Stay cool with these shorts. I recommend shorts made of wicking fabric to dry quickly and keep you cooler. Bike-style shorts with lycra can help prevent chafing. If you use arm motion, it is best to select shorts without side pockets so you won't catch your thumbs.

Courtesy of PricegrabberI've been wearing these as my performance shorts for a few years. The fabric is quick-drying and ultralight. They have a 3 1/2-inch inseam and a notch on each leg to allow free leg motion. Sizes small to XL.

Courtesy of PricegrabberI really like the look and design of these shorts. They have a beefier waistband than most sports shorts, with contrasting lacing. The back zip pocket is very useful for small essentials, and you won't risk hooking your thumbs on side pockets when you are using good arm motion while walking. It has a liner so you can choose to wear additional undies or not.

Courtesy of PricegrabberWant to feel a little more feminine while still having the benefits of wicking fabric and compression shorts? This skort has a skirt over compression shorts, with slits in front for easy motion. And all the benefits of just having one waistband instead of two.
I love Bornfit's wide waistband. These shorts are a great fast walking length. They have an interior pocket suitable for a media player or small essentials. The legs have a relaxed fit for comfort without too much flare. They come in XS - XXL.
Features 89% Supplex® nylon 11% Lycra® spandex. These performance shorts have a CoolMax® gusset and come in a variety of inseam lengths.
Split shorts with a separate liner give you classic fit with great freedom of movement at any speed. Made from nylon tricot, extremely lightweight.
Low-rise construction for a comfortable fit. 100% polyester taffeta microfiber with contrast mesh and self-fabric side panels, contrast self-fabric binding along hem and side seams. Side panel notch design allows for good range of motion. Elastic waistband with internal drawcord, built-in Dri-FIT® crepe liner, internal card/key pocket, embroidered Swoosh design trademark at lower left leg. 3” inseam.
Featherweight, moisture-wicking, and rapid drying shorts with a CoolMax® shell fabric has a sanded silk hand. CoolMax® crepe liners are durable and non-clinging. 3.5" inseam - a longer length for better coverage.
Insport has a great variety of running shorts that are silky and have superior moisture transfer, breathability and quick-drying performance.