Boulder to San Diego: Road Trip Guide & Distance
How far is Boulder from San Diego?
The distance from Boulder to San Diego is 830.6 miles (1336.7 km) as the crow flies. San Diego is located WSW of Boulder. By car, the driving distance is approximately 1089.9 miles, taking about 19h 14min. A direct flight would take roughly 2h 10min. Both are located in United States — Boulder in Colorado and San Diego in California.
This is a serious multi-day road trip! We strongly recommend breaking this journey up with an overnight stay to ensure you arrive safely and refreshed. Since you'll be heading mostly West, pack a good pair of sunglasses if you plan to drive during the late afternoon to avoid the harsh sun glare. For a trip of this distance, flying is significantly faster. However, driving offers the flexibility to explore stops along the way.
Coordinates come from public place data for Boulder and San Diego. The driving distance uses an OSRM road-route result when route data is available. Fuel, flight, bus, and train values are planning estimates and can change by date, provider, road closures, and border rules.
How to Get from Boulder to San Diego
Suggested Stops Between Boulder & San Diego
- 1744 mi
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- 3744 mi
- 4585 mi
- 5397 mi
Quick Facts
Did You Know?
- At walking speed (3 mph), it would take about 277 hours of non-stop walking
- By bicycle at 12 mph, the journey would take roughly 69 hours
- You could travel this distance about 30 times to circle the Earth's equator