That rhythmic thigh slap from a loose phone in an insecure pocket can derail a perfectly timed marathon pace. For runners logging serious miles, the difference between a personal record and a frustrating shuffle often comes down to shorts that don’t chafe, bounce, or sag under the weight of a mid-run gel and a smartphone.
I’m Mohammad — the founder and writer behind ProteinJug. I spend my time cutting through marketing fluff to analyze the specific fabric weaves, pocket geometries, and compression technologies that separate a pair of throwaway gym trunks from legitimate distance-ready gear.
Below, I break down the seven models that actually hold up to high-mileage training and race-day demands, so you can confidently pick the right pair from a crowded field of options. This is the definitive guide to finding the best marathon shorts for men.
How To Choose The Best Marathon Shorts For Men
Selecting the right pair for marathon training involves understanding the critical intersections of fabric, fit, and function. Here are the key decision points that will directly impact your comfort and performance.
Pocket Security and Phone Placement
A standard floppy slash pocket will turn your phone into a pendulum that slaps your thigh with every stride, causing distraction and potential chafing. Look for a dedicated internal compression pocket on the right side or a zippered security pocket that holds your device tight against your leg. Shallow zippered pockets that barely clear a modern smartphone are a common weak point — the pocket opening must be deep enough to slide the phone in without snagging.
Inseam Length and Freedom of Movement
For marathon distances, a 5-inch to 7-inch inseam generally offers the best balance. A 5-inch length provides maximum ventilation and freedom for faster turnover, while a 7-inch length offers more sun coverage and a slightly more conservative cut. Models that ride up or bunch at the glutes will ruin your stride — look for a secure waistband and a cut that matches your body type.
Liner vs Linerless Construction
Built-in mesh liners offer convenience and reduce the need for separate base layers, but they can trap moisture and lead to chafing if the liner fabric is coarse or the short is too loose. Linerless shorts allow you to pair them with your preferred compression shorts or briefs, giving you full control over moisture management and fit. Compression shorts with integrated liners often perform best for high-mileage runners who want a single-piece solution.
Fabric Weight, Breathability, and Drying Speed
Lightweight woven fabrics (80-120 GSM) are ideal for summer racing — they dry quickly and permit airflow. Heavier knits can trap sweat and cling when wet. If you run in humid conditions, prioritize a short with mesh ventilation panels on the sides or a minimal fabric structure. The fastest-drying materials are thin polyester knits with no cotton content, often marketed as “quick-dry” or “thermal” fabrics like Under Armour’s HeatGear.
Quick Comparison
On smaller screens, swipe sideways to see the full table.
| Model | Category | Best For | Key Spec | Amazon |
|---|---|---|---|---|
| Under Armour Launch Run 7″ | Unlined | High-mileage training | Internal phone pocket | Amazon |
| New Balance Impact Run 5″ | Lined | Speed work & races | 5-inch inseam | Amazon |
| Under Armour Heatgear Compression | Compression | Zero-bounce storage | Thigh pocket | Amazon |
| MIER 7″ Workout Running | Linerless | Value & versatility | Zippered pockets | Amazon |
| CRZ YOGA 9″ Linerless | Linerless | Long runs & golf | 9-inch inseam | Amazon |
| New Balance Sport Essentials 7″ | Lined | Budget all-rounder | Built-in liner | Amazon |
| Under Armour Tech Vent 7″ | Linerless | Casual & gym | Vent mesh fabric | Amazon |
In‑Depth Reviews
1. Under Armour Men’s Launch Run 7 Inch Unlined Shorts
This is the short that gets the details right for serious distance work. The 7-inch unlined design means you can layer compression shorts underneath without dealing with a cheap built-in liner that bunches or chafes. The fabric is a lightweight woven polyester that wicks sweat and dries quickly, and the mesh panels on the sides provide genuine ventilation rather than just decorative cutouts.
The internal phone pocket on the right side is the standout feature — it holds a modern phone securely against your thigh with zero bounce, unlike the shallow slash pockets found on many competitors. The soft knit waistband with an internal drawcord ensures the shorts stay put even after hours of running. Feedback from high-mileage runners confirms these survive weekly wash-and-dry cycles without losing shape.
