Workout guide

6 WeeksBuild FitnessIntermediate

Speed Builder Treadmill Plan

Looking to improve your 5k race time? This plan is aimed for runners who can confidently run 5k four times a week and are trying to go faster. Sessions run 20–50 minutes with clear warm-up, main work, and cool-down structure.

Follow the same Speed Builder program in Treadmill Workouts — preview each session, get walk/run prompts with timers, and log distance and stats when you finish.

Jump to program

Speed Builder treadmill workout preview showing Week 1 walk-run intervals and intensity graph

Improve your 5k race time.

What this plan includes

4 treadmill sessions in week one — mostly 20–50 minutes per session.
Level: Intermediate — target: Build fitness.
Structured sessions: warm-up, intervals, and cool-down every time.
Interval coaching: walk/run prompts and timers so you never guess what comes next.

Who is this plan for?

Looking to improve your 5k race time? This plan is aimed for runners who can confidently run 5k four times a week and are trying to go faster. Open Speed Builder in Treadmill Workouts to follow the full 6-week progression with guided intervals.

Live treadmill workout screen with walk-run interval timer and pace guidance

Guided sessions

Let the app handle walk-run transitions

Live cues show what to do now and what is coming next. Focus on form and breathing instead of watching the clock.

Completed treadmill workout summary showing distance, pace, calories, and heart rate

Track progress

See the habit stack up week by week

Each finished session stores distance, average pace, calories, and optional heart rate in one place.

Week 1

Day 1

30 minutes

Warm up

Walk 5 minutes

Intervals

Run 20 minutes

Cool down

Walk 5 minutes

Day 2

40 minutes

Warm up

Walk 3 minutes

Intervals

Run 10 minutes
Walk 1 minute
Run hard 1 minute
Walk 2 minutes
Run hard 1 minute
Walk 2 minutes
Run hard 1 minute
Walk 2 minutes
Run hard 1 minute
Walk 2 minutes
Run 10 minutes

Cool down

Walk 4 minutes

Day 3

27 minutes

Warm up

Walk 3 minutes

Intervals

Run 20 minutes

Cool down

Walk 4 minutes

Day 4

37 minutes

Warm up

Walk 3 minutes

Intervals

Run 30 minutes

Cool down

Walk 4 minutes

Week 2

Day 1

29 minutes

Warm up

Walk 3 minutes

Intervals

Run 22 minutes

Cool down

Walk 4 minutes

Day 2

41 minutes

Warm up

Walk 3 minutes

Intervals

Run 10 minutes
Walk 1 minute
Run hard 90 seconds
Walk 150 seconds
Run hard 90 seconds
Walk 150 seconds
Run hard 90 seconds
Walk 150 seconds
Run hard 90 seconds
Walk 150 seconds
Run hard 90 seconds
Walk 150 seconds
Run 5 minutes

Cool down

Walk 2 minutes

Day 3

25 minutes

Warm up

Walk 3 minutes

Intervals

Run 20 minutes

Cool down

Walk 2 minutes

Day 4

40 minutes

Warm up

Walk 3 minutes

Intervals

Run 35 minutes

Cool down

Walk 2 minutes

Week 3

Day 1

28 minutes

Warm up

Walk 3 minutes

Intervals

Run 23 minutes

Cool down

Walk 2 minutes

Day 2

46 minutes

Warm up

Walk 3 minutes

Intervals

Run 10 minutes
Walk 1 minute
Run hard 90 seconds
Walk 150 seconds
Run hard 90 seconds
Walk 150 seconds
Run hard 90 seconds
Walk 150 seconds
Run hard 90 seconds
Walk 150 seconds
Run hard 90 seconds
Walk 150 seconds
Run 10 minutes

