I use LocaToWeb which is a real time tracker that enables my family to follow me while riding. The app gives you duration, speed and altitude directly in the display as well as you position with track line. Your wife can pick up the track from on http://locatoweb.com and watch you live. There she can see your exact location and track line as well as duration, speed and altitude.
The web site also stores your tracks in an archive under your account. Using the app you can be as anonymous as you like since you track under an Alias, and you can even set the tracks to be private (not visible to everyone). Can also capture and upload photos.
Versions for Android, iPhone and Windows Phone.