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Women's Back Up Passo Alto™ Straight Leg Pant


https://www.columbia.com/womens-back-up-passo-alto-straight-leg-pant-AL8013.html AL8013
$55.00 $70.00
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Style# 1437911
Uses Trail


Durable and textural twill gives this pant a technical feeling, while wicking properties and built-in sun protection keep you dry, comfortable and protected during aerobic activities in the outdoors.

  • Omni-Wick
  • Omni-Shade UPF 50 sun protection
  • Interior drawcord
  • Gusset detail
  • Zip-closed security pocket
  • Mesh pocket bags
  • Boot lace hook
  • Imported
  • Uses: Trail
  • Style# 1437911

    90% nylon/10% elastane stretch Passo twill
    90% polyester/10% elastane Slick Knit
High-Performance Wicking Fabric
Sun Protection

Technology Videos

Play youtube video about Omni-Wick (tm)
Pulls moisture away from the body so sweat can evaporate quickly.
Play youtube video about Omni-Shade (tm)
Blocks UVA and UVB rays to help prevent sunburn and long-term skin damage.


Women's Back Up Passo Alto™ Straight Leg Pant is rated 4.7 out of 5 by 15.
Rated 4 out of 5 by from Alto Straight Leg Pant I love these pants. They're sleek and functional. An added bonus was the drawstring at the bottom of the pant leg, which is very subtle, but super useful while out in the woods during tick season. They're the most comfortable quick dry pant I've ever purchased. I'd buy these again. (This review was collected as part of a promotion.)
Date published: 2018-05-25
Rated 5 out of 5 by from Great pants Great pants, super comfy. I’m 5’7” and the regular length was good for me. I like how you can pull the draw string in the bottom of pants and also the high waist in the back, very flattering. I ordered a 12 so I could wear layers underneath, im normally a 10. (This review was collected as part of a promotion.)
Date published: 2018-03-08
Rated 5 out of 5 by from Good trail or everyday pants. Really attractive, the high back waistline is so comfortable. Bought size 6 quite tight but still very movable. I usually would buy a size 4 but other reviews said sizing was small. Glad I sized up. Nice pockets.
Date published: 2016-12-25
Rated 5 out of 5 by from My favourite pants Fits great, comfortable, high quality.
Date published: 2016-07-27
Rated 5 out of 5 by from Perfect hiking pants I got these a week or so ago and tried them on the weekend (6k hike). They are light, fit great, and most of all they are stretchy and comfortable! Highly recommend these pants
Date published: 2016-07-25
Rated 5 out of 5 by from Excellent pants, please re-stock I purchased a pair of these pants in Sep last year and has been waiting patiently for Columbia to re-stock since but to no avail. Its the best pair of outdoor pants I ever owned and beats all other brands/models hands down. It fits well, looks flattering on my rather thick thighs and feels so comfy. I would have worn it for all my overseas/outdoor trips but the irony is its stays in my wardrobe for most of the time now as I'm so worried of wearing it out and I wouldn't be able to get a replacement. Please re-stock these pants, Columbia!
Date published: 2013-10-21
Rated 5 out of 5 by from Great Pants I've been looking for a great fitting pant that's got the higher back but isn't baggy and have pockets. These pants fit the bill. I really like the stretch that they have to them. I don't have any problems with the seam across the thigh as another reviewer pointed out. The pockets are also a must have. My only hope is that they are still making these or will bring them back as I bought mine on clearance. Would really like them in fossil too.
Date published: 2013-09-16
Rated 3 out of 5 by from Uncomfortable in lower legs Pant has a weird seam across the legs that rubs and is uncomfortable, and also are snug in the lower leg, while the rest of the pant fits nicely, making them uncomfortable. I don't think I will return them, but they are not my favorite at all. Good quality, material, etc.
Date published: 2012-12-10
Rated 4 out of 5 by from Very comfortable. I like these pants overall but won't purchase the same style again. Biggest complaint - the lower end of the diagonal zipper plackets at the hip create a little pooch out right at the widest part of your hips causing them to look wider than they are!! So not very flattering if you have any extra weight there like many of us do! I buy a size up simply so pants won't be tight through the thighs, though they are then too big at the waist so the "back up" feature in these pants, paired with the drawstring make a pretty good fit for me. I would suggest trying these on before you purchase or risk wanting to send them back if you don't like the look.
Date published: 2012-11-13
Rated 5 out of 5 by from Excellent Purchase! These pants are just what I've been looking for. Fabric is very comfortable & durable: breathable, wicking fabric that's heavier than some wicking fabrics but not too heavy for Northwest summer days. Fit is higher rise which manages to be both stylish & comfortable, especially for curves. Speaking of curves, these pants really show them as they're very form-fitted. Love the front pockets which are full size so I can actually relax my hands in them (which seems to a challenging feature to find in pants these days) - yet sleek & virtually invisible when zipped closed. They're also just the right length - I'm 5'4" but need a 34" length for a good fit. Not sure they're 34" but they fit as if they were! I discovered the P asso Alto shorts before the pants & loved them so took a chance when ordering the pants. Hope they'll become available in more colors - I'm definitely ordering every one!
Date published: 2012-08-20
Rated 5 out of 5 by from Great pants I bought these pants for sun protection and discovered I love them just as ordinary pants. The fit is great - I usually find the back waistband of pants bags out but not these - they fit snugly around the whole waistband. They are a nice fit through the legs and are long enough that the clip on the front easily snaps onto my shoe lacing to hold them down for sun protection. I did buy one size larger than usual because my usual size fit were too tight in the thighs but going one size up made for the perfect fit. I like the fabric and as usual with Columbia Sportswear, the construction is excellent. Nice colours too.
Date published: 2012-08-16
Rated 5 out of 5 by from Love these pants! I was tired of being the only person wearing jeans while hiking with my friends, so I finally caved in and bought some hiking pants. Let me just say, if you hike in denim, you're missing out! These pants have a lot of stretch and are super comfortable. The fabric is pretty thick and feels really durable and strong. I absolutely love these pants and would recommend trying them if you've never owned a pair of true hiking pants. On the Fit- they're a little shorter than I would like, and do run a little snug. This pant does have a very tight fit, but it feels like most active-wear pants I own since it has so much stretch. I didn't have the two sizes to small problem like some people are saying. I'm normally a 2 or a 4 and the 4 fits really well.
Date published: 2012-08-13
Rated 5 out of 5 by from AMAZING Pants! I am a wildlife biologist and am outdoors every day. These pants are wonderful. Not only are they comfy and look good, but they have sun protection! Outdoor pants do not get much better than these. I highly recommend them! :)
Date published: 2012-05-18
Rated 5 out of 5 by from Another Favorite Pair of Pants These pants have a little more room around the butt than my Back Up Heat Pants, but other than that they fit my body type very well. Comfortable fabric and nice cut. I like the zipperd pockets, especially the "leg pocket". It is on the right side, which suits me good since I am right handed. I also like that they are adjustable aound the waist and at the botton of the legs.
Date published: 2012-05-02
Rated 5 out of 5 by from These pants are amazing I feel like I am wearing something that was made especially for my body!! no binding, no tightness, they move with me!! These are ,hands down, the most comfortable pants I own. The only thing is, you might have to take a size larger than you usually do as they are made small.
Date published: 2012-04-03
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Size & Fit Guide

