I'm not sure if this is the right section of the forum, please move if not. It's about me trying to get fitter through cycling.
I'm a 43 year old male, 86kg and 190cm tall (that's 13st 9lb and 6'3"), my Average Resting Heart rate gets recorded at ~60bpm (wearing vivoactive 3 long term). This is the year that I am would like to crack being able to go for rides of more than 10 miles, build up endurance, I want to go out for 2-3 hour rides for 30+ miles. I'm heading out with my friend each ride, which helps with motivation, one I notice that whenever we hit an incline, he gradually passes me, but he seems to power it in a high gear, where I'm spinning on a low gear because my legs can no longer push in a higher gear.
One constant I have always noticed is whenever I go for bike rides, most of it shows as zone 5. What I've never been able to work out is whether I am that unfit (it's possible) or whether it's a device thing. (Using a Garmin Vivoactive 3 - Elevate HR.)
When I go for a decent Bike Ride it's like this. This was a ride yesterday of 15 miles over an hour, no crazy climbing. It's only my 3rd ride of the year on my road bike.
Z5 > 161
Z4 = 143 - 160
The ride before was shorter, 9 miles, but similar effect.