Taxi fare in San Francisco from 345 Stockton Street San Francisco, CA 94108 to 41 Wharf Road., Bolinas, CA 94924

If you are going 15 miles beyond the city limits, the final fare will be one hundred fifty percent (150%) of the rate displayed in the meter.
You should be careful and use only legal taxicabs.Here's a guide on How to Spot a Real San Francisco Taxicab (PDF)
The passenger pays for any bridge tolls.
Drivers can ask for an advanced payment if you are going out of San Francisco (except if going to SFO and Oakland Airport)
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