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Here, nine runner-approved models they stand by, stride after stride.

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Images courtesy of the brand

The 245 model has storage for up to 500 songs, and syncs with streaming apps like Spotify.

She also appreciates the battery life and the fact that it’s stylish enough to wear every day.

Louder, for the people in the backfreaking amazing battery life!

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It even tracks how my body is adjusting to training at high altitude.

She also likes that the Fenix 6 allows her to program interval workouts ahead of time.

One of the most unusual features is the battery itself, though.

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When exposed to sunlight the watch powers up, as it has a solar-charged battery, says Danielson.

This feature eases any anxiety I have about my watch dying while out on any given adventure.

Image may contain Wristwatch and Digital Watch

Image may contain Wristwatch and Digital Watch

Image may contain Wristwatch and Digital Watch

Image may contain Wristwatch

Image may contain Wristwatch and Digital Watch

Image may contain Wristwatch

Image may contain Wristwatch and Digital Watch