How to recognise it
Elastic and a drawstring at the waist, curved side splits, a light quick-drying fabric and often a built-in brief or liner.
Where it comes from
Shorts like these spread in the 1970s with the jogging boom in the US and Europe. The side splits allow a long stride without rubbing.
Who and when it suits
For running, training, the gym and a hot day. In town they go with a T-shirt and sneakers for a relaxed look.
Variations and look-alikes
Running shorts come short or longer, with a liner or brief (2-in-1), with reflective details, with phone pockets, and ultra-light for racing. They differ from dolphin shorts in length and a simpler edge, and from sweat shorts in their light fabric.
How to style it
- Choose a pair with a liner to stop chafing.
- A back pocket for keys.
- Wash without softener.
- With running shoes.
Similar styles
Frequently asked
01Why do running shorts have splits?
The side splits let the legs move freely in a long stride.
02What length of running shorts is best?
Usually an 8–13 cm inseam; longer ones are comfier in the gym.
03How do running shorts differ from dolphin shorts?
Dolphin shorts are shorter, with contrast piping and more rounded sides.
04Can you wear running shorts every day?
Yes, on a hot day with a T-shirt and sneakers.