Step 02 — The lineup
6 shoes scored across eleven metrics · Any purpose
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On Cloudmonster Void — On Cloudmonster Void: 30 mm heel stack, 6 mm drop, 289 g — specs from independent lab testing.
Sizing note
Cloudboom Strike, Streakfly 2 run snug — go up half a size, especially for long runs.
Durability
Plated models here average ~220 mi; non-plated land closer to ~330 mi.
Step 03 — Every metric
| Metric | On Cloudflash | Adidas Adizero RC 5 | Saucony Freedom 4 | On Cloudboom Strike(2024) | Saucony Kinvara 16 | Nike Streakfly 2(2025) | Brooks Hyperion 2(2024) |
|---|---|---|---|---|---|---|---|
| Weight | 210 g / 7.4 oz | 210 g / 7.4 oz | 227 g / 8.0 oz | 194 g / 6.8 oz | 207 g / 7.3 oz | 176 g / 6.2 oz | 204 g / 7.2 oz |
| Drop | 6 mm | 8 mm | 4 mm | 4 mm | 4 mm | 6 mm | 8 mm |
| Stack (heel) | 28 mm | 28 mm | 28 mm | 39 mm | 29 mm | 32 mm | 30 mm |
| Cushioning | |||||||
| Flexibility | |||||||
| Stability | |||||||
| Rocker geometry | |||||||
| Energy return | |||||||
| Responsiveness | |||||||
| Toe-box | Narrow | Standard | Standard | Narrow | Standard | Narrow | Narrow |
| Plate | — | — | — | Carbon | — | Nylon | — |
| Intended pace | 5:45–7:45 /mi | 6:15–8:30 /mi | 7:30–10:00 /mi | 5:00–7:15 /mi | 6:30–8:30 /mi | 5:15–7:00 /mi | 6:15–8:15 /mi |
| Purpose | Race day, Tempo | Tempo, Race day | Daily, Long run | Race day | Tempo, Daily | Race day, Tempo | Tempo, Race day |
| Sizing | Size up ½ | True to size | True to size | Size up ½ | True to size | Size up ½ | True to size |
| Durability | ~250 mi | ~300 mi | ~400 mi | ~220 mi | ~400 mi | ~250 mi | ~300 mi |
| Price | $180 | $90 | $180 | $290 | $140 | $170 | $140 |
Your reference shoe is shown first for context. Cushioning, flexibility and stability are rated 1–5.