One pair of shorts now does the job of all three. Here is why runners are switching.
"Everything being combined so I don't need to wear a belt for gels and my phone."
RUNNR customer, post purchase survey
TLDR: the Marathon Pro carries what your belt, your armband and your liner shorts carry. Here is how 👇
A running belt is the thing you strap on before you can leave. Wear it loose and it bounces. Wear it tight and it rides up and digs in. The Marathon Pro builds a mesh storage belt into the waistband itself, so gels, keys and AirPods sit at your core and move when you move.
"The fact it has pockets for my gels and phone because when I wear an extra belt it always bounces up and just annoys me at long distances."
See what fits in the belt →
Use the front belt when you want quick reach. Use the pocket inside the liner when you want it locked flat against your leg. No swinging, no slapping, no checking every kilometre that it is still there.
"The built in runners belt and two options for phone carrying."
See the liner pocket →
Gels in a back pocket mean reaching behind you at mile 18. Gels in the front belt mean reaching down. That is the whole difference, and on race day it is a big one.
"The ability to carry everything for the marathon in one solution is great."
See it before your next race →
An armband slides, sweats and turns every run into a run where you notice your arm. With the phone in the liner pocket, both hands are empty and swinging the way they should.
"Cell phone pocket. No need to carry or strap on arm."
Run hands free →
The house key goes in the hidden zip pocket at the back of the waistband. Zipped, out of the way, still there when you get home.
Check if your size is in stock →See the Marathon Pro, today's price and which sizes are left in your colour.
See the Marathon Pro →
Wearing compression shorts under your running shorts means two waistbands, two layers and twice the fabric where you least want it. The anti chafe liner is built in, so the support is there and the extra layer is not.
"The full package, under shorts, wicking material, belt to hold stuff."
See the built in liner →
Count what it takes now: belt on, armband on, liner shorts on, find the keys. That gap between deciding to run and running is where most runs get lost. Now it is shoes, one pair of shorts, and the door.
"Having to not wear anything additional to carry my stuff."
Get out the door faster →
No belt to pull back down. No armband to tighten. No pocket to keep checking. The storage is part of the shorts, so there is nothing separate to manage, and you get to think about the run instead.
"The promise that I don't need a running belt and the shorts don't ride up."
Check if your size is in stock →
Grey, Black, Mint and Cream. The belt sits inside the waistband rather than on top of it, so it reads as a pair of running shorts, not a pair of shorts with a belt strapped on.
See all four colours →
The armband. The belt. The liner shorts you bought to fix the chafing. Most runners own all three, and none of them made running easier. One pair of shorts with all of it built in is the thing you actually reach for.
And if the size is wrong, swap it, no questions asked. That is the No Excuses Guarantee.
Shop the Marathon Pro →Why runners told us they picked the shorts with the built in belt.
"I kept getting served loads of ads on Instagram and they showed me I could easily store my phone and keys in the shorts themselves so no need to buy any belts or jackets."
"The ease of storage and integrated multi sports pants. It really saves time to think how and where to put your small items."
"All in one with 2 in 1 short, belt for fuel and liner pocket for mobile phone."
"The expanded belt storage. It's on the waistband. I didn't want to wear a separate belt."
Unedited answers to RUNNR's post purchase survey, August to October 2026.
See today's price and check your size before your colour sells out.
Shop the Marathon Pro →
