to size | True to size |
| Durability | ~300 mi | ~200 mi | ~450 mi | ~450 mi | ~400 mi | ~400 mi | ~220 mi |
| Price | $130 | $260 | $160 | $150 | $145 | $150 | $260 |
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.