Course & Aid Stations Interactive Map:
Topo Maps+ (iPhone only) is the recommended app to use during the race. Here is the link to the Grizzly 50 map/GPX you can download to your phone in the Topo Maps+ iPhone app and run in airplane mode during the race. Make sure to download the area as well!
Basic Course Map Image:
*NOTE* This vertical profile image is exaggerated below but the vertical gain & loss is not.