Garmin Trailhead Series

The Garmin Trailhead Series adds detailed preloaded mapping to a compatible Garmin GPS device on a microSD/SD card.Available region options: Pacific Crest Trail, Appalachian Trail, Arizona National Scenic Trail, Pacific Northwest National Trail.Works with aera® 500 aera® 510 aera® 550 aera® 560 aera® 796 Alpha® 100 Alpha® 200 Alpha® 200 Plus Alpha® 200i Alpha® 300 Alpha® 300i Astro® 320 Plus additional compatible Garmin devices.