Glympse is an application that specializes in real time location sharing. A free version is available with features that are sufficient for hikers.
Glympse is a fast, free, and simple way to temporarily share your real-time location with anyone. The tracking is based on GPS, is temporary and secure – and Glympse recipients don’t need to download an app to see the shared location - they will instead receive a link which they can open in any web browser, on their computer or mobile. The web page in the browser will display a map with approximately the last kilometer of the shared trail.