Current trails at Ferretti Trails – (Long Gulch)Ridge trail Out & Back trail Tap 5 trail(mtn bikes have right of way). Click on the links to see the individual trail maps.
Are you looking for more trails around the Groveland/Yosemite area? AllTrails is a good resource and there are mountain biking trails on MTBProject and Trailforks. A big thanks to AllTrails, MTBProject and Trailforks for making great resources for finding trails. You can download their android or iphone app to get access to trails on your phone and you can download the GPX trail files to upload into your own GPS system.