Our readers keep the lights on and my morning glass full of iced black tea. As an Amazon Associate, I earn from qualifying purchases.7 Best Running Shorts For Marathon | Stop Chafing At Mile 18

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The FlipBelt Compression Shorts were designed specifically for the logistical nightmare of a marathon: carrying gels, a phone, keys, and even a small flask without a waist belt or vest. The integrated waistband storage is the star here — four to five gels sit flush against the fabric, accessible mid-stride without breaking rhythm. The compression fit hits above the knee, providing enough support to reduce quad vibration on downhills while the moisture-wicking material prevents the clammy feel that sets in after two hours of sustained sweat.

Runners who tested these on long runs noted that the waist pockets hold a 500ml flask securely, though deeper side pockets would make larger bottles easier to access. The internal drawstring on the liner version can cause mild stomach pressure if overtightened, and the front phone pouch may irritate some runners during high-cadence miles. The OG (liner-free) version is considered superior by some for its softer feel against the skin.

At the premium end of the market, these shorts deliver exactly what a marathoner needs: storage that doesn’t bounce, fabric that doesn’t chafe, and a fit that stays locked in place for the full 26.2. If you’re carrying your own fuel and want to ditch the running belt, this is the pair to beat.

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The Brooks Dash Speed Short is built for one thing: moving fast with zero distraction. The 3-inch inseam with side-split hem gives your quads maximum freedom, and the brief liner provides targeted support without the bulk of a compression short. The fabric is genuinely ultralight — it dries almost instantly after a water station splash — and the sweat-wicking properties keep you dry even when the humidity spikes mid-race. Runners who tested it noted the clean stitching and durable construction for a garment this light.

The trade-off is coverage. At 3 inches, these are very short — taller runners reported that they resemble underpants below the hip. The built-in design has no pockets, which is fine for racing if you’re relying on a belt or vest, but impractical for training runs where you need to carry your phone. The drawstring is basic and the waistband is minimal, relying on the liner for security rather than a thick elastic band.

If your goal is to shave seconds and stay cool, the Dash Speed delivers. It’s a specialist tool for race day, not an all-day training companion. For the marathoner who prioritizes ventilation and freedom of movement above all else, this is the short that disappears when the gun goes off.

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Under Armour’s Launch Run Shorts aim to solve the ventilation problem with super-breathable mesh side panels and a 7-inch inseam that offers solid coverage without feeling heavy. The 100% polyester woven fabric is lightweight and durable, and the main body uses at least 90% recycled polyester — a meaningful sustainability angle for eco-conscious runners. The soft knit waistband with internal drawcord provides a secure fit that stays put even during aggressive stride changes.

Being unlined, these shorts require careful underwear selection to avoid chafing. Several testers noted the waistband felt snug for a 38-inch waist, and the seams under the waistband and along the mesh side panels add unnecessary friction points. The open hand pockets work well for daily training, and the right-side internal phone pocket is a welcome addition, though it doesn’t offer the security of a zipper. The navy color also runs lighter than expected.

These are a strong mid-range option for runners who prefer unlined shorts and prioritize breathability. The recycled fabric and mesh panels make them ideal for hot-weather training, but the lack of a liner and minimal storage mean they’re better suited to shorter marathon training runs than the full 26.2 without a belt.

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MudGear built the Freestyle Shorts for obstacle course racing, which means they’re engineered to survive mud, barbed wire, and repeated washing without falling apart. The 7-inch inseam and built-in liner provide solid coverage and support, and the zippered back pocket is large enough for a modern smartphone. The fabric is lightweight and fast-drying — critical for trail runs where you’ll hit water crossings or sweat through multiple climbs. Runners who used them for Spartan Races and Tough Mudders reported no rips, stains, or structural failures.

However, the built-in liner is divisive. Several users described it as a “panty” liner that feels restrictive and causes bunching, and some cut it out entirely. The drawstring is also notably long, and pocket size varies between colorways — the black version has a smaller back pocket than the grey. Front pockets sit close to the legs, reducing bounce, but the overall fit may feel baggy to runners accustomed to compression tights.

For marathoners who split their training between road and trail, the MudGear Freestyle offers durability and a secure zipper pocket at a reasonable price point. The liner issue means you should try them on before committing, but for off-road races and rugged training, they hold up better than most.

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CRZ YOGA has carved out a reputation as a budget-friendly alternative to premium brands like Lululemon, and their 2-in-1 running shorts deliver on that promise. The 7-inch inseam houses a compression liner that eliminates the need for separate underwear, and the quick-dry moisture-wicking fabric holds up well after dozens of wash-and-dry cycles. The zippered pocket securely stores a phone and keys, and the flat seams reduce chafing risk — a crucial detail for marathon training where every raw spot is amplified over distance.

Testers noted the liner runs slightly large and can bunch during squats or high-knee drills, and the color selection is limited compared to bigger brands. The waistband drawstring can be tied either inside or outside the waistband, giving some customization, but the lack of a back pocket is a missed opportunity. For runners between 5’10” and 6’4” with thicker thighs, the 5-inch version may fit better than the 7-inch.

At an entry-level price point, these shorts offer a surprisingly good build quality and enough storage for a training run. They’re not race-day specialist gear, but for daily marathon training where you need something durable and comfortable, they punch well above their weight.

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The maamgic 2-in-1 shorts have developed a loyal following among runners who want high durability without a high price tag. The compression liner provides solid support without restricting movement, and the stretch fabric moves naturally through the stride. Multiple zip pockets — including one on the thigh — keep essentials secure during high-intensity training. Runners consistently report owning five to eight pairs, citing the consistent quality across colors and the longevity of the seams, drawstring, and zippers.

The main drawback is the liner fit: for runners with slimmer thighs, the liner can feel slightly loose, bunching during dynamic movements like lunges or hill sprints. The 5-inch inseam runs slightly longer than standard, which is a positive for those who want a bit more coverage without going to a 7-inch. The fabric is breathable enough for warm-weather runs but may feel warm on the hottest days when compared to ultra-mesh options.

These shorts are a reliable training companion, especially if you want to stock up on multiple pairs for a rotation. The compression liner and zip pockets make them marathon-ready for carrying a phone and a couple of gels, though serious fuel storage still requires a belt or the FlipBelt approach.

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The HOPLYNN 5 Pack solves the logistics problem of marathon training: you need multiple pairs of shorts for a weekly rotation, and buying five high-end shorts at once is expensive. This five-pack delivers decent 2-in-1 construction with deep front pockets that fit an iPhone 15 Pro with a case, plus a small zippered back pocket for keys or a single gel. The inner liner provides privacy and support, making these usable for gym sessions, casual wear, and running without needing extra underwear.

The compromises are clear compared to premium single-pair shorts. The seams are placed internally and can be felt during high-cadence running, especially on longer miles. The material is thicker than ultralight race shorts, meaning they trap more heat in summer. The fit runs small — a 5’10”, 175lb runner with a 32-inch waist needed a size Large. The look is generic with no branding, which may not appeal to everyone.

For the budget-conscious marathoner who needs a week’s worth of training shorts for the price of one premium pair, the HOPLYNN pack offers undeniable value. They’re not built for race-day speed, but for daily training, long runs, and recovery jogs, they provide a functional foundation without breaking the bank.