Heres a good application for your Windows Phone 7. XDA member amaric presents GPS Speedometer, with it you will be able to determine your current speed in Kilometers or Miles per hour, altitude in Meters or Feet and the distance made from point to point while recording your max speed. The free version will work for an unlimited time with all the features but it will show ads.

You can get it from the market.

Originally posted by amaric

[APP] GPS Speedometer -[R]- 03/24/2011 -[V]- 1.4

Name: GPS Speedometer

GPS Speedometer is application that shows your current speed (KPH or MPH), altitude (meters or feet) and distance traveled. It has scale for running, cycling, driving and even flying, and records your top speed for every activity.

There is also a free version which has all the features but with ads.

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