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ALTRA Women's Experience Form Road Running Shoe, Gray, 9 vs Under Armour Women's Charged Assert 9, Black/White, 8.5 US

Updated August 2026 — ALTRA Women's Experience Form Road Running Shoe, Gray, 9 wins on support and comfort, Under Armour Women's Charged Assert 9, Black/White, 8.5 US wins on weight and breathability.

The ALTRA Women's Experience Form offers superior performance and stability, while the Under Armour Women's Charged Assert 9 excels in comfort and affordability.

Why ALTRA Women's Experience Form Road Running Shoe, Gray, 9 is better

Performance

ALTRA focuses on responsive running experience.

Stability

GuideRail technology enhances support for overpronators.

Design

Sleek design emphasizes lightweight performance.

Why Under Armour Women's Charged Assert 9, Black/White, 8.5 US is better

Price

Under Armour is significantly cheaper.

Comfort

Plush step-in feel with no break-in needed.

Versatility

Classic black and white design for casual wear.

Overall score

ALTRA Women's Experience Form Road Running Shoe, Gray, 9
85
Under Armour Women's Charged Assert 9, Black/White, 8.5 US
75

Specifications

SpecALTRA Women's Experience Form Road Running Shoe, Gray, 9Under Armour Women's Charged Assert 9, Black/White, 8.5 US
Upper MaterialMeshMesh
MidsoleEVA FoamCharged Foam
OutsoleRubberRubber
FitTrue to SizeTrue to Size
Ideal ForSerious RunnersCasual Runners

Dimension comparison

ALTRA Women's Experience Form Road Running Shoe, Gray, 9Under Armour Women's Charged Assert 9, Black/White, 8.5 US

Price Comparison

The ALTRA Women's Experience Form Road Running Shoe is priced at $89.99, while the Under Armour Women's Charged Assert 9 retails for $57.95, making the Under Armour shoe about 36% cheaper. This significant price difference may influence budget-conscious buyers who seek reliable running shoes without breaking the bank. The ALTRA model has a sales rank of 25,604, indicating a higher price point may correspond with a larger audience, but the Under Armour's impressive rank of 2,002 suggests it is a popular choice among runners, possibly due to its affordability and features.

Design and Aesthetic

In terms of design, the ALTRA shoe features a sleek gray color palette, while the Under Armour shoe showcases a classic black and white combination. The ALTRA’s design emphasizes a lightweight and effortless performance, appealing to those who prioritize minimalism. In contrast, the Under Armour shoe's breathable mesh upper not only enhances airflow but also ensures comfort during warm-weather activities. This design is particularly beneficial for newer runners who may struggle with overheating. The aesthetics of both pairs cater to different tastes, but the Under Armour shoe might appeal to those seeking a more versatile look for casual wear.

Comfort and Fit

When it comes to comfort, the Under Armour Women's Charged Assert 9 excels with its plush step-in feel. It features foam padding around the ankle and a molded liner for an easy, comfortable fit right out of the box, which is especially advantageous for those who dislike break-in periods. On the other hand, the ALTRA Women's Experience Form focuses on an efficient ride with its compression-molded EVA foam midsole that provides responsiveness. While both shoes aim to deliver comfort, the Under Armour's features suggest it may be better suited for casual wear and daily runs, while the ALTRA caters to more serious runners seeking performance.

Support and Stability

Support is a crucial factor when selecting running shoes. The ALTRA shoe incorporates GuideRail technology, which provides gentle guidance for overpronators, enhancing stability during runs. This feature is particularly valuable for runners who require additional support to maintain proper foot placement. In contrast, the Under Armour shoe boasts reinforced overlays that improve midfoot support, ensuring that your foot stays centered during light training or longer walks. While both shoes provide adequate support, the ALTRA model may be more beneficial for those with specific stability needs.

Cushioning and Responsiveness

Cushioning is a vital aspect of running shoes, affecting overall comfort and performance. The ALTRA Women's Experience Form utilizes a rocker shape designed for efficient toe-off and natural propulsion, encouraging a more responsive running experience. Conversely, the Under Armour shoe features a Charged midsole that delivers balanced impact protection, providing a softer ride for smooth steps, particularly appealing to newer runners. The ALTRA may cater more towards performance-driven runners looking for a responsive experience, while the Under Armour could be more suitable for those prioritizing comfort during everyday use.

Traction and Durability

When it comes to traction, the Under Armour Women's Charged Assert 9 features a rubber outsole with a flexible tread pattern, enhancing grip and natural flexibility on various surfaces. This added traction is vital for runners who may encounter different terrains. The ALTRA shoe, while not explicitly detailing its outsole's traction capabilities, is designed with lightweight materials and a responsive feel that promotes efficiency. However, without specific traction features mentioned, the Under Armour may have the upper hand for those concerned about stability on slippery or uneven surfaces.

Brand Reputation

Both ALTRA and Under Armour are reputable brands in the running shoe market. ALTRA is known for its focus on innovative technologies that enhance running performance, which is reflected in the Experience Form's unique design features. Under Armour, on the other hand, has established a reputation for creating high-quality athletic gear at various price points, making it accessible to a broader audience. The Under Armour Women's Charged Assert 9’s higher bestseller rank suggests that it resonates well with consumers, potentially indicating a strong brand loyalty and satisfaction among its users.

Which should you buy?

Ultimately, the choice between the ALTRA Women's Experience Form Road Running Shoe and the Under Armour Women's Charged Assert 9 comes down to your specific needs and preferences. If you prioritize performance and stability, the ALTRA may be the better option, especially for serious runners who require additional support. However, if budget and comfort are your main concerns, the Under Armour shoe, with its lower price point and plush cushioning, is likely the more appealing choice. Each shoe has its unique strengths, making them suitable for different types of runners.