Nokia Sports Tracker holiday idea - track your sled rides with GPS

I have some holiday fun with the kids today as we used Nokia Sports Tracker and my Nokia N95 to track and save our sled rides down the slopes. Before we started down the slope I simply fired up sports tracker, got a GPS signal, slipped it into Megan's pocket and away she went. Her average speed up and down the slope was 4.8 kmph (slowed somewhat by the walk back up the hill1) and her maximum speed down the slope was a whopping 26.1 kmph (about 16 mph)... loads of fun!
See http://sportstracker.nokia.com - you can find my tracks on user "gisuser"