60-Minute Tempo Run: Build Your Lactate Threshold

Session Overview

This 60-minute tempo run builds your lactate threshold — the pace you can sustain for a long time before fatigue accumulates. It’s the cornerstone run session for Olympic and 70.3 distance racing, training your body to hold race pace comfortably for the run leg after a hard swim and bike.

What You’ll Need

• GPS watch or running app to track pace
• Heart rate monitor (optional but recommended)
• Flat-to-rolling route, or track
• Energy gel or drink for sessions in hot weather

Warm-Up (12 minutes)

Start with 8 minutes of easy jogging at a conversational pace (RPE 3/10). Then add 4 minutes of progressive strides: 4 x 30-second accelerations building from easy to tempo effort, with 30-second jogs between each. By the end of your warm-up, your legs should feel loose and your heart rate should be sitting around 70% of max.

Main Set

The main set is a 35-minute continuous tempo run at a sustained, comfortably hard effort. Think of it as the pace you could hold for roughly 60 minutes in a race — faster than your easy pace, but not all-out sprint effort.

• 35 minutes continuous at tempo pace (RPE 7–7.5/10, or approximately 80–85% of max heart rate)
• Aim for consistent pace throughout — the second half should feel harder but not significantly slower
• Optional progression: split into 2 x 17 min tempo with 2 min easy jog recovery if you are new to tempo running

Cool-Down (13 minutes)

Finish with 8 minutes of easy jogging dropping your effort progressively to an easy shuffle, followed by 5 minutes of standing calf stretches, hip flexor stretches, and quad stretches. Never skip the cool-down after a tempo session — it flushes lactic acid and reduces next-day soreness.

Coaching Notes

• Your tempo pace should feel “comfortably hard” — you can speak a word or two but not hold a full conversation. If you’re gasping, you’ve gone too fast.
• A common mistake is going out too fast in the first 5 minutes. Start at the lower end of your tempo range and build into it — you’ll run faster in the second half.
• Scaling easier: break the main set into 3 x 10 min tempo with 2 min jog recovery. Scaling harder: add a 5-minute race-pace effort at the very end of the main set before cooling down.
• Target heart rate zone: Zone 3–4. If you have a power metre on a smart treadmill, aim for 88–93% of your functional threshold pace.