Size Chart

Size & Fit Guide
Women's Body Measurement (Inches)
Size XS
Waist 25.5-26.5 27.5-28.5 29.5-30.5 32-33.5 35.5-37.5
Hips 34.5-35.5 36.5-37.5 38.5-40 41.5-43 45-47
Short Inseam 29.5
Regular Inseam 32
Long Inseam 34.5
Size L
Waist 32-33.5 35.5-37.5
Hips 41.5-43 45-47
Short Inseam 29.5
Regular Inseam 32
Long Inseam 34.5
How to Measure
Womens size chart measurement guide
  • 1. Chest/Bust: Measure at the fullest part of the chest, under the armpits and over the shoulder blades, keeping the tape measure firm and level.
  • 2. Waist: Measure around the natural waistline, allowing the tape measure to sit comfortably.
  • 3. Hips: Measure around the fullest part of your hips.
  • 4. Sleeves: Start at the center back of your neck and measure across the shoulder and down to the wrist. Round up to the next even number.
  • 5. Inseam: Measure from the top of the interior leg to the bottom of the ankle.
Women's Fit Guide
Body contouring fit conforms to movement.
womens performance fit bottom
Body skimming fit with end-use mobility in mind.
womens active fit bottom
Modern Classic / Regular
Universal, easy fit for comfortable range of motion.
womens modern classic fit bottom
Most generous fit for a full spectrum of movement.
womens relaxed fit bottom

How to Measure

Columbia Fit Guide

How to Measure

  • Fold up at dotted line.
  • Place against a wall or other 90 degree surface.

    Place heel against fold/wall on flat level surface.
  • Mark the end of the longest toe with a pen or pencil.
  • Measure both feet and use the larger measurement.
  • Read measurement and compare to size chart.
  • When comparing on the size chart, determine the closest larger measurement and use that number to determine your shoe size for your country’s shoe measurement standard.

Shipping & Returns

Shipping & Returns

Shipping Information

Shipping Method Rate Expected Delivery Time
Ground $6.00 3-7 Business Days
2-Day Air $12.00 2-3 Business Days
Overnight $19.00 1-2 Business Days
Free Standard Shipping

Return Policy

Returns are accepted within 60 days of the purchase date online or in-store. Your apparel must be in original and unworn condition, with tags still attached. Footwear returns must also include the original box.

Still Have Questions

See our Customer Service section for more details. Visit Customer Service

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