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Trip from San Martin, CA to San Francisco, CA

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Compiled and reviewed by the US Trip Planner planning team at COD Solutions Oy · Last reviewed Apr 26, 2026 · Editorial standards

Drive Time

1h 28m

Distance

73.1 mi

118 km

Drive Score

7/10

Good drive

Same Day?

Yes, doable

Fuel Cost

$17

one way

EV Charging

Unknown

Best Time to Leave

Save up to 21 min
4 AM
1h 21m ★
6 AM
1h 28m
8 AM
1h 42m
10 AM
1h 33m
12 PM
1h 31m
3 PM
1h 33m
5 PM
1h 41m
8 PM
1h 24m

Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.

Downtown San Martin, CA, CA

San Martin, CA

omar Basly

consolidated city and county in California, United States

San Francisco, CA

Wikimedia Commons

Trip Overview

San Martin to San Francisco is 73.1 miles and takes about 1 hour 28 minutes via US 101, with a fuel budget near $17 and enough daylight to finish in a day. This is a straightforward drive connecting two points within California's Pacific Coast region. Given its relatively short distance and predominantly highway profile, it's well-suited for a same-day trip. You'll be on major roadways for almost the entire journey, making it a practical option for getting between these two locations with minimal fuss.

Main Roads

Road Distance Duration
US 101 57.7 mi 1h 8m
South Valley Freeway 13.7 mi 15m
East San Martin Avenue 0.8 mi 1m
Octavia Boulevard 0.5 mi <1m
Market Street 0.3 mi 1m
Longest stretch: US 101 — 57.7 mi, about 1h 8m

Turn-by-Turn Driving Directions

Step-by-step road directions between San Martin, CA and San Francisco, CA.

1

Start on East San Martin Avenue

0.8 mi · 1 min · East San Martin Avenue
Use the straight lane.
2

Take the ramp

0.3 mi · 34 sec
3

Merge onto US 101

14 mi · 15 min · South Valley Freeway
Use the slight right lane.
4

Keep slight left at fork onto US 101

22 mi · 25 min · US 101
Use the straight / slight right lanes.
5

Keep slight left at fork onto US 101

36 mi · 42 min · US 101
Use the slight left lane.
6

Continue on Octavia Boulevard

0.5 mi · 42 sec · Octavia Boulevard
Exit 434B Toward Octavia Boulevard, Fell Street Use the straight / slight right lanes.
7

Turn right onto Market Street

0.1 mi · 31 sec · Market Street
Use the right lane.
8

Keep slight right at fork onto Market Street

0.2 mi · 35 sec · Market Street
9

Arrive at destination

Market Street

Where to Stop

Rest stops, refuel points, and overnight suggestions along this route.

city in San Mateo County, California, United States

Mid-route town

Meal stop

Foster City, CA

37 mi into the route

Best for: Lunch, fuel, and a longer reset

This sits close to the middle of the route, so it works well for the longest stop of the day.

Pacing Suggestions

Seven Trees, CA

Fuel and coffee

A short stop after about 16 miles helps settle the day before fatigue starts building.

Los Altos, CA

Meal break

The midpoint is around 36.6 miles from San Martin, CA, which is a good place for a longer meal and fuel stop.

These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.

Heads-up: tricky spots

5 of 8

5 decision points cluster between mile 1 and 72.8 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.

5
1 mi into trip | ~2m in | US 101 / South Valley Freeway

Merge onto US 101 / South Valley Freeway

Merge point - match speed before joining. Lane positioning matters here

Use the slight right lane.
6
14.7 mi into trip | ~18m in | US 101

Keep slight left at fork onto US 101

Highway fork - watch signs carefully. Lane positioning matters here

Use the straight / slight right lanes.
6
36.6 mi into trip | ~43m in | US 101

Keep slight left at fork onto US 101

Highway fork - watch signs carefully. Lane positioning matters here

Use the slight left lane.
5
72.4 mi into trip | ~1h 26m in | Octavia Boulevard

Continue onto Octavia Boulevard toward Octavia Boulevard, Fell Street

Lane positioning matters here. Multiple destination signs - pick the right one

Use the straight / slight right lanes. Exit 434B Toward Octavia Boulevard, Fell Street
5
72.8 mi into trip | ~1h 26m in | Market Street

Turn right onto Market Street

Lane positioning matters here

Use the right lane.

Fuel & Cost

Regular Gas

$16.57 one way

$33.14 round trip

$5.76/gal 25.4 MPG avg 26 kg CO2
Fuel Type $/gal One Way Round Trip
midgrade $5.96 $17.14 $34.28
premium $6.09 $17.53 $35.06
diesel $5.40 $15.55 $31.10

No toll roads detected on this route.

Drive Cost (one way)

Fuel

$17

Estimated CO2 emission: 25.6 kg one way. Prices: EIA weekly data, 2026-04-20.

Driving Electric?

About $8 in charging · 0 stops · 65% less CO2

Vehicle Type kWh Stops DC Fast Home Charge
Average EV 21.9 0 $7.68 $3.51
Efficient EV 18.3 0 $6.40 $2.92
EV Truck/SUV 29.2 0 $10.23 $4.68

Gas CO2

26 kg

EV CO2

9 kg (65% less)

This trip is well within single-charge range for most EVs. No charging stops needed if you start fully charged.

