Treadmill hill workout: 6 sessions that actually feel like hills

Most people use the treadmill incline button the way they use a gym's foam rollers: occasionally, aimlessly, and mostly while looking at their phone. A treadmill hill workout is the same button used on purpose.

Done well, a hill workout on a treadmill gives you most of what outdoor hill repeats do: hard aerobic work, strong legs, less pounding than flat speed work, and an effort you can control to the decimal. It won't train downhill running, and it won't be as interesting as a real hill. But if you live somewhere flat, or it's dark and icy at 6am, it's the next best thing. This post covers how to set incline and speed, six treadmill hill sessions from beginner to hard, and where they fit in a week, whether you plan it yourself or follow a coach that tells you how hard to run today.

Before your first treadmill hill workout

Three things to know before you touch the incline button.

1% isn't a hill. It's the flat road. On a treadmill there's no air resistance, so running at 0% costs slightly less energy than running outdoors at the same speed. In trained runners at moderate to fast speeds, a 1% grade most accurately matched the energy cost of outdoor running over runs of about five minutes (Jones and Doust, 1996). Treat 1% as your "flat" and count hills from there.

Incline is percent grade, not degrees. A 10% grade rises 10 units for every 100 forward, about 5.7 degrees. Studies that talk about a 9° slope are describing roughly a 16% grade, steeper than many treadmills go. Check your machine's maximum before planning a session around it.

Don't hold the handrails. If you need to grip the rails to keep up, the incline or speed is too high. Holding on lets your arms take some of the work and changes your posture, so the workout stops being a hill. Lower the speed until you can run hands-free.

If you're brand new to running, start with walking inclines and easy running for a few weeks before anything structured. That's what a plan for absolute beginners should do anyway: build the habit first, add hills later.

Why do hill workouts on a treadmill?

The case for hills in general is decent, if not miraculous:

• ›Uphill intervals can improve running economy and 5 km performance. In 20 well-trained runners doing six weeks of different uphill interval programs, the mean 5 km time-trial improvement across all programs was 2.0%, and the highest-intensity program was best for running economy, improving it by 2.4% (Barnes et al., 2013). That study used a treadmill.
• ›Flat intervals work too. In well-trained distance runners, six weeks of uphill or level-grade intervals both improved how long they could run at the speed linked to VO2 max, and the level-grade group gained more (Ferley, Osborn and Vukovich, 2013).
• ›Uphill running is lower impact. In a lab study at a steady 3 m/s on a force treadmill, normal impact force peaks were smaller uphill than on the level and absent at a 9° incline, while propulsive forces rose (Gottschall and Kram, 2005).

So: hills are a good way to do hard work with less pounding, not a secret weapon. The treadmill adds two things outdoor hills can't: an exact, repeatable gradient, and a climb that lasts as long as you want.

Good uphill running starts with good mechanics on the flat. Running drills explained covers the skips and form work that make driving up an incline feel natural rather than desperate.

How to run uphill on a treadmill

• ›Shorten your stride. Quick, small steps. Bounding up a 6% incline burns you out in a minute.
• ›Stay tall. Lean slightly from the ankles, not by folding at the waist.
• ›Drive your arms forward and back, not across your body.
• ›Run by effort, not by the speed readout. Your usual pace is irrelevant at 6%. Pick a speed that produces the target effort.
• ›Change one variable at a time. Raise incline or speed, not both, so you know what made the rep harder.

6 treadmill hill workouts

Every session starts with 10 minutes of easy running at 1%, a few drills off the belt, and two or three strides. A proper running warmup explained step by step covers what to include. A couple of skips, like the b skip, are a good way to wake up your hamstrings and hip flexors before climbing. Every session ends with 5–10 minutes easy at 1%.

Effort targets use the 1–10 RPE scale and five heart rate zones used across this blog. Inclines are starting points; adjust to your machine and your legs.

1. Incline walk-run

The beginner's hill workout. Short running segments on a gentle incline, recovery walks on a steeper one. It teaches you to climb without turning every run into a gasping contest.

2. Short hill repeats

The classic. Hard but controlled 60-second climbs, the treadmill version of running up a hill and jogging back down. Keep the speed the same for every rep; if you can't, lower it for the rest of the session.