The cut runs slightly small in the waist, so buyers typically size up if they are between sizes. The open hand pockets are adequate for gels or keys, but the real value is in the internal pocket that eliminates phone slap.
Why it’s great
- Superior phone pocket security
- Lightweight woven fabric breathes well
- Made with recycled polyester
Good to know
- Runs slightly small; size up if borderline
- No built-in liner requires separate base layer
2. New Balance Men’s Impact Run 5 Inch Short
For those who prefer a short, aerodynamic cut for speed workouts and race day, the Impact Run 5-inch delivers. The built-in mesh liner simplifies the packing list — you grab one pair and you’re ready to hit the road. The fabric is incredibly lightweight and dries fast, with effective reflective accents that catch headlights during early morning or evening runs.
Runners report that the medium fits well for a 6-foot frame with a 32-inch waist, and the secure inner pouch provides basic phone storage. The cut feels aerodynamic and stays in place during hard efforts. However, the side pockets are not designed to hold a large phone securely — they work for keys or cards, but the pass-through pocket lacks the tension needed for a phone or water bottle.
The waist runs slightly large, so those with a 38-inch waist may need to size down to avoid the drawstring being hard to tighten. The liner is comfortable and doesn’t chafe, making this a solid choice for runners who want a minimal, no-fuss racing short.
Why it’s great
- Very lightweight and aerodynamic
- Effective reflective accents for visibility
- Comfortable built-in mesh liner
Good to know
- Side pockets too small for modern phones
- Waist runs large; consider sizing down
3. Under Armour Men’s Armour Heatgear Compression Shorts
If your number one priority is eliminating phone bounce entirely, the Heatgear Compression shorts are the answer. The compression fit locks down your gear — reviewers consistently report that an iPhone 16 Pro Max sits securely in the thigh pocket with zero movement during runs, even at high mileage. This is a critical advantage over loose-fit shorts where phones turn into pendulums.
The fabric is a blend of polyester and elastane that provides graduated compression to support muscle recovery during long training blocks. The breathability is excellent, and the moisture-wicking HeatGear material prevents the clammy feeling that cheaper compression fabrics produce. Many runners report wearing these as a base layer under looser shorts, offering the best of both worlds: storage security and airflow.
Durability is a strong suit — multiple buyers report two years of heavy use (40-50 miles per week) before any signs of wear. The main consideration is the compression fit itself: if you are not accustomed to tight gear, you may want to size up. The mid-rise cut stays in place during squats and strides without rolling down.
Why it’s great
- Rock-solid phone pocket with no bounce
- High durability for high-mileage runners
- Excellent moisture management
Good to know
- Compression fit may feel too tight for some
- Not meant to be worn alone by modest runners
4. MIER Men’s Workout Running Shorts 7 Inch
MIER has carved out a reputation for delivering functional shorts at a price point that undercuts the big brands without skimping on the features runners actually need. The 7-inch linerless design comes with deep zippered pockets on both sides, providing secure storage that most budget shorts simply don’t offer. The fabric is a lightweight woven polyester that dries fast and resists water absorption during sweaty sessions.
The fit is true to size with a mid-rise waist that sits comfortably above the hips. The drawstring is easy to cinch and stays tied during activity. Reviewers consistently praise these for being just as good for lounging as they are for gym work or short runs. However, the zippered pocket opening sits very close to the regular slash pocket, which can sometimes catch your hand when reaching in quickly.
These shorts do not have a built-in liner, so you will need to pair them with compression shorts or briefs for running. The lack of an internal phone pocket means your phone will sit in the zippered side pocket, which is secure but introduces a slight weight shift that some runners notice on longer distances.
