What Is a Tempo Run? (And Why It Makes You Faster — Even If You’re Not Fast Yet)
If you’re training consistently but not getting faster, this is probably the missing piece. Tempo runs are one of the most effective ways to build speed, improve endurance, and make race pace feel easier — yet many runners either skip them or run them incorrectly.
Here’s what a tempo run actually is, how to do it properly, and why it can make a huge difference to your performance.
What Is a Tempo Run?
A tempo run is a sustained, comfortably-hard effort that builds both speed and endurance at the same time. It sits right between easy running and all-out racing — fast enough to feel challenging, but not so fast that you’re gasping for air.
Most runners describe a tempo run as:
- Comfortably hard
- A controlled effort
- You can talk in short phrases, not full sentences
- You’re working hard, but not maxing out
Essentially, it’s a steady run done at a pace you could hold for 45–60 minutes in a race.
Why Tempo Runs Matter
Tempo runs improve your lactate threshold — the point where your body starts producing fatigue faster than it can clear it. When you raise this threshold, you can:
- Run faster with less effort
- Hold a quicker pace for longer
- Improve your half and full marathon times
- Build strength and stamina without sprinting
For many runners, tempo runs offer the best return on investment of any workout in the schedule, as they’re one of the most efficient ways to improve running speed.
How Fast Should a Tempo Run Be?
You can determine how fast your tempo runs should be based on either pace, heart rate, or perceived effort. Use whichever makes the most sense to you:
- Pace: Roughly 10K to half marathon pace for many runners, or your 45–60 minute race pace
- Heart Rate: Around 85–90% of max HR (varies per athlete)
- Effort: A 7–8 out of 10 perceived effort, breathing hard, but controlled
How Long Should a Tempo Run Be?
Tempo runs are usually short and focused. If you’re just starting out, aim to run for 10-15 minutes at tempo pace. Intermediate runners can aim for 20-25 minutes and more advanced runners will often hold 30-40 minutes at tempo pace.
You can do the tempo segment as one continuous block or split it into intervals (e.g., 2 x 10 minutes at tempo pace with 2 minutes easy between). Interval-style tempo runs are perfect if you’re new to tempo training or early in a training block, as they reduce fatigue while still providing all the key benefits.
And don’t forget to warm up and cool down! This can just be 10 minutes of easy running on either side of your tempo segment.
When to Add Tempo Runs to Your Training
Once per week is plenty for most runners. The best times to include them are during half or full marathon training, when building race-specific speed, or anytime you want to feel stronger at moderate-to-hard efforts.
Just avoid tempo runs when you’re extremely fatigued or recovering from hard intervals, as they work best when your legs are relatively fresh.
Final Thoughts
A tempo run is one of the most effective workouts you can do to get faster and improve endurance. Keep the pace controlled, stay relaxed, and gradually build your confidence at that comfortably hard effort. Over time, you’ll notice you can hold faster paces with far less effort, making race day feel smoother and easier.
