Another mapflixer video. This is the first 12 minutes of the Park University sprint. The course went underground at about the 3:30 mark. In the race, you turned the map over and used a second map. In the video, I keep showing the above ground map and it gets a bit screwy becuase the GPS track doesn't work underground and you can't see the actual map. I should have turned the map off in the video when I went underground.
https://youtu.be/EYuTHITGKF0
The stabilization doesn't seem to work as well underground. Maybe I was running less smooth or maybe the lower light levels have something to do with it. I ran with the GoPro on a chest mount.
The GPS track doesn't fit very well on the first leg. I think that's because I didn't give my watch much time once it got the satellite signals and the high buildings might cause some trouble. I remember reading (maybe on WorldofO?) that to get the best GPS track, you should give the watch a few minutes sitting still to acquire the satellite signals before you start moving. I don't know if that's true, but it seems like an easy thing to do.