MacOS 10.9's Maps and GPS

Recently, I upgraded my late-2012 slimline iMac from MacOS 10.8 "Mountain Lion" to MacOS 10.9 "Mavericks". Also recently, my parents replaced an aging white MacBook with a refurbished late-2013 13-inch MacBook Pro with Retina Display. Now both machines run on MacOS 10.9.

One new feature for both my parents and myself is Maps. We occasionally use a handheld DeLorme Earthmate PN-40 GPS receiver for travel (finding key points, directions, etc.), as well as recording needed coordinates for recreational trails inspections and maintenance work bees and other activities. DeLorme does not provide GPS interface software for MacOS. We have, however, used Google Earth in the past to load GPX files off of the PN-40's SD card.

Short of loading Microsoft Windows onto our respective computers, is there a way to extract GPS waypoint coordinates and GPX route files from the SD card to display and manipulate in MacOS 10.9's Maps?

Also: if there a way to manually type in GPS coordinates into Maps to display and/or record points of interest for future reference and use in e-mail communiqués, newsletters, reports, etc.?

Thanks in advance.