How to Choose the Right Running Shorts (And Find Your Perfect Inseam)
Choosing the right running shorts isn’t just about style, it directly impacts comfort, performance, and even your race-day results. Whether you’re training for a 5K or searching for the best running shorts for marathon, the right combination of fabric, fit, and inseam can make all the difference.
This guide breaks down exactly what to look for, and helps you match the right shorts to your running style, distance, and storage needs.
Why the Right Running Shorts Matter
The wrong shorts can lead to:
- Chafing over long distances
- Overheating due to poor fabric
- Constant adjustment mid-run
- Not enough storage for gels, keys, or your phone
The right pair? You forget you’re even wearing them.
1. Fabric Technology: Stay Dry, Stay Fast
High-performance running shorts should always use synthetic, moisture-wicking fabrics like polyester or nylon blends.
What to look for:
- Quick-dry performance (critical for long runs and marathons)
- Breathability for temperature regulation
- Lightweight construction to reduce drag
- Anti-odor treatment for multi-hour wear
🚫 Avoid cotton—it traps sweat and increases friction, which leads to chafing.
2. Inseam Length: The Most Important Choice
Inseam length affects mobility, comfort, and confidence. Here’s how to choose:
3”–3.5” Shorts: Maximum Speed & Freedom
Best for:
- Racing and speed workouts
- Marathon runners who prioritize airflow
- Runners who want zero restriction
Why choose it:
- Ultra-light and minimal
- Maximum stride freedom
- Often considered the best running shorts for marathon racing
Limitless Men's 3.5" Running Shorts Marathon Training Shorts with Liner
Limitless Men's 2.5" Running Shorts Marathon Race Shorts
Limitless Women's 2.5" Marathon Running Shorts5” Shorts: The All-Around Favorite
Best for
- Daily training
- Gym + running crossover
- Most runners (beginner to advanced)
Why choose it:
- Balanced coverage and mobility
- Versatile across workouts
- Works for both short runs and long runs
Men's PaceLite Shorts W/ Zipper Pockets 5"
Men's 2 in 1 Running Shorts 5"
Women's SprintDry™ Running Shorts W/Brief 4"7”+ Shorts: Coverage & Comfort
Best for:
- Runners concerned about thigh chafing
- Trail running or rugged environments
- Those who prefer more coverage
Why choose it:
- Reduces inner-thigh friction
- Adds protection on trails
- More relaxed, casual feel
Men's PaceLite Linerless Shorts 7"
Men's SprintDry™ 7" 2-in-1 Running Shorts
Men's SprintDry™ Running Shorts W/ 4 Pockets 7"3. Fit & Type: Choose Your Running Style
Standard Running Shorts
- Loose outer shell
- Built-in brief liner
- Maximum airflow
Best for: Speed, racing, hot weather
Men's PaceLite Split Running Shorts W/Brief 3"
Men's PaceLite Running Shorts W/Brief 3"
Women's PaceLite Split Shorts 4"2-in-1 Running Shorts
- Outer shell + compression liner
- More support and reduced chafing
Best for:
- Long-distance runs
- Gym + running hybrid training
- Those wanting extra support
Often considered the best 2-in-1 running shorts for versatility.
Men's 2 in 1 Running Shorts 5"
Men's SprintDry™ 7" 2-in-1 Running Shorts
Women's PaceLite 2-in-1 Shorts 3"Compression Shorts
- Tight, second-skin fit
- Focus on muscle support
Best for:
- Layering or high-intensity training
4. Storage: Pockets That Actually Matter
Storage can make or break your run, especially for long distances.
Must-have pocket features:
- Zippered back pocket for keys/cards
- Side or liner pockets for gels
- Secure phone pocket (bounce-free)
If you’re running long distances, look for:
- Best running shorts with phone pocket
- Marathon running shorts with gel pockets
5. Waistband & Fit Security
A good waistband should:
- Stay in place without digging in
- Include an adjustable drawstring
- Handle the weight of pockets (phone, gels)
For marathon runners, this is critical—loose shorts = constant distraction.
6. Liners: Comfort vs Preference
Built-in Liners
- Brief or compression style
- Reduce need for extra underwear
- Help prevent chafing
Some runners prefer:
- Cutting liners out
- Wearing separate compression gear
7. How to Test Running Shorts Before Buying
Before committing, always test movement:
- Do squats → check stretch and coverage
- Do lunges → ensure no restriction
- Simulate running motion → check for ride-up
- Load pockets → test bounce and stability
Choose Based on How You Run
There’s no single “best” running short—only what’s best for your distance, pace, and comfort preferences.
- Racing a marathon? → Go 3”–3.5” lightweight shorts
- Want versatility? → Choose 5” all-around shorts
- Need support & storage? → Pick 2-in-1 with pockets
- Prefer coverage? → Go 7”+ longer inseam