Pre-Race Fartlek Sharpener

Pre-Race Fartlek Sharpener

Workout - Pre-Race Fartlek Sharpener

  • 10min @ 7'00''/km
  • 5 lots of:
    • 2min @ 4'00''/km
    • 2min @ 8'00''/km
  • 5 lots of:
    • 120m @ 5'00''/km
    • 30s rest
  • 5min @ 7'00''/km
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Intro

A breakdown of “Amsterdam Marathon Final Preparations: Fartlek + Fueling” by Seth James DeMoor. Here are the takeaways so you can run this workout. The full video has the rest.

Key points

  • A short, low-volume fartlek during taper keeps legs sharp. The point is quick leg turnover.
  • Pick one bottle colour and mark it with tape (green on green) to cut mental load at aid stations.
  • Rain is likely, so training in wet weather pays off on race day.
  • After lighter days of travel and recovery, a quick leg-loosener restores race-day confidence.

Workout

Baby fartlek (2 min on / 2 min off):

  • Warm-up: 10-15 minutes easy jog.
  • Main set: 4-6 reps of 2 minutes slightly quicker than race pace (around 5:30/mi if you’re targeting a 3:45 finish), with 2 minutes easy between.
  • Finish with 4-6 strides of 120-130 meters, sharp and quick.

Later he bumped the intensity to 3 min on / 2 min off for the same number of reps. Adjust to feel.

Practical tips

  • Hydration: pick one bottle colour and mark with tape so there’s no guesswork at aid stations.
  • Leg activation: a short fartlek the day before keeps legs responsive without fatigue.
  • Rain readiness: wear a lightweight, water-resistant jacket and log some miles on slippery surfaces beforehand.

Closing note

Run this fartlek today and dial paces in the Pacing app to your marathon target.

References

Inspired by Seth James DeMoor

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