GPS Speedometer is application that shows your current speed (KPH or MPH), altitude (meters or feet) and distance traveled. It has customizable scale for running, cycling, driving and even flying, and records your top and average speed, trip time for every activity. You can set a speed limit with optional audio alert.
Trial version will work for unlimited time with all the features but it will show the ads.

*** Version 2.4.0.9 ***
Minor bug fixes and fixed problem with setttings not saving on WP 8.1.

*** Version 2.4.0.0 ***
Removed AdMob ads that are cause of application crash

*** Version 2.3.9.0 ***
Fixed some bugs

*** Version 2.3.6.0 ***
Open current location in HERE Maps application (WP8 only)
Fixed some bugs

*** Version 2.3.0.0 ***
1. Speed limit
2. Custom scale for analog speedometer
3. Animated help
4. Bug fixes

*** Version 2.0.0.0 ***
1. Compass

*** Version 1.81.0.0 ***
1. Separate resetable average speed digital and analog indicators for every activity
2. Separate resetable trip timer for every activity
3. Orientation lock


*** Version 1.7.0.0 ***
1. New color themes options
2. Updated help page
3. Fixed some bugs

*** Version 1.6.0.0. ***
1. Landscape support
2. Supersized digital speedometer
3. Altitude is moved for better visibility
4. Color indicator for horizontal and vertical accuracy
5. Fixed "not saving color themes" and other bugs

*** Version 1.5.0.0. ***
1. Color themes
2. Heads-up mode
3. Reward system (explained on help page)
4. Help page - pictorial, textual, tips, privacy

*** Version 1.4.0.0. ***
Fixed crashing issue on some devices

*** Version 1.3.0.0. ***
1. Separate resetable top speed digital and analog indicators for every activity
2. Two separate resetable distance meters
3. Help page
4. Increased visibility of inactive buttons