Started using MotionX-GPS from the AppStore as a running aid. Records my distance, top speed, average speed, total time, and records the route to google maps!
Looks like this:
Richard created a track using MotionX-GPS on the iPhone
Run around work.
Name: Track 003
Distance: 7.02 kilometers
Elapsed Time: 38:28.2
Avg. Speed: 10.9 km/h
Max Speed: 16.0 km/h
View in Google Maps (expires Aug 29, 2009 2:59 AM PDT)
http://maps.google.com/?t=p&z=15&ll=...a-92fb27c280f9