- Greg Cayea, Heather Thompson
- 58,135.87 kilometre(s)
- United States (New York)
The longest journey by car in a single country is 58,135.87 km (36,123.95 mi), and was achieved by Greg Cayea and Heather Thompson (both USA) who toured throughout the United States from 11 July to 9 November 2016.
Greg and Heather attempted this record to explore the vast United States. They were interviewed on Facebook Live on the Guinness World Records Facebook page in October of 2016.