Cool down

Walk 2 minutes

Day 3

30 minutes

Warm up

Walk 3 minutes

Intervals

Run 25 minutes

Cool down

Walk 2 minutes

Day 4

45 minutes

Warm up

Walk 3 minutes

Intervals

Run 40 minutes

Cool down

Walk 2 minutes

Week 4

Day 1

33 minutes

Warm up

Walk 3 minutes

Intervals

Run 10 minutes
Walk 1 minute
Run hard 5 minutes
Run 10 minutes

Cool down

Walk 4 minutes

Day 2

2910 seconds

Warm up

Walk 3 minutes

Intervals

Run 10 minutes
Walk 1 minute
Run hard 2 minutes
Walk 150 seconds
Run hard 2 minutes
Walk 150 seconds
Run hard 2 minutes
Walk 150 seconds
Run hard 2 minutes
Walk 150 seconds
Run hard 2 minutes
Walk 150 seconds
Run 10 minutes

Cool down

Walk 2 minutes

Day 3

27 minutes

Warm up

Walk 3 minutes

Intervals

Run 20 minutes

Cool down

Walk 4 minutes

Day 4

52 minutes

Warm up

Walk 3 minutes

Intervals

Run 45 minutes

Cool down

Walk 4 minutes

Week 5

Day 1

33 minutes

Warm up

Walk 3 minutes

Intervals

Run 25 minutes

Cool down

Walk 5 minutes

Day 2

56 minutes

Warm up

Walk 3 minutes

Intervals

Run 10 minutes
Walk 1 minute
Run hard 3 minutes
Walk 3 minutes
Run hard 3 minutes
Walk 3 minutes
Run hard 3 minutes
Walk 3 minutes
Run hard 3 minutes
Walk 3 minutes
Run hard 3 minutes
Walk 3 minutes
Run 10 minutes

Cool down

Walk 2 minutes

Day 3

31 minutes

Warm up

Walk 3 minutes

Intervals

Run 25 minutes

Cool down

Walk 3 minutes

Day 4

41 minutes

Warm up

Walk 3 minutes

Intervals

Run 35 minutes

Cool down

Walk 3 minutes

Week 6

Day 1

37 minutes

Warm up

Walk 3 minutes

Intervals

Run 25 minutes
Run hard 30 seconds
Walk 30 seconds
Run hard 30 seconds
Walk 30 seconds
Run hard 30 seconds
Walk 30 seconds
Run hard 30 seconds
Walk 30 seconds
Run hard 30 seconds
Walk 30 seconds
Run hard 30 seconds
Walk 30 seconds

Cool down

Walk 3 minutes

Day 2

31 minutes

Warm up

Walk 3 minutes

Intervals

Run 25 minutes

Cool down

Walk 3 minutes

Day 3

36 minutes

Warm up

Walk 3 minutes

Intervals

Run 30 minutes

Cool down

Walk 3 minutes

Frequently asked questions

What is the Speed Builder plan in Treadmill Workouts?

Looking to improve your 5k race time? This plan is aimed for runners who can confidently run 5k four times a week and are trying to go faster.

How many sessions per week does this plan include?

The published schedule covers 23 sessions across 6 weeks, with 20–50 minute sessions. Open the Speed Builder program in the app for the full progression.

How fast should I walk and run on the treadmill?

Pick speeds that match the effort in the app. Walks should feel easy; runs should be a pace you can sustain for the interval length. The plan progresses time and structure — not a mandatory pace.

Can I use this plan on a treadmill or outdoors?

Both work. Treadmills make pacing simple; outdoors you may need to glance at a watch more often. Walk, run, and recovery timings stay the same either way.

What to try next.

Build Fitness

5K to 10K Treadmill Plan

Can you already run 5K comfortably and are ready to keep going forward? This routine will have you running 10k in just 8 weeks.

8 weeks

Endurance

5K Endurance Treadmill Plan

Use a combination of runs and walks to prepare for 5k on the treadmill. Ideally you should be comfortable running for 5-10 minutes before starting this.

6 weeks

Weight Loss

Fat Burner Treadmill Plan

Use high-intensity aerobic exercise to efficiently burn calories and stay fit. If you're comfortable running for short periods of time this 8 week routine is perfect for general health and fitness.

8 weeks

Train with Speed Builder in the app

Open Treadmill Workouts, select Speed Builder, and follow every session with guided walk-run intervals.