onX Offroad: The Official GPS Mapping Partner of King of the Hammers
We’re thrilled to have onX Offroad back as the Official GPS Mapping Partner for the 2025 OPTIMA King of the Hammers Presented by Ford Performance.
The official 2025 King of the Hammers race course is now live on the onX Offroad app and has been added to the app’s Basemaps for the Johnson Valley area. Participants will be able to use this as a tool to navigate around the lakebed and through Hammertown and find the best spectator locations on race day.
After downloading onX Offroad, users can search for “Johnson Valley OHV” to see the race course, as well as view the “streets” of Hammertown, pit locations, mile markers, spectator viewing areas, and start and finish lines. The map can also be marked up to make it their own, creating routes and dropping waypoints that indicate camp spots, meet-up areas, and destination points – and easily share them with friends.
Before you make the trip to Johnson Valley, onX Offroad encourages participants to download the area’s offline maps so they can better navigate the desert, even when out of cell reception.
King of the Hammers participants can take advantage of a 40% discount on onX Offroad subscriptions, of both Premium or Elite levels.
To redeem, enter the code KOH25 at checkout at the
onX Offroad website.