The Ultraboost is a maximalist road running shoe family utilising Boost, COLD.RDY and Continental WinterGrip tech from adidas.
The Ultraboost 21 uses breathable construction, orthotic friendly and removable insole design, and was released in 2021. Its support type is designated as neutral, meaning that it's designed for runners with neutral pronation. The latest model in the family is the adidas Ultraboost 22.
With an average review score of 74%, it's in the lowest rated 20% of similar running shoes. Based on our monitoring of prices across the internet, it's currently just above the median price of running shoes today.
![]() Now viewing adidas Ultraboost 21 | ||||||
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bestDeal | Show prices | |||||
priceBand | Price band | |||||
similarity | Similarity | Very similar | Very similar | |||
released | ReleasedJan 2021 | Sep 2019 | Feb 2018 | Feb 2018 | ||
expertReviewScore | Expert Review Score | | | | | |
productAthletes | Pro athlete users | |||||
Weight | WeightM: 340 g W: 312 g | M: 312 g W: 278 g | 303 g | M: 238 g W: 196 g | M: 238 g W: 198 g | |
Forefoot | Forefoot21 mm | M: 21 mm W: 20 mm | 12 mm | 18 mm | 13 mm | |
Heel to toe drop | Heel to toe drop10 mm | 12 mm | 10 mm | 10 mm | 8 mm | |
Heel | Heel31 mm | M: 33 mm W: 32 mm | 22 mm | 28 mm | 21 mm | |
Usages | UsagesDaily running | Daily running | Daily running | Daily running | Daily runningSpeed training | Daily running |
Brand | Brandadidas | adidas | PUMA | adidas | Nike | Nike |
Strike Type | Strike TypeHeel strike | Heel strike | Heel strike | Heel strike | Heel strike | Fore/Midfoot strikeHeel strike |
Shoe Type | Shoe TypeMaximalist | Maximalist | Maximalist | Lightweight | Lightweight | |
Orthotic friendly | Orthotic friendly | |||||
Removable insole | Removable insole | |||||
Techs | Techsadidas Ultraboost | 4Dadidas 4D | adidas Ultraboost | Nike FlyknitNike React | ||
Environmental Characteristics | Environmental Characteristics | Sustainable | ||||
Common characteristicsRoadNeutralNeutral pronationHigh archBreathable |
Characteristics | |
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Sports | Running (+1860) |
Terrain | Road (+1264) |
Usages | Daily running (+1081) |
Brand | adidas (+274) |
Support Type | Neutral (+1458) |
Pronation Type | Neutral pronation (+1435) |
Strike Type | Heel strike (+1101) |
Arch Type | High arch (+1383) |
Shoe Type | Maximalist (+441) |
Fit | Medium toe box (+788) |
Features | Breathable (+958)Orthotic friendly (+218)Removable insole (+123) |
Materials | Knit (+188) |
Techs | adidas Ultraboost (+38) |
Specifications | vs Average | |
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Model | 21 | |
Released | Jan 2021 | |
Measurements | ||
Weight | M: 340 g W: 312 g | |
Heel to toe drop | 10 mm | |
Heel | 31 mm | |
Forefoot | 21 mm |