Run Faster Every Kilometre Until You Can't - The Running Channel

Aug 13, 2025

Intro: This is a quick summary of Run Faster Every Kilometre Until You Can’t from The Running Channel. It’s a great watch — we’re breaking it down so you can try the workout today. Be sure to check out the full video for all the details.

Key Points:

The challenge is a negative‑split race: you must start at a prescribed pace and get faster each kilometre by a set number of seconds (e.g., 8–10 sec).
No pausing the watch between kilometres – the clock runs continuously, so you have to manage the acceleration on the fly.
The winner is the runner who logs the most kilometres while still meeting the “faster‑each‑km” rule.
The video emphasizes pacing strategy, realistic increments, and listening to your body when the pace becomes unsustainable.

Workout Example:

Choose your starting pace – e.g., 5:10 min/km (5 min 10 sec per kilometre).
Set the increment – let’s use 8 sec faster per kilometre.
Run the following sequence until you can no longer hit the target pace:
- km 1: 5:10
- km 2: 5:02
- km 3: 4:54
- km 4: 4:46
- km 5: 4:38
- …continue adding 8 sec each kilometre.
If a kilometre feels too hard, slow the last few seconds to stay on the target (e.g., aim for 4:46 instead of 4:38 if you’re fading).
Record each split; the moment you can’t hit the required faster pace, stop the challenge.

Tip: You can customise the start pace and increment to match your current fitness. Use the Pacing app to set the exact minute‑per‑kilometre targets and let the watch alert you when you’re within the required window.

Closing Note: Give the “run faster each kilometre” challenge a go – adjust the paces to suit you and see how many negative‑split kilometres you can string together. Have fun, stay safe, and remember to watch the full video for more insights and race‑day inspiration!