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Instinct versus Data

How I Ran Two Marathons Differently

Dec. 19, 2024 -

Earlier this month I ran the Valencia Marathon (42KM), just six weeks after finishing my first ever marathon in Amsterdam. I used two different approaches for these races: running on feeling and running on data. The experience differed greatly, let me explain it in this blog post.

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Approach A: I could not maintain the 'nice feeling pace', causing a mid-marathon crash (as shown in post race data)
Approach A: I could not maintain the 'nice feeling pace', causing a mid-marathon crash (as shown in post race data)
Approach A: You can see my heartrate peaking mid-marathon, way too high to be durable; by slowing down I got it back to a workable zone
Approach A: You can see my heartrate peaking mid-marathon, way too high to be durable; by slowing down I got it back to a workable zone
Approach B: Managing the pace for the first 35 kilometers, then speed it up
Approach B: Managing the pace for the first 35 kilometers, then speed it up
Finishing 2 Marathons in 6 weeks (Left: Amsterdam, Right: Valencia)
Finishing 2 Marathons in 6 weeks (Left: Amsterdam, Right: Valencia)

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