Brand: UltrAspire
Category: Running Hydration Reservoirs
Recommended by Kelsey McGill, Running Coach (Trail, Ultra, Road) — Bend, Oregon
Highlights: comfortable
The Traverse Hydration Pack is designed for endurance athletes seeking a high-performance, race-ready solution with a 20-liter capacity. Its innovative design ensures a secure, bounce-free fit while providing easy access to gear and hydration on the go. 1. 20-liter capacity for ample storage without bulk. 2. Updated MaxO2 adjustable sternum system with dual vertical adjustment for personalized comfort. 3. Large rear stash pocket with compression capability for quick gear access. 4. Externally accessible, insulated reservoir sleeve for hassle-free hydration refills. 5. Symmetrical front pockets with dual bottle pockets featuring compression stitching for secure storage. 6. Two zippered top shoulder pockets for quick-access essentials. 7. Available in five sizes (Extra Small to Extra Large) for a tailored fit. The Traverse Hydration Pack is ideal for long-distance runners, hikers, and outdoor enthusiasts who require reliable hydration and gear storage during their activities. It excels in various environments, from rugged trails to competitive races, making it perfect for athletes of all skill levels. This pack is particularly suited for warm weather and high-intensity scenarios, ensuring that users stay hydrated and organized on their adventures.
Price: $224.95
- Who it's for
- Runners and fastpackers tackling multi-day or 200-mile-plus efforts who need high carry capacity with or without crew access. Notes also mention it works for shorter long days in the mountains.
- What people are saying
- Hosts consistently praise the storage capacity, comfortable weight carry (one carried 11 lbs), accessible front pockets, and hydration system design. Notes are overwhelmingly positive with no criticism recorded.
- Worth noting
- Multiple hosts wore it for 200-mile races (Cocodona 250, Wild Horse 200, Summit 200); one used it for fastpacking. Notes are one-sided — all 10 hosts are enthusiastic, several are UltrAspire athletes or received early prototypes.
Kelsey McGill's review
This is an incredibly compact yet spacious vest that I've been loving. This can be a great option for runners using crew or not using crew.
Recommended by Kelsey McGill, Running Coach (Trail, Ultra, Road)
Frequently asked questions
Who is the Traverse Hydration Pack for?
Runners and fastpackers tackling multi-day or 200-mile-plus efforts who need high carry capacity with or without crew access. Notes also mention it works for shorter long days in the mountains.
What do experts say about the Traverse Hydration Pack?
Hosts consistently praise the storage capacity, comfortable weight carry (one carried 11 lbs), accessible front pockets, and hydration system design. Notes are overwhelmingly positive with no criticism recorded.
What should you know before buying the Traverse Hydration Pack?
Multiple hosts wore it for 200-mile races (Cocodona 250, Wild Horse 200, Summit 200); one used it for fastpacking. Notes are one-sided — all 10 hosts are enthusiastic, several are UltrAspire athletes or received early prototypes.
What does Kelsey McGill say about the Traverse Hydration Pack?
This is an incredibly compact yet spacious vest that I've been loving. This can be a great option for runners using crew or not using crew.
Why does Kelsey McGill recommend UltrAspire?
Kelsey McGill recommends the UltrAspire Traverse Hydration Pack for running hydration reservoirs. This is an incredibly compact yet spacious vest that I've been loving. This can be a great option for runners using crew or not using crew.
Is the Traverse Hydration Pack a good running hydration reservoir?
Yes — Kelsey McGill recommends the Traverse Hydration Pack by UltrAspire as their running hydration reservoirs pick. This is an incredibly compact yet spacious vest that I've been loving. This can be a great option for runners using crew or not using crew.
More from Kelsey McGill's Bigfoot 200
View Kelsey McGill's expert gear recommendations on Rendezvu
What other hosts are saying
10 experts recommend the UltrAspire Traverse Hydration Pack.
The absolute best pack for long trail races or adventures. Holds so much weight very comfortably. The giant pockets up front are so convenient for nutrition etc on the go!
Recommended in Cocodona Gear
Keifer Gilbert, Endurance Enthusiast, Adventurer, Coach, Father, Sober Dude
This pack is an absolute must have for multi day efforts, the storage capacity and design around the hydration system is beyond anything else in the market currently. I wore this at Cocodona and simplified so many things because of the capabilities of the pack.
Recommended in 10 Products I Actually Use
Abigail West, Ultrarunner, Artist, & New Mom
We took an epic fastpacking trip in Norway during my first trimester (great opportunity to slow down and take even MORE snack breaks!). The traverse was still in beta testing and I freaking LOVED it for storing all my gear and even some watercolor supplies!
Recommended in Pregnancy & Postpartum Training Essentials
THE pack of Cocodona in 2026.. 20L of storage, rock solid, check out my review video to see how much water you can carry!
Recommended in Best Vests
My favorite pack. Carried this for all of Cocodona 250 and all three days of Three days of Syllamo as a train up. I cannot say enough positive things about this pack. It's comfortable, accessable, useable, and useful! Easy access to all pockets on the go without being a contortionist. Large dump pockets along the sides with drawstring to keep stuff in. Carries a lot of water comfortably! Love this vest!
Recommended in 15 Products I Actually Use
I love this pack. It is built for 200+ mile distances and has all the specs for it.
Recommended in My 200+ Mile List
Rachel Bambrick, Ultrarunning coach & community leader
Used this in all my training for Wild Horse 200 and for the entirety of the race in 2026! Will be my go-to 200 mile pack from now on!
Recommended in My Tried and True Favorites
Allison Powell, Ultrarunning Coach, Ultrarunning Communnity Leader
I was able to carry 11lbs of gear in this pack! All my food, warm layers, battery banks, and more, with ease!
Recommended in Tahoe-Yosemite FKT
I am an ultraspire athlete and I got this pack as a prototype last year before their official release. I have worn it for the Summit 200, Maah Daah Hey 150, Crazy Mountain 100, and a few longer days in the mountains. This is my favorite pack that ultraspire has debuted. I will be wear it with confidence at any distance above 100 miles
Recommended in 10 Products I Actually Use
