I used the Runkeeper app to measure 2.5K out and back on a bike path along a river alongside where I live. It was very windy heading north for the first 2.5K and I felt like that impacted my pace but returning back to the start, traveling south was easier. I only just recently started running again after a hiatus from it and it feels so wonderful to be back. Since this distance is a bit of a challenge for me at this stage, I started chanting strong body, quiet mind, eagerness vital and affectionate heart silently during the race. I really liked the way that felt!