5K Race Pace Run with Strides: Speed Development for Triathlon

Session Overview

This 45-minute session develops your ability to run at 5K race pace — the intensity required for the run leg of a sprint triathlon or a fast standalone parkrun. Strides are short 20-second accelerations that improve running economy and teach your legs to turn over quickly without generating significant fatigue.

What You’ll Need

• Running shoes — use your race shoes if you have them to practise the feel
• GPS watch or running app for pace guidance
• Flat, traffic-free route or athletics track
• Water (particularly important in warm weather)

Warm-Up (10 minutes)

Jog easy at Zone 2 for 8 minutes at a fully conversational pace. Then complete 4 x 20-second strides: accelerate from jog pace to approximately 85% effort, hold for 10 seconds, then decelerate smoothly. Walk 30 seconds between each stride. These strides activate fast-twitch fibres and prepare the neuromuscular system for race-pace work without causing fatigue.

Main Set (25 minutes)

The main set alternates race-pace intervals at your target 5K effort (Zone 4–5) with easy recovery jogs. Your 5K race pace is approximately the fastest pace you can sustain for 30 minutes — hard, controlled effort where you are working but not sprinting.

• 3 x 4 minutes at 5K race pace (Zone 4–5), 3 minutes easy jog recovery between each
• 6 x 20-second strides at 90% effort, 40 seconds easy walk or jog between each
• 2 minutes easy before starting cool-down

Cool-Down (10 minutes)

Jog easy at Zone 1–2 for 8 minutes, then walk for 2 minutes until fully recovered. After the run, spend 5–10 minutes stretching the calves, hip flexors and hamstrings — these muscles take the most load during race-pace running and benefit significantly from post-session mobility work.

Coaching Notes

• Use your GPS watch to hold consistent pace on the race-pace intervals — it is easy to drift 10–15 seconds per km without realising
• Common mistake: running recovery jogs too fast — slow down properly between intervals to get the full benefit of the intensity contrast
• Easier option: replace the 4-minute intervals with 3-minute intervals at the same pace, keeping the stride work the same
• RPE for race-pace intervals: 8 out of 10 — hard, controlled, sustainable for 4 minutes but not for 10 minutes