Negative Split 5K Challenge

Workout - Negative Split 5K Challenge

• 10min @ 7'00''/km
• 1.0km @ 5'30''/km
• 1.0km @ 5'15''/km
• 1.0km @ 5'00''/km
• 1.0km @ 4'45''/km
• 1.0km @ 4'30''/km
• 10min @ 7'00''/km

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Intro

Below is a breakdown of The Running Channel’s Negative Split 5K Challenge video. The full video has more detail, but here’s how to start using this workout right away.

Key points

• Negative splits, running each km faster than the one before, separate accomplished racers from people who go out too hot. The pacing idea works at any distance, from 5Ks to marathons. Our Mastering the 10K guide shows how to apply it to longer efforts.
• The approach is simple. Start your first kilometre at or slightly under your 5K PB average pace. Every lap after that has to be faster. Once you hit km 2, rely on your watch’s auto-lap beeps and stop the constant pace checks.
• Practical tricks: pick a song that matches your km 1 target time, start on a downhill stretch to find your rhythm, or have a friend call out splits aloud.

Workout example

Running steady with negative splits builds aerobic capacity and raw speed. If you want a fuller program, pair this with our guide on interval training with science-backed workouts.

1. Figure out your starting pace. Take your recent 5K PB and convert it to a per-kilometre target (for example, 5:50/km for a 29:15 5K). For a bigger-picture approach, see these interval strategies to cut minutes off your time.
2. Run 5 km with each lap getting faster:
   • KM 1: target 5:50/km (or your PB split).
   • KM 2: 5-10 seconds faster (≈5:40-5:45).
   • KM 3: another 5-10 seconds quicker (≈5:30-5:35).
   • KM 4: continue the trend, ~5:20-5:30.
   • KM 5: your fastest finish, ~5:10-5:20.
3. Set your watch to auto-lap and only check it after the first kilometre. Let the lap alert push you.
4. Optional cue: play a song that lasts exactly your km 1 target time. When it ends, you know you’ve nailed the pace.

Closing note

Try the negative-split 5K, tune the pace drops to your fitness, and log your times in the Pacing app. Running faster with every kilometre is satisfying. See how much speed you can find.

References

• Negative Split 5K Challenge | Can You Get Faster Every KM? - YouTube (YouTube Video)