What’s the best t-shirt for running?

One that suits the day’s temperature. In warm weather, choose a t-shirt weighing under 100 g, such as the EIGER or BAUGES. If the weather may change during your run, try a half-zip top like the FARAUT. In winter, switch to a warm long-sleeved top like the ALBAN. Avoid cotton: it stays wet.

What’s the difference between a trail t-shirt and a running t-shirt?

The fabric is the same: lightweight, breathable and quick-drying. A trail t-shirt adds features useful in the mountains: reflective details for running at night, fabric that feels comfortable under a pack, and sometimes a pocket to pack it into. All our trail t-shirts work for road running too.

Which t-shirt should you choose for an ultra-trail?

Choose a lightweight, odour-treated top that you can carry a spare of in your pack. The LE FRENCH MONTAGNARD weighs 95 g and packs into its side pocket. Add a long-sleeved layer for the night. Find all the kit in our long-distance trail and ultra.

Cotton, synthetic or merino for a trail t-shirt?

Cotton holds sweat and leaves you cold when you stop: avoid it. Synthetic fabric wicks moisture and dries fastest. Merino wool takes longer to dry, but regulates temperature and reduces odours: see our merino wool t-shirts.

Trail running t-shirts

Cimalp's trail running t-shirts are crafted with technical fabrics to satisfy the most demanding runners.

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The best Trail running t-shirts for enjoying the mountains

trail t-shirts

Vests

T-shirts merino

Which trail t-shirt should you choose for running in hot weather?

Three kilometres into a climb, a cotton t-shirt is soaked and sticking to your back. In hot weather, choose a t-shirt weighing less than 100 g. The EIGER weighs 80 g in size M. Its finely striped knit lets air through and dries quickly. The 95 g BAUGES is cut for trail running and has reflective details. For women, the BOREON weighs 80 g and LA FRANCAISE 75 g in size S. The 95 g LE FRENCH MONTAGNARD packs into its side pocket. All feature CimaFresh treatment to limit odours on long runs.

Breathable running t-shirt: the VENTURI's two-sided knit

On roads and trails alike, sweat needs to move away from your skin. The VENTURI combines two fibres: polypropylene on the inside, which does not retain water, and polyester on the outside, which wicks away moisture and dries quickly. For running, walking and travelling in the same t-shirt, choose the VENTURI : 140 g in size M, stretchy, with anti-odour treatment. A long-sleeved version is available at 190 g.

Half-zip, long sleeves or vest: control your ventilation

On the climb, your body heats up; on the descent, the wind cools your chest. The 100 g FARAUT has a half-zip neckline: open it on the climb and close it at the summit. The AUTANE has the same neckline in a women's cut and weighs 80 g. In cool weather or at altitude, the long-sleeved BAUGES covers your arms at just 110 g. For short runs in the height of summer, a vest leaves your shoulders free : 75 g for the FAURIO, 60 g for the LACHA.

Compare these key features:

Weight: from 60 g for a vest to 240 g for a warm running top.
Odours: CimaFresh treatment on lightweight styles.
Ventilation: half-zip necklines on the FARAUT and AUTANE.
Visibility: reflective details on the BAUGES, FARAUT and LACHA.

Winter running t-shirts: warm running tops

On a January morning, you spend the first ten minutes running with your hands tucked into your sleeves. The ALBAN (210 g) and ARGENTIERES (240 g, zipped neckline) tops are knitted from SMARTWARM fibres: they retain warmth while remaining stretchy. Their thumb loops keep the sleeves in place under gloves, and a zipped back pocket holds an energy gel or keys. The women's HUEZ weighs 175 g. For an even warmer layer, see our thermal base layers.

Men's or women's trail t-shirt: sizing and care

Choose your usual size, for both men’s and women’s fits. EIGER’s extra-fine knit needs careful washing to last. The styles are grouped by gender in our men's running t-shirts and our women's running t-shirts. Like all Cimalp clothing, they benefit from the lifetime repairs.

To complete your outfit, add trail shorts and a trail jacket, or browse all our trail clothing.

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