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onX Offroad: The Official GPS Mapping Partner of King of the Hammers

2026 King of the Hammer Race Course

We’re thrilled to have onX Offroad back as the Official GPS Mapping Partner for the 2026 Griffin King of the Hammers powered by OPTIMA Batteries.

The official 2026 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 and fans can take advantage of a 50% discount on onX Offroad subscriptions, of both Premium or Elite levels. To redeem, enter the code koh2026 at checkout at the onX Offroad website.

For more information, visit KingoftheHammers.com and follow the event on Facebook, Instagram, and YouTube.

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