My Forerunner 235 comes up about .03 short per mile when running. May not see like a big deal, but over a 5k, that's close to .1 mile. At my pace, that's about 15 secs per mile faster than what the watch shows for pace.
This is apparently common with the 235.
Do other models have the same problem?
I cycle, too, and it seems to be more accurate on the bike and you'd think with 50-60 mi rides, the difference between what it measures and what your actual distance is would be significant, but i'm always really close to the other guys in our group for distance.
Thanks