The Chance Running arrow mark, in orange, showing the route forward to ethically made, high performance ultra running kit.
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Running Shorts & Tights

Best-in-class fabrics, built for runners’ comfort, and featuring our renowned BounceLess storage system. Whether you’re running a marathon, laps of the track, or going long at an Ultra, our highly technical shorts and tights, including our critically-acclaimed Ultra Short v.3, are built to be as comfortable at KM100 as KM1. 

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Three Shorts, Three Purposes

The Ultra Short is our most popular product, and the one that started it all. A compressive half-tight with our proprietary BounceLess storage system, the Ultra Short is purpose-built for ultra running and long-distance trail running. It carries your phone, nutrition, flask, and mandatory kit in a skin-tight waistband that eliminates bounce — no vest or belt required. Now in its third generation, the Ultra Short v.3 features upgraded Italian fabrics, tighter mesh pockets, and tabs for easy access in challenging conditions. Available for both men and women.

The Marathon Short is our training and racing short for road running and medium-to-long distances. With a 5-inch outer shell, brief liner, and a slimmed-down version of the BounceLess storage system, it's the go-to choice for runners who want storage without the compression of the Ultra Short. Ideal for marathon training, tempo sessions, and race day.

The Sprint Short is pure speed. At 75g, it's a minimalist split short with a 3-inch outer shell, high side splits for maximum stride length, and zero storage — just performance. Designed for track sessions, fast 5Ks, and those days when you want to travel as light as possible. Unisex fit.

Built for Every Distance

Whether you're racing a 5K, logging training miles, or carrying mandatory kit through an ultra, the right running shorts make the difference between comfort and compromise. Chance's AROW range of running shorts is designed, tested, and manufactured in Portugal from class-leading fabrics — including a fully woven 4-way stretch shell from French manufacturer Payen — to deliver performance that lasts.

Storage That Doesn't Bounce

Most running shorts force a trade-off: pockets that bounce, or no pockets at all. Our BounceLess storage system removes that compromise. Integrated into the waistband of the Ultra Short and Marathon Short, it holds your essentials — phone, gels, keys, flask — tight to your body, distributing weight evenly so nothing moves. It's been tested and proven at UTMB, The Speed Project, and hundreds of ultras around the world.

Ethically Made Running Shorts

Every pair of Chance running shorts is cut, sewn, and finished at Petratex in Portugal — one of the most advanced sports apparel manufacturers in the world. Our fabrics come from Payen in France and leading Italian mills. Each purchase offsets 200kg+ of carbon, plants two trees, and removes 1kg of ocean-bound plastic.