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Looking for a treadmill workout? We have not just one, but a choice of 10. Each of these treadmill workouts has been purpose-built with triathletes in mind to help you use the treadmill to your advantage. And before you start complaining that any treadmill workout is boring and tedious and all of those things: Yes, we hear you, we know it can be—but, it can also be a fantastic training resource if and when you jump on it with the right session in your hand and the right attitude in your head.

Whether you’re waiting for better weather to arrive or simply need more of a focus indoors, a treadmill workout can be an incredibly effective tool to maximize your run training.

The 10 sessions below are prescribed using training zones and/or Rate of Perceived Exertion (RPE).

The first four of these workouts all come from Coach Brad Seng of D3 Multisport in Boulder, Colorado, and are designed to keep the fun factor intact when the treadmill gets daunting or boring. He gave us some pointers to help you get the most from your time on the treadmill, too.

– Be sure to set the treadmill at a 1% grade for all runs aside from any specific hill reps. This will ensure you are running closer to the feel of running outdoors.

– Always have a towel and water/electrolyte drink on hand due to the increased sweat rate.

– If possible, use a small fan to help keep you cooler and more comfortable, and be sure you have good ventilation.

– Don’t “race” your neighbor. Stick to your specific workout and don’t worry about what speed or grade the person next to you is running.

– Include some light stretching after your warm-up and a few minutes of easy walking as a cool-down before you get off the treadmill to re-establish your equilibrium.

15 min. easy jogging with 4 × 20 sec. bursts with 40 sec. easy recovery

Repeat the following pattern 3-4 times. Do the strength exercises off to the side of the treadmill:

45 min. hard Zone 3-4 or RPE 7/10 @ 4–6% grade

15 sec. sprint @ Zone 5 or RPE 9/10 @ 4–6% grade

45 sec. Zone 2-3 or RPE 6-7/10 @ 4–6% grade

45 sec. fast uphill Zone 3 or RPE 7/10 @ 4–6% grade

45 sec. Zone 2-3 or RPE 6-7/10 @ 1% grade

90 sec. fast Zone 3 or RPE 7/10 @ 1% grade

Walk 2–3 min. or stand on edge of treadmill to recover

10 min. easy jogging with final 2-3 min. walking

RELATED: The Benefits Of Treadmill Training

15–20 min. building effort to top of Zone 2 or RPE 3-5/10

Starting at the speed where you ended your warm-up, increase treadmill speed by 0.5 mph every quarter-mile until you max out.

Note that speed and then run 5 min. easy.

Complete 4-6 × 45 sec. intervals at your max. Recover with 1 min. easy jog between each interval. 

Easy jog for remainder of time

RELATED: The Tricky Business Of Treadmill Pacing

10–15 min. easy with 4 × 20 sec. bursts/40 sec. easy

2x (4 x 1 min. @ RPE 7/10 with 30 sec. rest after each 1 min. Then do 1K @ 5-10K race pace after #4 of each set)

Walk/jog easy for 2-3 min. between sets

10 min. @ Zone 2 or RPE 3-5/10

5 min. @ Zone 3 or RPE 6-8/10

2 min. @ Zone 1 or RPE 1-2/10

5 min. @ Zone 3 or RPE 6-8/10

RELATED: Nail The Tempo Run

8 min. easy followed by 4 x 20 sec. @ 5K race pace

12 x 1 min. as 1 @ 4% grade, 1 @ 4.5% grade, 1 @ 5% grade

The interval at 4% should be moderate effort, the effort at 4.5% should be moderately hard, and the interval at 5% should be hard. Repeat the pattern four times. Try to run faster with each set of three.

Take 1 min. rest between each interval

Three-time Ironman world champion Mirinda Carfrae said she has a “love-hate” relationship with this workout—and we can see why. She said: “It’s 10 x 3 minutes at best effort, with three minutes rest between each. It’s kind of boring but quite effective!” Of course, if you’re looking to keep the workout under 60 minutes then you’ll need to drop that to six rounds of three minutes in order to ensure you have plenty of time to warm-up and cool-down. When doing best effort work like this, it’s always a good idea to include a few strides in your warm-up.

10-20 min. building effort including a few 20-30 sec. strides

6 x 3 min. @ best effort, 3 min. recovery

RELATED: Train 360: A Complete Look at Absolutely Everything That Goes Into Mirinda Carfrae’s FTP Bike Test

20 min. building from easy to moderate, including a few 15-20 sec. strides at the end

3 x 30-45 sec. hill repeats @ 5% grade, 6% grade, 7% grade—all fast, but not so fast that you can’t finish the workout. Recover for 2:15-2:30 min. between each rep, so each one takes 3 min. total

3 x 30-45 sec. hill repeats @ 6% grade, 7% grade, 8% grade. Slightly increase to the pace you’re running on each one. Recover for 2:15-2:30 min. between each rep, so each one takes 3 min. total

3 x 30-45 sec. hill repeats @ 7% grade, 8% grade, 9% grade. Slightly increase the pace you’re running on each one. Recover for 2:15-2:30 min. between each rep, so each one takes 3 min. total

RELATED: The Science is In, and Hills Are Absolutely Worth the Burn

Note: This is a 45-minute workout as prescribed below, so add five minutes to the warm-up (10 min. in Zone 2) and repeat the first part of the main set (two sets of five minutes at 85% of max. HR instead of one set) if you’re looking to bump it up. This session is prescribed as a percentage of maximum heart rate, so if you’re looking for the RPE equivalent, start out at RPE 6/10 for the first five-minute interval and then nudge that up as you progress through the intervals, so: four minutes at RPE 7/10, three minutes at RPE 8/10, and so on.

5 min. @ 85% max. HR or RPE 6/10

4 min. @ 87% max. HR (slightly harder than previous) or RPE 7/10

3 min. @ 90% max. HR (slightly harder than previous) or RPE 8/10

2 min. @ 95% max. HR (harder than previous) or RPE 9/10

1 min. near max. effort/RPE 9-10/10

10 min. easy walk or run

15 min. gradually increasing speed as you warm up

Set the incline @ 0% throughout, but raise it as follows:

Start at your 5K race pace for the first 1-minute hill (so it is a little harder than 5K race pace since it is at 1%). Keep the speed the same for the whole set, but remember that as you increase the incline each hill will be a little harder, but also shorter).

Increase your speed for each set by 0.1 or 0.2 mph if you feel you are capable. If you have any niggles (e.g. calf pulls) in your recent history, it is better to err on the side of caution—you can increase the speed the next time you do the workout if all goes well.

Focus on great form: Try to get good power per stride from your legs, use your arms to help drive your legs, and keep your torso lifted as you lean your hips forward (don’t bend forward at the waist as you get tired). Jog or walk as easy as you need to during the first part of the rest, but gradually return to the faster end of your warm-up pace before starting the next hill so you are running into it (not starting from a stop or walk).

Run 1-2 miles @ 0% grade, gradually increasing effort from easy to moderate

10 x (1 min. @ 5K pace or RPE 8/10 with 2 min. recovery between each 1 min.)

Note: If you want to increase the difficulty, gradually decrease the rest time and keep the speed the same. You can also build this up to 12 x 1 min. the second time you do it, and then 15 x 1 min. the third.

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