10 Best Triathlon Shorts 2025 in the United States

The MY KILOMETRE Mens Triathlon Shorts are designed with performance in mind, making them suitable for long-distance triathlons. The fabric is 78% Regenerated Polyamide and 22% Xtra Life Lycra, offering durability, chlorine resistance, and UPF 50+ protection for outdoor use. The moderate compression aids in muscle support during intensive races. The MK TRI2.0 MULTI DENSITY CHAMOIS pad is specifically tailored for comfort in the aero position during biking and running, which is a significant advantage for triathletes.

The shorts feature ultra-thin and ultra-light elastic leg grippers that provide a secure fit without the discomfort associated with silicone. Additionally, the flat locked stitching enhances comfort by preventing chafing and aligning with the body's contours. Easy access nutrition storage pockets on the sides are perfect for race day, allowing quick access to energy gels or snacks.

However, the shorts are pull-on style, which might not be as convenient for quick changes. Also, they require hand washing, which could be a downside for those preferring machine-washable gear. While the shorts appear lightweight at 5.28 ounces, the imported nature and specific care instructions may be less appealing to some users. Ideal for dedicated triathletes, these shorts offer a combination of comfort, durability, and practical features that enhance performance.

The MY KILOMETRE Triathlon Shorts are designed for athletes seeking performance and comfort in long-distance races. The main fabric is a blend of 78% Regenerated Polyamide and 22% Xtra Life Lycra, which offers moderate compression, chlorine resistance, and UPF 50+ protection. These features make the shorts suitable for both indoor pool swims and outdoor activities.

The inclusion of accessible nutrition storage pockets on the sides of the legs is a thoughtful addition for easy access during bike rides or runs, enhancing convenience for athletes. The MK TRI2.0 MULTI DENSITY CHAMOIS is specifically designed to provide comfort in the aero position, which is crucial for long cycling sessions and transitions to running. This padding aims to maximize performance without compromising comfort.

The ultra-thin and ultra-light elastic leg grippers ensure a snug fit without causing silicone discomfort, adding to the comfort and flexibility of the shorts. Flat locked stitching is used to prevent chaffing and enhance durability, benefiting those who engage in rigorous activities. However, the shorts require hand washing, which might be inconvenient for some users. Additionally, the drawstring closure might not be preferred by everyone, as some might find it less secure compared to other closure types. Despite these minor drawbacks, the MY KILOMETRE Triathlon Shorts are a strong contender for triathletes looking for reliable, comfortable, and performance-oriented gear.

The 361º Swim Jammers are made from a durable blend of polyester and spandex, offering a lightweight, quick-drying, and stretchy fabric that supports muscle compression and freedom of movement during swimming and triathlon activities. Their chlorine-resistant material is designed to maintain shape and color through extended use, making these jammers a reliable choice for frequent swimmers. The adjustable drawstring waistband helps secure fit, and the smooth seam construction reduces drag in water.

These swim jammers do not include padding (chamois), which is often desired in triathlon shorts for added comfort during cycling and running stages. They also lack leg grippers or pockets, features typically useful in triathlon shorts to prevent riding up and store small items. If your primary focus is swimming performance and you prefer a streamlined, compression fit without extra bulk, these jammers are suitable. However, for a multi-stage triathlon short with padding and storage, this product may not meet those needs.