Why it’s great
- Two deep zippered pockets for security
- Lightweight and quick-drying fabric
- Great price-to-feature ratio
Good to know
- Zippered pocket can snag on hand
- No built-in liner or internal phone pocket
5. CRZ YOGA Men’s Linerless Workout Shorts 9 Inch
For runners who prefer a longer silhouette that provides more sun coverage and a more conservative fit, the CRZ YOGA 9-inch linerless shorts are a strong contender. The material is soft, breathable, and remarkably lightweight — almost like wearing nothing at all. The fabric dries quickly after a sweaty run or a dunk in the washing machine.
The zippered pocket on the side provides secure storage for keys or a card, but the real draw is the overall comfort and fit. Reviewers note that the dark gray color is versatile enough for both running and casual wear, and the elastic waistband with drawstring ensures a locked-in feel. These shorts are popular among golfers as well, indicating that the freedom of movement extends beyond running.
The main limitation for marathon use is the pocket volume — while the zippered side pocket is secure, it is not designed for a large phone. The 9-inch inseam may feel restrictive to runners accustomed to 5-inch or 7-inch shorts, especially during high knee drive or on hot days when ventilation becomes critical.
Why it’s great
- Ultra-soft and breathable fabric
- 9-inch length offers great coverage
- Dries fast and washes well
Good to know
- Zippered phone pocket is small
- Linerless design requires a base layer
6. New Balance Men’s Sport Essentials Short 7″
The New Balance Sport Essentials short is the classic “grab-and-go” option for runners who want a simple, lined short at an accessible price. The 7-inch inseam sits right at the knee for most builds, and the built-in mesh liner provides adequate support for moderate distances. The fabric is a standard polyester blend that feels comfortable against the skin and holds up well to repeated washings.
Reviewers report consistent sizing and good durability over several years of use. The shorts work equally well for running, gym sessions, or lounging around the house. The fit is true to size for most body types, though some find the built-in liner less comfortable than a separate compression short — one reviewer noted his son preferred to remove the liner entirely.
The limitations become apparent at marathon distances: the pockets are basic slash-style without zippers or internal phone compartments, meaning your phone will bounce unless you carry it in a belt or armband. The fabric is not as lightweight or breathable as dedicated running shorts, making it less suitable for hot-weather long runs. The lack of reflective detailing is a safety miss for early morning or evening miles.
Why it’s great
- Good value for a lined short
- Versatile for gym and casual wear
- Consistent sizing and durable stitching
Good to know
- Basic slash pockets lead to phone bounce
- Fabric feels heavier than dedicated runners
7. Under Armour 7″ Tech Vent Shorts
The Tech Vent is Under Armour’s lifestyle-meets-activewear short, designed for versatility rather than dedicated marathon performance. The fabric is lightweight and breathable, with a textured knit that feels comfortable against the skin and dries reasonably fast. The 7-inch inseam creates a clean look that works for kickboxing, watching kids’ games, or working from home as easily as it works for a casual jog.
The fit is consistent with Under Armour’s standard sizing, and the elastic waistband with drawstring provides a secure hold. Reviewers appreciate the durability — weekly wear for a year with no signs of piling or fading. The shorts wash well and maintain their shape after multiple cycles.
The major drawback for marathon runners is the pocket design: the open hand pockets are loose and lack zippers or internal phone compartments. One reviewer specifically noted that the pockets are “too loose” and items can fall out during dynamic movement. Without a zipper or liner, this short is not suitable for holding a phone during a run. The linerless construction also means you need a separate base layer for running.
Why it’s great
- Comfortable and durable fabric
- Clean aesthetic works for many activities
- Washes well without losing shape
Good to know
- Pockets are loose and lack zippers
- Not designed for serious running storage
FAQ
Should I buy lined or linerless marathon shorts?
How do I prevent my phone from bouncing in running shorts?
What inseam length is best for marathon training?
Final Thoughts: The Verdict
For most users, the marathon shorts for men winner is the Under Armour Launch Run 7″ Unlined because of its superior internal phone pocket, lightweight construction, and recycled fabric. If you want a zero-bounce solution with compression, grab the Under Armour Heatgear Compression. And for a budget-friendly entry point without sacrificing pocket security, nothing beats the MIER 7″ Workout Running Short.







