Side by side comparison: Altra Rivera 4 vs On Cloudflow 5
Product Judgment
Solid
released 2025
Price Judgment
Buy
Phasing Out
Performance
Run Fitness
Pros & Cons
Lightweight and flexible
Natural zero-drop ride
Comfortable for daily miles
Limited stability
Heel collar durability issues
Narrower fit than classic Altra
Specs
| Best for | 4:45-6:30 min/km |
| Drop | 0 mm |
| Stack | 28 mm heel / 28 mm forefoot |
| Weight | 235–247 g |
| Terrain | road |
| Width | medium |
| Pronation | neutral |
| Season | all seasons |
| Plate | no |
Judgment Summary
Lightweight, flexible zero-drop daily trainer best for narrow to medium feet and versatile runs.
Product Judgment
Solid
released 2025
Price Judgment
Unjustified
Widely Available
Performance
Run Fitness
Pros & Cons
Stable at speed
Durable upper
Secure fit
Low energy return
Heavy for tempo shoe
Limited breathability
Specs
| Best for | 3:45-5:15 min/km |
| Drop | 6 mm |
| Stack | 32.8 mm heel / 28.7 mm forefoot |
| Weight | 271 g |
| Terrain | road |
| Width | medium |
| Pronation | neutral |
| Season | all seasons |
| Plate | Composite |
Judgment Summary
Firm, stable tempo trainer with aggressive rocker; limited energy return and heavy for its class.
Where to Buy