Posted in Run

The running short appears to be a fairly simple garment, but if you're looking for the best shorts for your run, be it a 5k or marathon, then this guide will help you find the ideal pair.

Designed to provide you with the maximum freedom to move, running shorts come with a variety of styles to suit distinct types of runners and running.

So, whether you gobble up the track, ravage local roads, or thump through the toughest trails, there’s a short suited perfectly to your needs.

There are many elements differentiating the various styles of shorts. These include length, whether they have lining or a compression layer underneath, what materials are used, and the type of fit.

Your running and training type will dictate the style of short best suited to your needs, giving you the best chance to perform at your best.

Why do some runners wear short shorts, while others opt for longer, above the knee types? Well, there are pretty good reasons for both. There are no hard and fast rules but different short lengths lend themselves to different purposes. Have a look at some of the scenarios befitting the scale of short lengths. running shorts, runner

Short length (three-inch)

Shorts that finish high up the thigh provide the best ventilation and range of movement when you run, which is why they are favoured by competitive runners in general. They’re ideal for both sprinting and long-distance road running (such as a marathon) as their technical construction, lightweight and non-restrictive cut makes them the ideal choice for all-out performance.

Medium length (five-inch)

Providing a balance between the aggressive competitiveness of the short-short and the robustness of the long, medium-length shorts give you the best of both worlds. The most popular style among runners, the medium short is a versatile garment for the modern runner and ideal for those who vary their training from track to trail.

Long length (seven-inch)

For shorter running distances a longer short is often preferred. These shorts are also perfect for changeable conditions, as well as running off-road, offering you protection against debris or shrubs. It’s important, however, to ensure the material used will not retain heat or moisture and disrupt your comfort. Look for sweat-wicking fabrics and ventilation to ensure they don’t hamper your performance. This style of short is also more likely to have pockets for quick and easy storage. 

Running shorts explainer

While the various lengths provide a basic idea of the type of shorts you need for your running discipline, there are a number of other features to look out for. There can be, however, some confusion about the purpose of these features, so here’s a look at some of the frequent questions asked…

Where are running shorts measured from?

The measurement used for running shorts is the inner seam; that is the distance between the bottom of the short’s leg and the seam at the base of the crotch. For those of around average height, a three-inch short will finish on your upper thigh, a 5" short should approach the mid-thigh area, and a 7" short will finish just above the knee. 

What are split running shorts?

Split running shorts take the advantages of short-length shorts a step further, and are the garment of choice for serious runners taking part in a competitive race or seeking to break a PB. They provide super-lightweight comfort and complete freedom of movement.

Shop split running shorts at Wiggle 

Why do running shorts have a lining in the inside?

If you’re new to running, it may surprise you to learn you’re not supposed to wear underwear under your running shorts. An inner lining is instead provided to keep you secure and comfortable, and wearing another layer of underwear underneath can cause chafing and discomfort. The shorts and the lining are designed to keep you ventilated and fresh over long distances, where the build-up of sweat and constant motion could cause a nasty rub. An increasingly common alternative to using a lining inside the shorts is to incorporate compression materials under the shorts.

Why do runners wear compression shorts?

As mentioned above, compression shorts can be incorporated into traditional shorts to act as a replacement for the inner lining. These are known as 2-in-1 shorts. Compression can contribute to better blood flow, muscle activation, and general comfort.

Do compression shorts help prevent chafing?

With less moving parts, as it were, compression wear can greatly reduce chafing. With rubbing fabrics eliminated, you can run further and in more comfort than ever before. Be sure not to wear underwear under compression fabrics or these benefits can be quickly undone.

Shorts type for trail, track, or road

Here are some examples of various shorts at differing lengths and for different disciplines to help you find the right style for you. Of course, the shorts below are categorised only to illustrate their likely use, so choose whatever type of short makes you most comfortable no matter your preferred terrain or running style. 

Shorts for the trail runner

Trail and urban runners tend to wear tougher gear and can afford to wear slightly heavier kit. 2-in-1 shorts provide extra protection from the elements and comfortable support even on the longest of routes. 

Salomon Agile 5" Shortadidas Running Shorts

Cut in a slim fit and designed for full freedom of movement, the Terrex Trail 5" Running Shorts from adidas are crafted in part from recycled materials and feature an elastic drawcord waist and zip pockets. 



OMM Women's Pace ShortOMM Shorts

The OMM Pace Short is highly functional and features two mesh pockets big enough for trail essentials like gels, windshorts, compasses. Flexible, durable, and soft, these shorts will provide comfortable performance cool comfort on the most challenging mountain runs.



Under Armour SpeedPocket Trail ShortUnder Armour Shorts

Lightweight, comfortable and durable, the Speedpocket Trail Shorts from Under Armour deliver maximum freedom of movement while the stretchy fast-wicking fabric keeps you dry and the expandable pocket keeps your phone secure.



Shorts for the track runner

The track runner is generally looking for super-light shorts that provide freedom of movement for aggressive sprints or the long strides of distance running. 

dhb Women's 3" Run Shortdhb Running Shorts

​The dhb Women's 3" Running short has been patterned to give a non-restrictive fit and maximum freedom of movement. Ideal for tempo runs, races and bigger workouts incorporating bigger strides, lunges or squats.



On Race Shorts 3"On Running Shorts

Lightweight and breathable the Race Shorts from On Running feature a supportive inner brief, elasticated waistband and zoned perforation to keep you cool, dry and comfortable. Crafted with side slits for a full range of movement on race day.



New Balance Impact Run 3 Inch Split ShortNew Balance Shorts

Lightweight and comfortable, the New Balance Impact Run 3-Inch Short is ideal for getting out on a run or taking on a rigorous gym workout. Made in a breathable, moisture-wicking design with an adjustable elastic waistband and easy-access pockets.



Shorts for the road runner

The road runner needs a versatile garment that is as happy in the sun as it is in the rain, and these shorts deliver on both counts. 

Asics Road 5inch 2 in 1 ShortAsics Shorts

Lightweight, durable and functional, the Asics Road 5 in 1 Short Short is equally at home in the gym or out on the road. There's a secure pocket for valuables and 360 reflective elements add visibility for those early-morning or evening runs. 



Ronhill Women's Tech Marathon Twin Running ShortsRonhill Shorts

Take on the great outdoors with the Ronhill Women's Tech Marathon Twin Running Shorts. The lightweight outer layer and supportive inner keep you cool, dry and comfortable even as your workout heats up.




dhb Aeron Run 5" Liner Shortdhb Shorts

The perfect short for your everyday training. Constructed from a premium high-wicking fabric with a mesh liner to reduce chafing, they'll keep you comfortable for most of the year. 





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About the author

Damien Whinnery's picture
Damien Whinnery
Published on: 11 Mar 2021

Fascinated by fitness, serious about sport, and joyous about the gym