It happens on my longer (for now) rides. Like a continous activity that is ~1 hour no problem. It seems like if I make any stops my garmin watch craps out and just stops logging the activity totally losing it. I lost a few 30-40 mile rides the last few weeks which hugely affects my overall fitness recommendations, not good. How to I prevent this? Do I need to get power meter and link my HR monitor/garmin watch to my bike computer. I am not a numbers or electronic person but hired a coach to keep a leash on me so to speak because I overtrained last year, just got back into riding and never want this to happen ever again.

So how do I keep my Garmin recording the entire activity without stopping or what I am doing to turn it off despite not turning it off?