Speedometer : GPS speed tracker

Speedometer is a GPS based app that provides speed, distance, and elapsed time for Apple Watch and iPhone. Simple to use. Suitable for running, biking, boating, or hiking. Can also be used by passengers in trains, buses, or cars. Includes a map display option for both Watch and iPhone as well the ability to set either metric or Imperial units for distance and speed display.
Available In-App Purchase provides an upgrade that adds audio announcements that activate when you have reached the speed, distance, or time marks that you set.