Distance between cities › USA › California › Belmont, CA › Distance from Belmont to Portola Valley Book Hotels

Distance from Belmont, CA to Portola Valley, CA

Distance

13 mi

Time

24 minutes

Gas Cost

$2 - $4

There are 9.67 miles from Belmont to Portola Valley in southeast direction and 13 miles (20.92 kilometers) by car, following the CA 84 route.

Belmont and Portola Valley are 24 minutes far apart, if you drive non-stop .

This is the fastest route from Belmont, CA to Portola Valley, CA. The halfway point is Atherton, CA.

Belmont, CA and Portola Valley, CA are in the same time zone (PDT). Current time in both locations is 4:40 pm.

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Lowest Price Rental Cars in Belmont, CA

Planning on renting a car to go from Belmont, CA to Portola Valley, CA? Here there are some offers to rent a car in Belmont, CA

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Belmont »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 0.52 gallons of gas to cover the route between Belmont, CA and Portola Valley, CA.

The estimated cost of gas to go from Belmont to Portola Valley is $2.89.

During the route, an average car will release 10.22 pounds of CO₂ to the atmosphere. The carbon footprint would be 0.79 pounds of CO₂ per mile.

Average USA gas price used for calculation is $5.54 per gallon of regular gas. Price last updated on March 18, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Belmont, CA and Portola Valley, CA

If you want to meet halfway between Belmont, CA and Portola Valley, CA or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 37.464954 and -122.224594, or 37º 27' 53.8344" N, 122º 13' 28.5384" W. This location is 6.49 miles away from Belmont, CA and Portola Valley, CA and it would take approximately 12 minutes to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Atherton, CA, situated 6 miles from Belmont, CA and 8 miles from Portola Valley, CA. It would take 11 minutes to go from Belmont to Atherton and 14 minutes to go from Portola Valley to Atherton.