u/Different-Rest-6841

Hello fellow runners,

I've trained for my first marathon for 5 months or so.

I've been using chat gpt/Claude as my running coach but want to check - how do I figure out what my strategy should be on race day?

Is there a particular heart rate that I should stay at for the first half for instance and ensure I keep below for the entirety of the race?

For reference my max heart rate I believe is around 190bpm. Easy pace is around 6:45/km. Longest run is 33km at 6:23/km average pace and average heart rate of 160bpm.

I also find my calf takes like 6-7km to warm up which is super annoying as it severly limits my pace (physio ongoing for this)

Any help much appreciated!