On
Cloudflow 5
Product Judgment
Solid
7.3
Category: Speed Trainer
Release year: 2025
Price Judgment
Unjustified
Common retail price: ~$140
Availability: Widely Available
Description
Purpose-built tempo trainer in On's performance lineup. Prioritizes stability and control over plushness. Reviewers highlight firm ride and premium build.
Ride feels low-to-the-ground, firm, and highly stable, emphasizing predictability at speed. Aggressive rocker and Speedboard plate create propulsive transitions, but energy return is muted. Stiffness and weight limit versatility, especially at slower paces.
Best suited for runners seeking a firm, stable shoe for tempo workouts and mid-distance efforts. Not recommended for long runs, recovery, or those preferring soft, energetic rides. Excels for midfoot/forefoot strikers who value control and durability in a tempo-focused package.
Performance Scores
Comfort
6Firm midsole and limited breathability reduce comfort, especially at slower paces.
Energy Return
5Low energy return creates a flat, underpowered sensation during runs.
Stability
8Stiff Speedboard plate and firm ride deliver high stability at tempo paces.
Durability
8Durable upper and outsole rubber withstand frequent use and abrasion.
Fun to Ride
6Aggressive rocker is engaging at speed but ride feels harsh and flat overall.
Run Fitness
Daily
5Firm, stiff ride and weight limit comfort for daily mileage.
Long
4Stiffness and low energy return make it unsuited for long, easy runs.
Tempo
8Aggressive rocker and stability excel at faster tempo efforts.
Race
6Propulsive ride works for short races, but weight and flatness limit top-end speed.
Recovery
3Firmness and lack of softness make it uncomfortable for recovery runs.
Pros & Cons
- Stable at speed
- Durable upper
- Secure fit
- Aggressive rocker
- Low energy return
- Heavy for tempo shoe
- Limited breathability
Firm platform and Speedboard plate provide excellent stability for tempo running.
Dual-layer mesh upper is highly durable and resists wear over time.
Snug midfoot and gusseted tongue create a secure, locked-in fit.
Aggressive rocker geometry promotes quick transitions and propulsive toe-off.
Midsole delivers disappointing energy return, resulting in a flat ride feel.
Heavier than most modern tempo trainers, reducing appeal for speedwork.
Tightly woven mesh upper restricts airflow, causing heat buildup in warm weather.
Specifications
Best for paces
3:45-5:15 min/km
Drop
6 mm
Stack height
32.8 mm heel / 28.7 mm forefoot
Weight
271 g
Drop
6 mm
Stack height
32.8 mm heel / 28.7 mm forefoot
Weight
271 g
Pronation
N/A
Width
medium
Terrain
Road
Technologies
Helion HF foam, Speedboard plate, CloudTec outsole
Plate
Composite
Best for paces
3:45-5:15 min/km