...It runs on any browser and supports a great variety of tile layers (Open Street Map and Google Satellite among others).
As a php+mysql service can be installed on any web server (i.e. your bike-team site!).
It's free, open source, portable and cross-platform.
*** NB ***
- Check the "allow unknown sources" option on your device security settings to setup on Android.
...In Android and iOS applications, this plugin displays native Google Maps views, which is faster than Google Maps JavaScript API v3. And it even works if the device is offline. In Browser platform, this plugin displays JS map views (Google Maps JavaScript API v3). It should work as PWA (progressive web application), but the device has to be online.