Best Sunglasses for Trail Running

Trail running breaks sunglasses in ways hiking does not. Every footfall is a small impact, sweat rate is far higher, and the light changes constantly between canopy and open trail. The problems worth solving are bounce, slip, and fog, in that order.

1. 1

   Solve bounce before anything else

   Sunglasses that shift on every stride are a constant distraction and eventually come off. Bounce is controlled by retention rather than weight — a heavier pair held firmly bounces less than a light pair held loosely. Cord retention or a cinched retainer solves this outright.

   Retainers explainedCinched versus loose retention

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2. 2

   Expect sweat to defeat friction grips

   Silicone temple and nose grips work well until you are genuinely sweating, which on a trail run is within the first mile. Look for hydrophilic rubber compounds that become grippier when wet rather than more slippery — that distinction is the difference between glasses that stay put and glasses you keep pushing back up.

3. 3

   Choose a vented frame for fog

   Running generates a lot of warm moist air around the face, and a sealed wraparound frame traps it against the lens. Brow vents and a slight gap at the top of the lens clear fog far better, and this matters more at slow uphill efforts than at speed.

   Fogging fixesVentilation and field technique

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4. 4

   Pick a tint for dappled light, not for bright sun

   Trail running moves between deep canopy and open sections constantly, and a very dark lens makes roots and rocks harder to see in shade. A category 2 lens or a photochromic that shifts with the light suits trail running better than the category 3 tint that suits open terrain.

   Photochromic lensesWhether adaptive tint suits your running

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5. 5

   Accept that you will damage them

   Branches, falls, and being stuffed into a vest pocket all take a toll. This is a strong argument against a $300 pair, and a strong argument for either a cheap pair you replace or a hingeless design with fewer things to break.

Trail Running Picks