Decided to do a long slow run today, ended up getting 15K. I have known for a while that my GPS watch, the Forerunner 220 runs a bit short on distance - and therefore pace - parkrun on my phone records 5k pretty much bob on, my Garmin is always 4.89k, so I ran 15K according to the 220 and came out as 15.25K on my phone. I used to be OK with it as I felt that at least its underestimating, so come to parkrun or a race and I go faster than I expect, and I prefer to be an underestimate as it makes me want to go faster. But now its just annoying as I always feel like checking my pace but I know its pointless.. Going to try a hard reset to see if anything improves, then might start leaving the watch. Today I found out about Strava, so can try that out on my phone. What I do get extra from the watch is cadence, and that is pretty accurate I ASSUME as it is measuring time accurately just not distance. Not sure if strava gives cadence too, my default tracking app on my phone doesn't (even though it counts steps).
Will report back regarding the watch reset in-case anyone is interested!
Have been looking at new watches too but would want to wait till the new updated wrist based HR stuff on the FR935 is put on cheaper models, I saw a prediction for such watches to be released around August. Would also have to track distance better than my current 220 obviously!