3. Long hill repeats

Three-minute climbs at a moderate grade, around threshold effort. Good for half and full marathoners who want threshold work with less impact. You should be able to say a few words, not sentences.

4. Hill pyramid

The incline rises with the rep length, then comes back down. It breaks the boredom and makes the hardest rep the middle one, when you're warm but not cooked.

5. Rolling hills

A continuous run that alternates flat and climbing segments. It's the closest a treadmill gets to a hilly route and a good way to practice running hills by effort: let the pace drop on the climbs, keep the effort steady.

6. Steep hill sprints

Short, near-maximal efforts on a steep incline with full recovery. Because the belt takes a few seconds to speed up and slow down, reps are slightly longer than outdoor hill sprints. Either slow the belt for the recovery, or step carefully onto the side rails while holding the handrails and lower yourself back onto the moving belt the same way. If you're not confident doing that, slow the belt. Treadmill hill sprints are covered in more detail, including when they suit lifters.

How hard should a treadmill hill workout be?

Hard sessions should feel hard and repeatable, not heroic.

• ›Short repeats: RPE 8. The last rep should look like the first.
• ›Long repeats: RPE 7–8, zone 4 by the end of each rep.
• ›Rolling hills and walk-runs: mostly easy, with the climbs at a steady effort.

Heart rate lags behind short efforts, so use effort for 60-second reps and heart rate for the 3-minute ones. Treadmill rooms are often warm, which pushes heart rate up at the same effort; a fan helps, and so does slowing down.

What a treadmill can't do

• ›Downhill. Most treadmills don't decline, and downhill running is where the soreness comes from. If your race is hilly, get on real hills sometimes. Our guide to hill running covers downhill technique and why to build it gradually.
• ›Uneven terrain. A belt is perfectly smooth. Trail runners need trails.
• ›Real-world pacing. A treadmill holds the speed for you. Outdoors, you have to do it yourself.

Where treadmill hill workouts fit in a week

A structured hill session is a hard day. Most runners need only one hill session a week, counted as one of their one or two hard sessions. Rolling hills at an easy effort and incline walk-runs can count as easy days if you keep them easy.

A sample week for someone running four days and lifting twice:

Never heavy legs the day before the hill session or the long run. Heavy lower goes on an easy run day, ideally with an easier day after it.

Common treadmill hill mistakes

• ›Holding the handrails. If you need them, the speed is too high.
• ›Raising incline and speed together. You won't know which one broke you.
• ›Starting at max incline. Build up over weeks. Calves and Achilles adapt slower than lungs.
• ›Treating 0% as flat. 1% is your flat.
• ›Every run on an incline. Mix it up. Most of your running should still be easy and flat.

How exrsz handles hill workouts

exrsz builds a periodized plan from your goal, schedule, level and equipment, so if your gym has a treadmill and no hills nearby, hill sessions can be written for the belt. It balances them against your lifting in one plan, adapts each week to how you actually trained, and reshuffles missed sessions instead of stacking them.

FAQ

What is a good treadmill hill workout for beginners?

Try 8 rounds of 2 minutes running at 2–3% incline and 2 minutes walking at 5–6%, after a 10-minute easy warm-up. Keep the running at an easy-to-moderate effort, about RPE 4–5.

What incline should a hill workout on a treadmill be?

Start with 4–8% for repeats, depending on rep length: steeper for short reps, gentler for longer ones. Remember that 1% is roughly equivalent to flat outdoor running (Jones and Doust, 1996).

Are treadmill hills as good as real hills?

For uphill work, they're a solid substitute, and uphill intervals on a treadmill improved economy and 5 km performance in well-trained runners (Barnes et al., 2013). They can't train downhill running, so mix in real hills if your race has them.

Should I hold the handrails during a treadmill hill workout?

No. Holding on lets your arms take some of the work and changes your running posture. If you can't run hands-free, lower the speed or the incline.

How often should I do treadmill hill workouts?

Once a week is enough for most runners, as one of your one or two hard sessions. Easy rolling-hill runs can happen more often if you keep the effort easy.