Sub-18 5k Challenge

Workout - Sub-18 5k Challenge

• 10min @ 6'00''/km
• 2.0km @ 3'36''/km
• 3.0km @ 3'20''/km
• 5min @ 6'30''/km

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Intro: Here’s a breakdown of “Can I run a sub 18 minute 5k? (PB is 18:18)” from This Messy Happy. Watch the video for the coaching tips. We’ve pulled out the main ideas so you can try the workout yourself.

Key points:

• For a sub-18 5K, hit 86 seconds per 400 m lap, about 3:36/km.
• Hold steady through the first 2 km, then accelerate if you have the energy.
• Mental discipline and prep matter. Play the race in your head first.
• A measured 400 m track gives real-time feedback and removes the guesswork.

Workout example: Run 12.5 laps (5 km) on a 400 m track:

• Jog easy 5-10 minutes to warm up.
• Start from the 200 m mark. Run the first 2 km (5 laps) at 86 sec per lap (about 3:36/km).
• If you’re not gassed at halfway, drop to 80-82 sec per lap for the final 2.5 km.
• Finish strong, staying within a second or two of your target splits.

Closing note: try this workout with the Pacing app to set lap times that fit your current fitness, and see if you can dip under 18 minutes.

References

• Can I run a sub 18 minute 5k? (PB is 18:18) - YouTube (YouTube Video)