The drive from Bozeman to San Diego is a scenic 1,900-kilometer journey along I-15 South. This route takes you through the beautiful landscapes of Montana, Idaho, Utah, and California. The drive typically takes about 19 hours, making it a multi-day trip.
Total Distance: 1,900 km driving, 1,600 km air distance.
Stop in Las Vegas to break up the long drive.
Winter and spring are the most pleasant times for this drive.