DC fast charging avg $0.35/kWh. Home charging avg $0.16/kWh. US grid CO2: 0.39 kg/kWh.

Travel Intel

Current conditions at both ends of the drive.

Forecast as of Apr 24, 2026

Origin

San Martin, CA

Evening in San Martin on Saturday

Local time

6:21 PM

PDT

Current temp

46°F

Unavailable

Live forecast

Destination

San Francisco, CA

Evening in San Francisco on Saturday

Local time

6:21 PM

PDT

Current temp

74°F

Unavailable

Live forecast

Time zone

Same local time

Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.

Temperature spread

28 degrees warmer at arrival

A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.

Road read

1h 28m on the road

Use the two city cards together: check the sky where you start, then compare it with the local time and temperature at arrival.

Weather data from the National Weather Service. Conditions may change; check closer to your travel date.

What kind of drive is this?

This route is 98% highway, meaning you'll spend nearly all of your time on freeways. The longest continuous stretch on a single highway is 57.7 miles on US 101. You can expect the transition from surface roads to the highway to be brief, with the majority of your time spent on high-speed travel. Expect frequent exits and merging traffic as you approach the San Francisco area.

98% highway — fuel and pacing are the main things to plan.
9 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 57.7 mi on US 101.

How Hard Is This Drive?

7/10

This is a straightforward highway drive that stays mostly on US 101 and South Valley Freeway. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 1 miles in near US 101 / South Valley Freeway.

Driving Effort 7/10

Demanding - plan breaks and stay ahead of the key maneuvers

Balances navigation complexity with total wheel time.

This drive requires moderate attention. Across 73.1 miles you will encounter 8 spots where lane choice or exit timing matters. Not difficult for experienced highway drivers, but worth previewing the tricky sections before you go.

Where does it get tricky?

The main spots that need attention: at 1 miles (US 101 / South Valley Freeway): Merge point - match speed before joining. Lane positioning matters here; at 14.7 miles (US 101): Highway fork - watch signs carefully. Lane positioning matters here; at 36.6 miles (US 101): Highway fork - watch signs carefully. Lane positioning matters here.

About the Cities

Starting in San Martin, CA

Full guide →

Top landmarks

  • Wings of History Museum

Arriving in San Francisco, CA

Full guide →

“Frisco” · Founded 1776

The centerpiece of the Bay Area, San Francisco is one of the most visited cities in the world, and with good reason. The cultural center of northern California, San Francisco is renowned for its mixture of scenic beauty and unique culture that makes it one of the most vibrant and desirable cities in the nation, if not the world. Sandwiched between the San Francisco Bay and the Pacific Ocean on a small square of land seven miles (11 km) on each side, San Francisco offers a wealth of treasures for the visitor, from the windswept and often foggy bay to the steep hills lined with Victorian homes that overlook the spectacular scenery of the city.

Top landmarks

  • Golden Gate Bridge — suspension bridge on the San Francisco Bay
  • Alcatraz Island — island in San Francisco, California, United States of America
  • San Francisco–Oakland Bay Bridge — suspension bridge connecting San Francisco and Oakland, California, USA

City content from Wikivoyage (CC BY-SA 4.0) and Wikidata (CC0).

Who Is This Route For?

Weekend Trip

Doable as a same-day drive at 1h 28m. Total distance: 73.1 miles.

Family Friendly

Moderate complexity with 0 natural rest stops along the way.

Solo Traveler

1h 28m drive, comfortable solo distance.

EV Driver

0 DC fast chargers along the route. Coverage: unknown.

First-Time Driver

Mostly highway driving (98%). Some complex stretches to watch for.

Frequently Asked Questions

The longest stretch is about 57.7 miles on US 101. The full list of main roads is in the Roads section above.

It helps. This route has a higher-than-average number of complex decision points, which get harder in the dark. If the last hour of the trip is on surface roads or mountain grades, aim to arrive at San Francisco, CA before sunset when you can. Check the Trip Plan for departure windows that land you in daylight.

Yes. At under 2 hours behind the wheel, this works well for families — plan one quick stop if you have younger kids.

The main spots that need attention: at 1 miles (US 101 / South Valley Freeway): Merge point - match speed before joining. Lane positioning matters here; at 14.7 miles (US 101): Highway fork - watch signs carefully. Lane positioning matters here; at 36.6 miles (US 101): Highway fork - watch signs carefully. Lane positioning matters here.

Yes — San Francisco Maritime National Historical Park, Rosie the Riveter WWII Home Front National Historical Park and Golden Gate National Recreation Area (5 total within detour distance). See the National Parks section for detour distances and tips on detours.

Yes. A round trip is manageable in a single day if you plan a break at San Francisco, CA before heading back.

How this page is built

Compiled by the US Trip Planner planning team at COD Solutions Oy from open government datasets — OSRM over OpenStreetMap for geometry, EIA for fuel prices, and NPS for national parks. See our methodology for refresh cadence and limitations.

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