I have used the Forerunner for running for over a year while training for endurance races. It is easy to use and great for post run analysis using the free Garmin Training Center application. After your run you can look at your location, pace and elevation over time.Unfortunately, I have found the distance of the GPS to be off by about 5%. That does not sound like much but it has a significant effect on pace calculations.I have also had real trouble with reception. Many of my runs are on "Rail Trails" which are often cut into hills and overshadowed with trees. The Forerunner does not consistently work well on these trails.I also have reception problems when running in overcast weather and sometimes when running on trails under high voltage power lines.The Forerunner is a great tool when reception is good. Unfortunately reception has not lived up to my expectations so I am carrying it less and less.