adidasOriginal price $160. Sale price $112.
Adizero Boston 13
A road trainer with glass-fiber Energyrods for tempo sessions and faster training.
Recorded uses: Everyday runs, Faster training · Information checked 2026-09-23.
On$180
Cloudflow 5
Built for tempo sessions and intervals, with a glass-fiber nylon Speedboard and a pronounced rocker. Best considered by runners who favor a firm, planted feel.
Checked US price · 2026-09-14. Before tax and shipping. Selected Black/Black men's US listing; available sizes vary.
The shoe at a glance.
The Cloudflow 5 suits runners who want a firm, planted shoe for tempo runs and intervals, with a pronounced rocker helping move the stride forward. Its glass-fiber nylon Speedboard adds structure for faster training, although the ride offers less bounce than some runners expect from a speed shoe. The close upper can also feel warm and restrictive during longer sessions or hot weather. A snug midfoot and low toe box make careful checks of toe clearance especially useful when choosing between sizes.
Pros and cons
Our summary of published testing and reviewer impressions. Checked 2026-10-03.
Pros
- A steady feel for its compact dimensions.
- The upper holds the foot without excessive lace pressure.
- Grip remains useful on wet surfaces.
Cons
- The foam is very firm with weak rebound.
- Weight and poor airflow undermine its faster-training role.
A closer look
Where it fits in your running
Recorded uses: faster training. Designed for road running.
Cushioning and ride
Published testing found a forward-rolling forefoot and a secure upper. Those features do not offset the unusually muted cushioning if a lively workout ride is your priority.
Our editorial ride category: firm.
Fit and sizing
Snug through the midfoot, with a low toe box. Check toe clearance carefully if you are between sizes.
Recorded widths: standard.
The selected On listing specifies regular width. Additional widths were not verified.
Men’s listing; widths and linked price apply to the recorded product range. Check your size and stock at the retailer. An offered width does not guarantee personal fit.
Before you choose
Limited bounce for a speed trainer, and the close, warm upper may feel restrictive on long or hot runs.
Manufacturer specifications
Specifications from the brand’s product information.
- Listed weight
- 278 g
- Heel-to-toe drop
- Not verified
- Heel stack height
- Not verified
- Plate
- Other performance plate / rods
- Support
- Neutral
- Recorded product range
- Men’s
- Widths offered
- Standard
Source: On product page . Listed weights may refer to different reference sizes.
Follow the evidence.
Information checked 2026-09-14. Ride and fit descriptions use brand information and published reviews where available; matching categories are our editorial interpretation.
- On product details Official identity, intended use and listed specifications. The linked market may differ from the US.
- US price and buying options Selected Black/Black men's US listing; available sizes vary.
On specifies a glass-fiber nylon-blend Speedboard for faster training. It is a non-carbon performance plate. Published drop figures conflict, so drop remains unverified.
Know what sits behind the advice.
Product information and editorial guidance help you compare. Catalog details checked 2026-09-14.
From the manufacturer
Identity, intended use, offered widths, and listed specifications. We label these as brand figures; reference sizes can differ.
Read On’s specificationsFit and ride notes
Brand information and published reviews inform the descriptions of comfort, fit, and ride. Use these notes to choose pairs to try; your experience can differ.
Our matching categories
Ride labels and recommendation rules are editorial interpretations of the recorded sources. They describe catalog matches and cannot guarantee personal fit.
How the finder choosesA missing specification means “not verified,” not zero. Price and availability need a fresh check at the retailer.
Other shoes to compare.
These share a recorded surface and catalog category. Shared running uses guide the order; personal fit and performance are not guaranteed.
adidas$150
Adizero EVO SL
A light, plate-free road trainer for everyday miles and faster sessions.
Recorded uses: Everyday runs, Faster training · Information checked 2026-09-07.
adidasOriginal price $305. Sale price $260.
Adizero Prime X3 STRUNG
A very tall, stiff road trainer for long, steady fast efforts.
Recorded uses: Faster training · Information checked 2026-09-07.