Hill sessions don’t need to be complicated to be effective, but a little variation can make them both more challenging and more enjoyable. This Friday Fast Track workout uses repeated sets of short, medium, and longer hill efforts to build strength, power, and aerobic fitness. The changing rep lengths keep you engaged while teaching you to handle different gears on the run.
💥 Today’s Workout

Warm-Up
- 10 minutes at Level II (easy, relaxed running)
Main Set
5 Sets of:
- 20 seconds uphill at Level V, 60 seconds Level II jog down recovery
- 30 seconds uphill at Level V, 60 seconds Level II jog down recovery
- 45 seconds uphill at Level V, 60 seconds Level II jog down recovery
Cool-Down
- 10 minutes at Level II
Post-Run
- 10 minutes gentle stretching
🎯 Why This Works for parkrun
This session blends speed, strength, and stamina in one smart hill workout. The shorter reps develop punch and leg speed, while the longer 45-second efforts challenge your ability to sustain power. For parkrunners, this workout helps you:
- Build hill strength and running power
- Improve cadence and leg turnover
- Develop aerobic fitness with reduced impact
- Handle changes in pace more confidently
- Stay strong when the course or effort bites back
The repeated structure also builds mental rhythm — settle in, execute, recover, repeat.
🧠 How It Should Feel
- The 20-second reps feel sharp and explosive
- The 30-second reps require more control
- The 45-second reps are where the real work begins
- Breathing rises through each set, then settles on the jog down
You should feel challenged, but still able to maintain quality across all five rounds.
🔥 Coach’s Tip
Run tall and drive the arms. On hills, posture matters. Keep your eyes up, shorten the stride slightly, and think quick feet rather than bounding. Save a little composure early so your final sets are just as strong as the first.
This workout was originally inspired by Jacqui’s Urban Fit, where I first came across the 20/30/45 hill rep concept and recognised how effective it could be for building strength, speed, and resilience in runners. I previously wrote about the session in more detail on my main coaching website, where I explored how to use it within a broader training programme. You can read that original article here: https://www.coachray.nz/2023/07/07/friday-fartlek-run-five-times-jacquis-urban-fit-20-30-45-hill-reps/
Want to finish your next parkrun feeling stronger and more in control?
Grab my free guide: Stronger for parkrun – A Quick Routine to Finish Your 5K Better.
It’s a simple, effective strength session you can add after any run — including today’s Friday Fast Track workout.