I Ran 31 Miles in Smart Glasses. Here's What Actually Works

A runner tested Engo smartglasses in a 31-mile ultramarathon and a shorter run, finding them comfortable, accurate, and easy to glance at for pace and distance.

The glasses were especially useful for quick race stats without breaking stride, making them practical for endurance athletes.

Their limited app and feature set make them better for training and shorter efforts than for very long races.

The review suggests smartglasses may catch on first in focused fitness use cases where athletes already spend on performance gear.