Premium curved treadmill optimized for elite sprint training and high-performance workouts.
Best for: Advanced athletes, serious sprinters, HIIT enthusiasts, and high-performance home or light commercial gyms.
The CT850 SprintMaxx is engineered for maximum speed and stability. With stainless steel bearings, a stable narrower deck, thick 0.75" rubber slats, and premium cherry hardwood shrouds, it delivers smooth, powerful performance with no maximum speed limit. The rock-solid steel frame and thoughtful design provide the stability needed for full-throttle sprints and intense training sessions.
Its self-powered design ensures zero electricity costs while promoting superior running mechanics and higher calorie burn compared to motorized treadmills.
Compare All SB Fitness Curved Treadmills →
Key Features & Benefits
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Stainless steel bearings — Smooth operation optimized for high-speed sprinting
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Premium cherry hardwood shrouds — Attractive, durable accents that outperform flimsy pine alternatives
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Stable, high-performance platform — Built for unshakeable stability during max-effort sprints
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Thick 0.75" rubber slats — Excellent grip and durability
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No magnetic resistance — Pure, unrestricted curved treadmill feel for natural sprint training
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No electricity required — Use anywhere with zero operating costs
Advantages of Curved Treadmills (like the CT850) vs Motorized Models
- 30% increased calorie burn
- 100% energy efficient (powered by you)
- 30% increased oxygen consumption
- 16% increased heart rate
- Promotes better running form and muscle activation
- No maximum speed limit
- Immediate speed adjustment — perfect for HIIT
- Greater reliability and longer service life (no motor/electronics to fail)
Detailed Specifications
| Specification |
Details |
| Assembled Dimensions (L x W x H) |
70" x 24.5" x 63" |
| Running Surface |
17.5" W x 67" L |
| Product Weight |
265 lbs |
| Max User Weight |
350 lbs |
| Step-Up Height (Center) |
13.5" |
| Track Bearings |
Stainless Steel (smooth) |
| Slats |
Nylon 0.75" thick rubber slats |
| Resistance Levels |
None |
| Console |
Digital display (distance, speed, time, calories, total miles) |
| Transport Features |
Built-in wheels + transport handle |
| Leveling Feet |
Yes |
| Electricity Required |
None |
| Warranty (Residential) |
Frame: 10 years / Parts: 5 years / Console: 2 years / Labor: 1 year |
| Warranty (Commercial) |
Frame: 5 years / Parts: 3 years / Console: 2 years / Labor: 1 year |
Commercial Suitability: Light to moderate use.
Additional Measurements
- Running Area: 67" L x 17.5" W
- Outside of Handlebars: 29" W
- Front of Curve Height: 21"
- Rear of Curve Height: 17.5"
Safety Features
- Gravity-assisted start/stop using the curve of the track
- Raised anti-skid rubber slats for maximum grip and shock absorption
- Rear upward curve assists in immediate stopping
- Full handrails for balance and stability
Why Choose the CT850 SprintMaxx?
- Purpose-built for elite sprint and high-intensity performance
- Premium cherry hardwood accents and heavy-duty construction for superior stability
- Excellent value compared to legacy commercial brands
- Low maintenance with a strong residential and commercial warranty
Common Questions Is the CT850 good for sprinting? Yes, this is its primary strength. The stainless steel bearings and stable design excel at high-speed efforts.
How does it compare to the CT700? Check the full comparison in our buying guide.
Shipping & Assembly? Professional curbside freight shipping with detailed instructions. Very minimal assembly.
Financing? Flexible options at checkout.
Ready to reach new speeds? Add the CT850 SprintMaxx to your cart today or contact our team with any questions. We’re here to help you choose the right high-performance treadmill.
Shipping & Returns We offer curbside freight shipping on all treadmills with clear delivery scheduling. See full details in our Shipping Policy.
We want you to be confident in your purchase. If the treadmill isn’t the perfect fit, you have 30 days to return it. See our Return Policy for complete details, including our fair restocking policy for unopened items.
Questions about shipping, assembly, or returns? Contact us anytime at sales@sbfitnessequipment.com — we’re happy to help.
Browse All Curved Treadmills → Full Treadmill Buying Guide →
