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Alpinestars Pathfinder Base Shorts - w/o Chamois - Men's


Item # APN016M

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Item # APN016M

Everywhere's a trail.

When the trail gets steep, fast, and gnarly, the Alpinestars Pathfinder Men's Base Shorts without Chamois keep your legs covered, protected, and feeling fly. In addition to being rugged, the Pathfinder's ripstop polyester fabric is seriously stretchy — so you can pedal like a maniac — and sewn with a multi-panel construction that's designed to improve ergonomics and fit. A stretchy mesh panel in the back further improves mobility and cooling, and the seamless seat won't chap your ass or rip in the middle of a hard ride.

Inside the waist band, a soft mesh panel stays comfortable against your skin while the adjustable waist tabs make it easy to loosen the Pathfinder up in the event you've put down a few too many brats around the campfire last night. The shorts' flat snaps don't dig into your waist when you're bent over the bars, and a zippered thigh pocket lets you stash an energy gel or multitool if you're out for a quick rip and want to leave the pack behind.

Tech Specs

polyester ripstop
2 hand, 1 zippered side
hook-and-loop tabs
rear mesh vents
Recommended Use:
mountain bike
Manufacturer Warranty:
21 days

Size chart


Men's Apparel
Chest 35 - 36in
(88.9 - 91.4cm)
37 - 39in
(94.0 - 99.1cm)
40 - 41in
(101.6 - 104.1cm)
42 - 44in
(106.7 - 111.8cm)
45 - 47in
(114.3 - 119.4cm)
Waist 30 - 31in
(76.2 - 78.7cm)
32 - 33in
(81.3 - 83.8cm)
34 - 35in
(86.4 - 88.9cm)
36 - 38in
(91.4 - 96.5cm)
39 - 41in
(99.1 - 104.1cm)
Hip 40 - 41in
(101.6 - 104.1cm)
42 - 43in
(106.7 - 109.2cm)
44 - 45in
(111.8 - 114.3cm)
46 - 48in
(116.8 - 121.9cm)
49 - 51in
(124.5 - 129.5cm)
Thigh19 - 20in
(48.3 - 50.8cm)
21 - 22in
(53.3 - 55.9cm)
23 - 24in
(58.4 - 61.0cm)
24 - 25in
(61.0 - 63.5cm)
26 - 27in
(66.0 - 68.6cm)
How to Measure:
For best results, take measurements over your underwear.
Measure under your arms, around the fullest part of your chest.
Measure around your natural waistline, keeping the tape a bit loose.
Measure around the fullest part of your body at the top of your legs.
Using pants that fit well, measure the crotch seam to the bottom of the leg.

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Avg. ride time: 2h 22m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.


  • Familiarity: I've used it several times
  • Fit: True to size
  • Size Bought: 34

I really like the fit and material feel to these shorts. They have just the right amount of stretch to them, are lightweight, and the waist cinches work well. All 3 pockets are quite deep and large. You can fit quite a bit of gear inside each. I was kind of hoping for a smaller stash pocket for a car key, but that is just being picky. The shorts sit right at your knee, and a bit more baggy than tight, which I would say would pay well between either an all mountain or XC type short. The size seemed true, which I sized up a bit on and utilized the waist cinches.

The material is lightweight and breathable, but the downside of that is the material can show what you have going on underneath. In my case, a pair of Fox Evolution Pro Bib Liners. In my personal experience, I would recommend these shorts without the liner, as I found it to not be very comfortable. Recommend pairing with another liner or bib liner.