I also bet no

Max HR is set to 185bpm, Z2 is set to 60-70%, so upper limit is at 130. That is correct.

According to my Garmin my Z3 starts at 131BPM. According to MAF my heart rate should be below 142BPM. So even 10BPM less is in my Z3.

I’m wondering about that the maf max HR is in Z3 and not in Z2. I considered Z2 as low heart rate, not the value that I got from the MAF formula anymore.

Thanks, so I want to an lactate threshold test to determine my correct zones.

Btw you can change on your garmin to use heartrate instead of pace ad targets for runs.

Why do you need to host 2 search engines?