ULA Equipment ULA Circuit Backpack vs Gregory Baltoro 75 Backpack

Editorial Team
Last modified at May 17, 2026
When it comes to choosing the right backpack for your outdoor adventures, the ULA Circuit and Gregory Baltoro 75 are two top contenders. Both packs are designed for multi-day trips and offer a blend of comfort, durability, and organization. However, they cater to slightly different needs and preferences. The ULA Circuit is known for its stability and weight distribution, making it ideal for rough terrain. On the other hand, the Gregory Baltoro 75 excels in comfort and organization, making it a great choice for those who prioritize ease of access and a personalized fit.

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ULA Equipment ULA Circuit BackpackGregory Baltoro 75 Backpack
ULA Circuit Backpack
Gregory Baltoro 75 Backpack
Capacity

4,200 cu in

4,577 cu in

Weight

38.5 oz; 2.41 lb

5.34 lb

Material

ULA 400 Robic, UltraStretch™ Mesh

210D 40% Recycled Nylon Ripstop with C0 DWR, 420D 40% Recycled Nylon with C0 DWR, 40% Post-consumer Recycled 135D Polyester with C0 DWR, Lifespan EVA Foam & AirCushion Mesh

Frame Type

Carbon/Delrin hoop; aluminum stay

FreeFloat A3 Pro suspension

Volume

4,200 cu in

4,577 cu in

Warranty

Lifetime

Limited Lifetime

Hip Belt Size

X-Small: 26–30 in
Small: 30–34 in
Medium: 34–38 in
Large: 38–42 in
X-Large: 42–47 in
XX-Large: 47+ in

30 - 52 in

Number Of Pockets

6

9

Load Lifters

Yes

N/A

Compression Straps

Side Compression Straps

Yes

Sternum Strap

Yes

Yes

Hydration Sleeve

Hydration port

Yes

Rain Cover

Sold separately

N/A

Comfort

ULA Circuit Backpack

4.4/ 5.0

Gregory Baltoro 75 Backpack

4.9/ 5.0

Comfort is crucial for backpacking packs, as it directly impacts your enjoyment and endurance on long treks. A comfortable pack distributes weight evenly, reducing strain on your back and shoulders. The Gregory Baltoro 75 excels in this category with its highly praised back panel and lumbar support, offering a customizable and comfortable fit that moves with your body. Buyers consistently mention its excellent padding and support between the hips and shoulders, making it incredibly comfortable even on steep terrains. The ULA Circuit, while also comfortable with its fully padded back panel and four-point contact hip belt system, falls slightly short compared to the Baltoro 75. The Circuit's comfort is notable, but the Baltoro 75's superior padding and adjustable features make it the clear winner in this category.

Durability

ULA Circuit Backpack

4.3/ 5.0

Gregory Baltoro 75 Backpack

4.6/ 5.0

Durability ensures your pack can withstand the rigors of the trail and last for many adventures. The Gregory Baltoro 75 edges out the ULA Circuit with its robust materials, including 100% nylon and various denier strengths that reinforce the pack in high-stress areas. Buyers praise its excellent quality and fit, noting that it is built tough and can carry heavy loads. The ULA Circuit is also highly durable, with water-resistant and tear-resistant laminated materials, but it has a few complaints about broken frames and material gashes. While both packs are built to last, the Baltoro 75's consistent positive feedback on durability gives it the advantage.

Stability

ULA Circuit Backpack

4.7/ 5.0

Gregory Baltoro 75 Backpack

4.7/ 5.0

Stability is essential for maintaining balance and comfort, especially when carrying heavy loads over uneven terrain. Both the ULA Circuit and Gregory Baltoro 75 excel in this category, with buyers praising their ability to keep the pack balanced and stable. The Circuit features a removable delrin hoop and metal frame stake, which help distribute weight effectively. Similarly, the Baltoro 75 boasts aluminum stays and a frame sheet that enhance stability and rigidity. With both packs receiving high marks for stability, it's a tie in this category.

Ventilation

ULA Circuit Backpack

3.6/ 5.0

Gregory Baltoro 75 Backpack

3.3/ 5.0

Ventilation helps keep you cool and dry, which is particularly important in hot weather or during intense physical activity. The ULA Circuit has a slight edge in this category with its mesh pockets that help with airflow and drying. While the Gregory Baltoro 75 also features recesses to promote airflow and a back panel cutout, it has mixed reviews regarding breathability, with some buyers noting that their backs can still get wet. The Circuit's ventilation, though not perfect, is slightly better overall.

Adjustability

ULA Circuit Backpack

4.4/ 5.0

Gregory Baltoro 75 Backpack

4.8/ 5.0

Adjustability allows you to customize the fit of your pack, which is crucial for comfort and load management. The Gregory Baltoro 75 stands out in this category with its highly adjustable shoulder straps, fully adjustable sternum strap, and adjustable waist belt. Buyers appreciate the ability to fine-tune the fit to their body, making it more comfortable for long treks. The ULA Circuit also offers adjustability with removable and height-adjustable hip belts and adjustable shoulder straps, but it doesn't match the Baltoro 75's level of customization. The Baltoro 75's superior adjustability makes it the winner in this category.

Organization

ULA Circuit Backpack

4.6/ 5.0

Gregory Baltoro 75 Backpack

4.9/ 5.0

Organization is key for keeping your gear accessible and well-arranged, which can save time and reduce frustration on the trail. The Gregory Baltoro 75 excels in this category with its nine external pockets, two lid pockets, and various compartments that make it easy to access your gear. Buyers praise its numerous storage options and organizational features, making it a standout for those who value easy access to their belongings. The ULA Circuit also offers good organization with large hip belt pockets and a dorsal pocket, but it doesn't match the Baltoro 75's extensive storage options. The Baltoro 75's superior organization makes it the clear winner in this category.

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Conclusion & Final Verdict:

After comparing the ULA Circuit and Gregory Baltoro 75 backpacks, it's clear that both have their strengths. The Gregory Baltoro 75 is the better choice for those who prioritize comfort, organization, and adjustability. It offers superior padding, numerous pockets, and a highly customizable fit, making it ideal for long treks where ease of access and comfort are crucial.

On the other hand, the ULA Circuit is lighter and offers better stability and ventilation. It's a great option for those who need a durable and stable pack for rough terrain and want to minimize weight. Ultimately, the best choice depends on your specific needs and preferences.

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