Lifespan: Under Armour Charged Assert 9
~560 km~348 mi
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About the shoe
The Under Armour Charged Assert 9 delivers reliable comfort and shock absorption for runners seeking a versatile, budget-friendly shoe. Its robust outsole stands up to frequent use, while the flexible, cushioned ride makes it a solid pick for gym workouts and short runs. However, runners looking for long-distance performance or superior breathability may want to consider alternatives.
The outsole is exceptionally durable, with thick, hard rubber that resists wear. However, lab tests and user feedback consistently report poor durability in the upper and heel padding, which are prone to early wear and tear. Overall durability is mixed: great outsole, weak upper.
Full specs, fit notes, and reviews on the Under Armour Charged Assert 9 wiki page.
Specs
255 g · 10 mm drop
Norma rating
6.5/10
The Under Armour Charged Assert 9 is widely regarded by experts and users as a budget-friendly, comfortable, and durable shoe best suited for general daily training and casual fitness use. Its Charged Cushioning midsole provides adequate shock absorption and comfort for everyday runs and walking, but the shoe lacks the advanced cushioning, responsiveness, and upper durability required for long runs or faster-paced workouts. The outsole is highly durable and offers good traction on roads and gym surfaces, but the upper is prone to premature wear and lacks breathability, limiting its suitability for extended efforts or hot conditions. The shoe is stable and secure for easy and recovery runs, but its weight and basic foam make it less ideal for tempo runs or racing, where lighter and more responsive shoes are preferred. It is not designed for trail running, as it lacks aggressive tread and protection for technical terrain. Expert consensus from RunRepeat, RunningShoesGuru, and user reviews on Amazon and Reddit consistently position the Charged Assert 9 as a solid entry-level or secondary trainer for short to moderate distances, gym use, and walking, but not for serious performance running.
- Cushioned midsole absorbs impact and reduces joint stress, making it comfortable for daily wear and short runs
- Outsole features thick, durable rubber in high-wear zones, providing excellent traction and long-lasting grip on varied surfaces
- Flexible platform and lightweight build support agility and natural foot movement, ideal for gym sessions and cross-training
- Upper mesh lacks durability and is prone to early wear, especially in the toebox and heel areas
- Breathability is limited due to the dense mesh, which can lead to overheating during warm-weather runs
Best for and fit
Daily training
Ideal for Best suited for beginner to intermediate runners or fitness enthusiasts who prioritize comfort, affordability, and versatility for short runs, gym workouts, or all-day wear. Not recommended for high-mileage runners or those seeking advanced breathability and upper durability.
The Charged Assert 9 is designed for runners seeking a balance of flexibility and cushioning. The shoe offers a secure midfoot lockdown due to leather overlays, but the upper mesh is less durable and not highly breathable. The heel and toebox fit are standard, making it suitable for most average-width feet. There are no advanced stability or propulsion features such as a carbon plate or rocker geometry. The shoe is best suited for neutral runners and daily training, not for those needing motion control or maximal cushioning.
Sizing: Generally considered true to size by most users and retailers. No widespread recommendations to size up or down. Fit is comparable to other Under Armour Charged Assert models, with a standard running shoe length and width.
Against its category
600 km average373 mi average
Daily Trainer shoes in NORMA's database last between 320199 and 800 km497 mi across 653 models. At 560 km348 mi, the Under Armour Charged Assert 9 sits in the upper half of that range.
Other versions and similar shoes
- Charged Assert 9~560 km · 348 mi
- Charged Assert 10~560 km · 348 mi
Questions and guides
How many kilometres does the Under Armour Charged Assert 9 last?
The Under Armour Charged Assert 9 lasts about 560 km (348 miles), based on hand-researched wear data for this model. Your own mileage shifts with body weight, running surface, and how you use the shoe.
How many miles does the Under Armour Charged Assert 9 last?
About 348 miles (560 km), based on hand-researched wear data for this model.
When should I replace the Under Armour Charged Assert 9?
Start checking for wear around 336 km (60% of its lifespan). By 448 km the foam and outsole are usually noticeably degraded, and most runners retire the shoe between there and 560 km.
How does the Under Armour Charged Assert 9 compare to other daily trainer shoes?
Daily Trainer shoes in NORMA's database range from 320 to 800 km across 653 models. At 560 km, the Under Armour Charged Assert 9 sits in the upper half of that range.
Is a used Under Armour Charged Assert 9 worth buying?
Often, yes. A pair with under 60% wear (roughly 336 km) still has real training life left. NORMA lists second-rotation running shoes, and sellers can add the miles they logged, so you can see how much life is left.