BEST INCLINE TREADMILL 2026

Our best incline treadmill is the NordicTrack X24. With a -6% to 40% incline range, it's one of the most versatile treadmills available — you can train however you want, from active recovery at decline to high-intensity climbs. Research shows you can burn over 3x more calories at 40% than flat walking¹³ and nearly 2x more than standard 12–15% incline treadmills.¹⁴ What sets the X24 apart is what happens when that range is paired with iFIT. iFIT automatically adjusts speed and incline in real time based on your trainer, your fitness level, and your goals — so you're not manually managing the machine, you're just training. Over time, iFIT tracks your progress and evolves your workouts so you keep improving without hitting a plateau. No other treadmill combines this range of incline with this level of personalization.

A good incline range depends on your goals, but most standard treadmills top out at 10–15% — enough for some incline training programs but limited in the variety of terrain you can simulate. For walkers looking to build strength and burn more calories without increasing speed, a steeper range makes a significant difference. At 40% incline, you can burn over 3x more calories than flat walking¹³, and nearly 2x more than standard 12–15% incline treadmills.¹⁴ For runners, running with incline and decline variation simulates outdoor terrain, builds sport-specific strength, and improves endurance. The NordicTrack X24 offers a -6% to 40% incline range — a wide range available for home use — paired with iFIT workouts that automatically adjust incline in real time to match your trainer and fitness level. This means you can access the full range of training intensity without manually programming anything, making it easy to increase intensity gradually and stay consistent over time.

A 40% incline treadmill opens up a level of training intensity that standard treadmills simply can't reach. At steeper grades, you engage a variety of muscle groups while increasing calorie burn without increasing speed. At 40% incline, you can burn nearly 2x more calories compared to standard 12–15% incline treadmills¹⁴, and over 3x more than walking on a flat surface.¹³ This makes high-incline training an efficient way to build strength and burn calories, especially for walkers who want meaningful results without increasing speed. Beyond calorie burn, the wide incline-to-decline range — from -6% to 40% on the NordicTrack X24 — allows for terrain simulation that keeps workouts varied and engaging over time. Paired with iFIT, the machine automatically adjusts incline to match your trainer and fitness level in real time, so the full range of intensity is always accessible without manual programming.ner and fitness level in real time, so the full range of intensity is always accessible without manual programming.

Research shows at 40% incline, you can burn nearly 2x more calories compared to standard 12–15% incline ranges¹⁴, and over 3x more than walking on a flat surface.¹³ This makes incline training an efficient way to increase workout intensity — particularly for walkers who want to maximize results without increasing speed. On NordicTrack treadmills paired with iFIT, incline adjusts automatically during workouts to match your trainer and fitness level in real time, so you're always training at an intensity that's appropriate for your goals. This removes the need to manually manage settings and ensures every session takes full advantage of the incline range available on your machine.

Incline training and flat running serve different purposes, and the best approach depends on your goals. Flat running at higher speeds builds cardiovascular endurance and running economy, while incline training increases intensity through grade rather than speed — engaging different muscle groups and elevating calorie burn at the same speed. For runners, running with incline and decline variation simulates outdoor terrain, builds sport-specific strength, and improves endurance. Many effective training programs combine both — using incline sessions for strength and calorie burn, and flat sessions for speed and endurance. On NordicTrack treadmills with iFIT, your machine automatically adjusts between incline and decline to match your trainer's terrain and your fitness level in real time, making it easy to incorporate both styles of training into a single progressive program without manually managing the machine.

Incline treadmills are worth it if you want to increase intensity, build lower-body strength, and burn more calories without relying on running speed or longer sessions. The wider the incline range, the more flexibility you have to train progressively over time — starting at moderate grades and working toward steeper climbs as your fitness improves. For walkers especially, the difference is significant: at 40% incline, you can burn over 3x the calories compared to walking on a flat surface¹³ and nearly 2x more calories compared to standard 12–15% incline treadmills.¹⁴ That's a level of intensity many people associate with running, achieved at a pace that's sustainable and low-impact. NordicTrack incline treadmills pair that incline range with iFIT, which automatically adjusts speed and incline in real time based on your trainer and fitness level. This removes the need to manually manage the machine and ensures every session stays appropriately challenging as you improve. For anyone focused on long-term consistency and progressive results, a high-incline treadmill with connected training is a sound investment.

The best NordicTrack treadmill for incline training is the X24, which offers a -6% to 40% incline range compared to other models with up to 12-15% incline. The X24 wide range supports everything from active recovery at decline to high-intensity climbs that build lower-body strength and elevate your calorie burn. At 40% incline, you can burn nearly 2x more calories than at standard 12–15% ranges¹⁴, and over 3x more than walking on a flat surface.¹³ For buyers who want high-incline capability at a lower price point, the X16 offers the same -6% to 40% range with a 16" screen in a more streamlined package. The Commercial 2450 is the best foldable option for smaller spaces, with a -3% to 12% incline range that covers most training needs while folding out of the way when not in use. All three pair with iFIT for automatic speed and incline adjustments that personalize every workout to your fitness level in real time. The right choice depends on your training goals, budget, and available space.

Yes, some NordicTrack incline treadmills feature foldable frames that allow you to save space when not in use, making it easier to add incline training to your home without needing a dedicated workout area. The NordicTrack Commercial 2450 is the best foldable incline treadmill in the NordicTrack lineup, with a -3% to 12% incline range, speeds up to 14 MPH, and a 24" HD touchscreen in a frame that folds vertically and rolls out of the way. It's a strong option for buyers who don't want to sacrifice performance for space efficiency. The NordicTrack Commercial 1250 is a more budget-friendly foldable option with a similar incline range and essential performance features at a lower price point. Both pair with iFIT for guided, automatically adjusting workouts that personalize intensity to your fitness level in real time. If space is not a constraint and maximum incline range is the priority, the X24 and X16 offer a -6% to 40% range in a non-foldable frame built for high-intensity incline training.

Automatic adjustments mean the treadmill change speed, incline, and decline in real time based on trainer cues or your personal fitness data — without you touching the controls. When you manage settings yourself, you interrupt your workout rhythm making it easy to default to a comfortable pace rather than one that's actually challenging you. With iFIT's automatic adjustments, your machine does the work of managing intensity, so every session is appropriately challenging regardless of how motivated you feel. SmartAdjust™ ensures that if you modify a setting, the rest of the workout recalibrates to maintain the right overall effort. ActivePulse™ uses heart rate data to keep you in your target zone automatically. Over time, these systems use your training history to personalize future sessions, reducing plateaus and guesswork. The result is a machine that trains you, rather than one you have to train yourself to use correctly.