I have been running for 2 years now (can't believe it) I have a 5K, 7.5K and a 10K route. Until recently I thought I was running 5K comfortably in 34 mins or speedily in 32mins. 7.5K in 55 mins and 10K in 1hr 8mins all tracked through Sports Tracker. I have always been a little disappointed that I am a slow runner but have to remind myself at least I am a runner. In February I treated myself to a new android phone. I have now noticed even though using the same Sports Tracker app my 5K route now appears to be only 4.3K so my 5k time is really 37 mins. My 7.5K run was really 6.6k so my new 7.5K time is really 59mins.I can't help feeling disappointed but can only presume my new phone has a more accurate GPS signal. I have now had to add loops onto each route to cover the correct distances.