Distance from San Diego to Las Vegas: 503 km

California → Nevada · Interstate 5 (San Diego Freeway)

The night-time return from San Diego, California, to Las Vegas, Nevada, deserves its own protocol: anti-glare driving glasses on, dashboard light dimmed to the lowest setting, and well-lit truck stops pre-identified as candidate rest stops. The 503 km (313 miles) of Interstate 5 (San Diego Freeway) and the 4h 47m of driving cross zones with patchy cellular coverage during the small hours. Approximate refuel cost on the way back stays at $42.04 for the 45.7 liters (12.1 gallons) consumed. Forecast reimbursement for the night leg holds at $216.29 applying the prevailing $0.43/km — without an automatic night premium in the IRS standard mileage rate (2025) table. If the company pays night-driving overtime, open a separate line on the Clara receipt: the payroll integration already recognizes the entry.

Other routes from San Diego