When Is Summernats 2025 Dates. The summernats 37 supplementary regulations will be available for entrants closer to the summernats 37 event. Summernats is australia's wildest horsepower party.
The cruise route will close in the above times. It’s that time of year again when all roads lead to canberra, where we’ll get to let our hair down, grab a slushie and ring in the new year at australia’s greatest horsepower.