Compiled and reviewed by the US Trip Planner planning team at COD Solutions Oy · Last reviewed Apr 19, 2026 · Editorial standards
Drive Time
36m
Distance
18.4 mi
30 km
Drive Score
6/10
Good drive
Same Day?
Yes, doable
Fuel Cost
$3
one way
EV Charging
Unknown
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Somerville, MA
Wikimedia Commons
Sudbury, MA
Wikimedia Commons
Somerville, MA to Sudbury, MA is 18.4 miles and takes about 36m via Boston Post Road, with a fuel budget near $3 and enough daylight to finish in a day. This drive stays within Massachusetts, traveling from the Northeast region to the Northeast region. It's a local journey that feels more like navigating town than covering significant distance. Given its short length and duration, this route is ideal for a single-day excursion, offering a straightforward trip between two points in the Bay State.
| Road | Distance | Duration |
|---|---|---|
| Boston Post Road | 4.8 mi | 7m |
| Old Sudbury Road | 3.1 mi | 5m |
| Belmont Street | 2.6 mi | 4m |
| Main Street | 2.1 mi | 3m |
| Weston Street | 1.3 mi | 2m |
| Brattle Street | 1.1 mi | 2m |
| Warren Street | 0.8 mi | 1m |
| School Street | 0.4 mi | 1m |
Step-by-step road directions between Somerville, MA and Sudbury, MA.
Start on this road
Turn left onto Highland Avenue
Turn right onto School Street
At end of road, turn right onto Somerville Avenue
Turn left onto Dane Street
Turn right onto Washington Street
Continue on Kirkland Street
Turn left onto Quincy Street
Turn right onto Cambridge Street
Continue on Cambridge Street
Turn left onto MA 2A
Turn right onto Garden Street
Turn left onto Mason Street
Turn right onto Brattle Street
At end of road, turn right onto Mount Auburn Street
Keep slight right at fork onto Belmont Street
Continue on Belmont Street
Continue on Warren Street
Turn right onto US 20
Turn left onto US 20
Continue on US 20
Continue on US 20
Turn right onto MA 27; MA 126
Continue on MA 27
Continue on MA 27
Arrive at destination
5 decision points cluster between mile 0 and 3.4 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
Turn left onto Highland Avenue
Navigation decision point
Turn left onto Dane Street
Lane positioning matters here
Turn right onto Garden Street
Lane positioning matters here
Turn left onto Mason Street
Lane positioning matters here
Keep slight right at fork onto Belmont Street
Highway fork - watch signs carefully. Lane positioning matters here
Regular Gas
$2.94 one way
$5.89 round trip
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.43 | $3.21 | $6.42 |
| premium | $4.82 | $3.49 | $6.99 |
| diesel | $5.61 | $4.06 | $8.12 |
No toll roads detected on this route.
Drive Cost (one way)
Fuel
$3
Estimated CO2 emission: 6.4 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $2 in charging · 0 stops · 67% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 5.5 | 0 | $1.93 | $0.88 |
| Efficient EV | 4.6 | 0 | $1.61 | $0.74 |
| EV Truck/SUV | 7.4 | 0 | $2.58 | $1.18 |
Gas CO2
6 kg
EV CO2
2 kg (67% 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.
Current conditions at both ends of the drive.
Origin
Late night in Somerville on Sunday
Local time
12:18 AM
EDT
Current temp
49°F
Mostly Cloudy then Areas Of Fog
Destination
Late night in Sudbury on Sunday
Local time
12:18 AM
EDT
Current temp
64°F
Unavailable
Time zone
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
The weather snapshot is not static. If you are leaving later, give both cities one more quick forecast check before departure.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
This route is characterized as a 'Turn-heavy local drive,' with no highway share at all. You'll be navigating local roads for the entire 18.4 miles. The longest uninterrupted stretch you'll encounter is 4.8 miles along Boston Post Road. Expect frequent turns and a pace that reflects local traffic conditions rather than highway speeds. The road surface and environment will likely shift as you move from more urbanized areas to potentially more suburban or semi-rural settings.
Expect a hands-on drive with frequent turns and local roads rather than long highway stretches. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes early in the drive near Highland Avenue.
Focused - busy navigation packed into a short drive
Balances navigation complexity with total wheel time.
This is a short but busy drive. With 17 decision points packed into just 18.4 miles, you will need to pay attention to lane changes and exits — but the whole thing is over in 36m.
Where does it get tricky?
The main spots that need attention: near the start (Highland Avenue): Navigation decision point; at 0.5 miles (Dane Street): Lane positioning matters here; at 1.7 miles (Garden Street): Lane positioning matters here.
Older Bostonians might still derisively call it "Slummerville", but today that tired old moniker couldn't be further from the truth. Packed with upwardly mobile professionals and longtime residents, Somerville is often voted an "All-America City" and the best-run city in Massachusetts. It would seem civically engaged folks can achieve uncommon results; and Somerville fosters an environment of cooperation like no other. Its 81,000 residents (2020) are quick to enjoy the fruits of their artistry, and you'll find top notch options for dinner, drinks, and dancing all in abundance within Somerville's borders. Lurking just to the south, big brothers Boston and Cambridge provide options and opportunities for many of Somerville's creative class residents.
City content from Wikivoyage (CC BY-SA 4.0) and Wikidata (CC0).
Weekend Trip
Doable as a same-day drive at 36m. Total distance: 18.4 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
36m drive, comfortable solo distance.
EV Driver
0 DC fast chargers along the route. Coverage: unknown.
Scenic Drive
Mostly surface roads route profile with national parks nearby.
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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