The Adidas Adizero Prime X3 Strung is a road running shoe and the On Cloudmonster 3 is a neutral road running shoe. The Adizero Prime X3 Strung is 0.3 oz lighter (10.1 oz vs 10.4 oz), costs about $22 less (from $168) and is rated higher by buyers (4.7 vs 4 out of 5).
Specs side by side
| Spec | Adizero Prime X3 Strung | Cloudmonster 3 |
|---|---|---|
| Price | $168 | $190 |
| Rating | 4.7 / 5 (302 reviews) | 4 / 5 (30 reviews) |
| Weight | 10.1 oz | 10.4 oz |
| Heel-to-toe drop | 6 mm | 6 mm |
| Heel stack height | 49 mm | — |
| Cushioning | — | Balanced |
| Support | — | Neutral |
| Surface | Road | Road |
| Available for | Men & Women | Men & Women |
Specs and prices from Adidas and On, checked 2026-10-11. Weight is usually for a men's size 9–10.
Which should you get?
Get the Adizero Prime X3 Strung if…
- you want the lighter shoe
- you want to spend less
- you want the more widely reviewed shoe
Get the Cloudmonster 3 if…
- it fits you better or you like its colors
More comparisons
- Adidas Adizero Prime X3 Strung vs Brooks Hyperion Max 4
- Adidas Adizero Prime X3 Strung vs Hoka Gaviota 6
- Adidas Adizero Prime X3 Strung vs On Cloudrise Cyclon 1.1
- Adidas Adizero Prime X3 Strung vs On Cloudrise Cyclon
- Adidas Adizero Prime X3 Strung vs Brooks Defyance Max
- On Cloudmonster 3 vs On Cloudmonster 2
- On Cloudmonster 3 vs Nike Vomero 18
- On Cloudmonster 3 vs Nike Vomero Plus
- On Cloudmonster 3 vs Hoka Bondi 9
- On Cloudmonster 3 vs ASICS GEL-NIMBUS 28