245, 1.5 yrs old. Last pm, mile repeats grossly off on distance - so pace recorded was approx 1 min/mile slow. At end of run, match was over a half mile off in distance on a 10 mile run. It seemed worse first half of rum then second half. What do you think - satellite problem, or is watch getting used up and i need a new one. Obviously if pave /distance are not more accurate. It is non-functional.
Look at the course map generated on Garmin Connect. Can you see where the recorded track deviated from your actual route? As JonH mentions, signal reflections from buildings can generate big GPS errors…
Yeah, I've had that happen occasionally with my FR245 and previously with my FR220. But I'd estimate less than once per 1-2 years. As you've probably guessed, it seems to have lost the satellite connection…
thanks guys. the map route is fascinatingly screwed up. I know the benchmark because i have run that 10 mile loop countless times. it is a running trail around a lake that has more trees on the west side, but i run there all the time with little disruption in the watch - nothing like yesterday. there are no buildings. Picture one is a screenshot of the route from last week with the watch working properly. screenshot two is last night, where it doesnt even record the west side of the lake, though it was giving me te inaccurate splits while i was over there. I am using GPS/Glonass as my satellite setting. it has me running in a dead straightline across the water until about mile five. ha! really weird. this is a one off last night. I thought about halfway through run it corrected and started to work. but that is pretty bad.
