Boulder City to Simi Valley: Road Trip Guide & Distance

How far is Boulder City from Simi Valley?

The distance from Boulder City to Simi Valley is 252.5 miles (406.3 km) as the crow flies. Simi Valley is located WSW of Boulder City. By car, the driving distance is approximately 315.6 miles, taking about 6h 21min. A direct flight would take roughly 1h 0min. Both are located in United States — Boulder City in Nevada and Simi Valley in California.

For a drive of this length, it's recommended to plan at least one quick rest stop to stretch your legs and grab a coffee. 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.

Coordinates come from public place data for Boulder City and Simi Valley. The driving distance is estimated from straight-line distance with a road-factor model, so confirm the route in your navigation app. Fuel, flight, bus, and train values are planning estimates and can change by date, provider, road closures, and border rules.