I normally post in the road forum but thought my question might be more appropriate here.
any of you tri people use the forerunner and notice issues with the distance being off?
I just started running this year and have done some footraces and du's. I've noticed on several
occasions that the distance my GPS says I did is different from the measured race course. I'm sure
there is always going to be some mismatch because the path I run may not be exactly where they
measured the course. But 1/2 mile off over a 10k or 12k course? That seems a bit weird. The last
two races I did were 10k and 12k and in both cases the GPS said I ran 0.4 to 0.5 more than what the
course was supposed to have been.
If it's a certified course, how could the GPS be that far off? I can't imagine that following different line would produce that much of a difference. So what's up with this?
I was trying to analyze some data from today's race when I noticed that it said I did 6.7 miles instead of 6.2 miles (actual course). So now when I go in and try to figure out what pace I was doing for a given segment, I am sure the numbers are going to be off.