Adidas

Adizero Adios 9

$152.40Speed Trainer

The Adidas Adios 9 is a super lightweight, low-stack racing flat that modernizes a traditional, ground-connected feel with responsive Lightstrike Pro foam, designed for experienced runners seeking agility and proprioception. It delivers excellent comfort, durable outsole grip, and an energetic ride, making it ideal for 5K-10K races, speed workouts, and tempo runs, with some finding it suitable for up to half marathon distances. However, its narrow forefoot, minimal stack height (potentially too soft or punishing for longer runs for some), and flimsy laces are common criticisms, alongside its limited availability in the US market.

Highlights

Ultra-lightweight construction
Exceptional ground feel and proprioception from low stack height
Secure, comfortable upper with padded Achilles collar and reliable lockdown
Responsive, soft-yet-agile Lightstrike Pro foam ride
Durable, highly grippy outsole with full coverage and reinforced toe

Considerations

Minimal cushioning and low stack height may cause discomfort or jarring on longer runs or fatigued legs
Narrow forefoot and midsole platform may not accommodate wider feet
Low-quality, flimsy laces that may fray or fail to hold knots securely
Very short tongue that provides minimal coverage for double knots
Niche design optimized for shorter distances and speed work rather than high-mileage daily training