The Adidas Ultraboost 5X is a road running shoe and the Nike Pegasus 42 is a neutral road running shoe. The Ultraboost 5X is 0.9 oz lighter (9.7 oz vs 10.6 oz) and costs about $19 less (from $90). The Pegasus 42 is rated higher by buyers (4.8 vs 4.6 out of 5).
Specs side by side
| Spec | Ultraboost 5X | Pegasus 42 |
|---|---|---|
| Price | $90–$99 | $108.97–$145 |
| Rating | 4.6 / 5 (2,104 reviews) | 4.8 / 5 (265 reviews) |
| Weight | 9.7 oz | 10.6 oz |
| Heel-to-toe drop | 10 mm | 10 mm |
| Heel stack height | 39 mm | — |
| Cushioning | — | Firm / responsive |
| Support | — | Neutral |
| Surface | Road | Road |
| Available for | Men & Women | Men & Women |
Specs and prices from Adidas and Nike, checked 2026-10-11. Weight is usually for a men's size 9–10.
Which should you get?
Get the Ultraboost 5X if…
- you want the lighter shoe
- you want to spend less
Get the Pegasus 42 if…
- it fits you better or you like its colors
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