Greenwich to Old Mystic is 100.6 miles and takes about 2h 12m via I 95, with a fuel budget near $17 and enough daylight to finish in a day. This straightforward trip stays within Connecticut, connecting two points in the Northeast region. Expect a largely efficient drive focused on covering distance quickly. It's a practical choice if you need to get from point A to point B without much fuss, ideal for a single day of travel.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Midpoint
50.3 miles from Greenwich, CT
A natural place for your longest stop of the day
, about 1h 10m into the drive
.
Main Roads
Road
Distance
Duration
I 95
94.6 mi
2h
Forbes Avenue
1.2 mi
2m
Whitehall Avenue
1 mi
1m
Long Wharf Drive
0.9 mi
2m
Frontage Road
0.7 mi
<1m
Field Point Road
0.2 mi
<1m
Arch Street
0.2 mi
<1m
Sound View Drive
0.2 mi
<1m
Longest stretch:
I 95
— 94.6 mi, about 2h
Traffic on I-95
Hour-of-day weekday pattern from 88 FHWA count stations on your route.
Peak
4 PM
~3,470 veh/hr typical
Quietest
2 AM
~523 veh/hr
Peak-to-quiet ratio
6.6×
busier at peak than in the quiet hours
12a6anoon6p11p
Averaged across 35 weeks of 2023 FHWA Travel Monitoring Analysis System data. Weekday hours only (Mon–Fri).
Turn-by-Turn Driving Directions
Step-by-step road directions between Greenwich, CT and Old Mystic, CT.
1
Start on West Elm Street
53 ft·5 sec·West Elm Street
2
Turn left onto Field Point Road
0.2 mi·26 sec·Field Point Road
Use the straight / right lanes.
3
Turn slight left onto Sound View Drive
0.2 mi·23 sec·Sound View Drive
4
Continue on Arch Street
0.2 mi·35 sec·Arch Street
5
Take the ramp
0.2 mi·29 sec
Toward I 95 North: New Haven
6
Merge onto I 95
44 mi·59 min·I 95
Use the straight / slight right lanes.
7
Take the exit
0.2 mi·1 min
Exit 46Toward Long Wharf Drive, Sargent DriveUse the straight / slight right lanes.
8
Turn left onto Long Wharf Drive
0.9 mi·2 min·Long Wharf Drive
Use the straight lane.
9
Continue on East Street
0.1 mi·16 sec·East Street
10
Turn right onto US 1
0.1 mi·9 sec·Water Street
11
Continue on US 1
1.2 mi·2 min·Forbes Avenue
12
Turn right onto US 1
0.7 mi·48 sec·Frontage Road
13
Take the exit
0.2 mi·29 sec
Toward I 95 North
14
Merge onto I 95
51 mi·1 hr·I 95
Use the straight / slight right lanes.
15
Take the exit
0.2 mi·29 sec
Exit 90Toward CT 27: Mystic
16
Keep slight left at fork
392 ft·13 sec
17
Turn left onto CT 27
358 ft·7 sec·Greenmanville Avenue
18
Continue on CT 27
1.0 mi·1 min·Whitehall Avenue
19
Continue on CT 27
0.2 mi·25 sec·Main Street
20
Turn left onto CT 27
506 ft·10 sec·Route 27
21
Arrive at destination
CT 27
Trip Plan
Given the 2h 12m duration, leaving Greenwich in the morning should allow you to reach Old Mystic with plenty of daylight remaining. With no planned stops, you have flexibility, but consider a brief break on I 95 if needed, especially since you'll be on the highway for such a long stretch. The estimated fuel cost is around $17, so ensure your tank is sufficiently full before departing. Keep an eye out for the transition off I 95; the change to local roads like Forbes Avenue marks the final miles.
Morning Departure
Leave by 9 AM and you'll arrive before lunch.
Evening Departure
Even a 4 PM departure gets you there before dark in summer.
You can normally do this drive in one day.
You may only need one short stretch break if traffic stays light.
The halfway point lands around 50.3 miles from Greenwich, CT, or about 1h 10m into the drive.
The longest continuous stretch on this route runs about 94.6 miles.
This is a comfortable same-day trip.
Departure
Before you leave
Start with fuel, water, and navigation already sorted so the first hour feels easy.
First stop
Around 22 miles or 30m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 50.3 miles or 1h 10m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 1h 49m
Traffic, exits, and arrival timing usually matter more near Old Mystic, CT than in the middle of the route.
Before You Leave
+
Open the route before leaving Greenwich, CT so your first major turns are already loaded.
+
Leave with enough water and a charging cable within reach, not packed away.
+
Check your fuel range against the first long segment, especially if you are starting outside city service areas.
Day 1
Settle into the route from Greenwich, CT
This is one driving day of about 100.6 miles and 2h 12m.
Your first comfortable stop window is around 22 miles from Greenwich, CT.
This route can stay practical as a one-day drive if traffic stays reasonable.
The longest stretch is on I 95 for about 94.6 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Place data sourced from public business listings. Hours and availability may vary.
Heads-up: tricky spots
5 of 12
5 decision points cluster between mile 0 and 44.9 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
6
0 mi into trip|~0m in|Field Point Road
Turn left onto Field Point Road
Lane positioning matters here
Use the straight / right lanes.
5
0.7 mi into trip|~1m in
Take the ramp toward I 95 North: New Haven
Navigation decision point
Toward I 95 North: New Haven
5
0.9 mi into trip|~2m in|I 95
Merge onto I 95
Merge point - match speed before joining. Lane positioning matters here
Use the straight / slight right lanes.
8
44.7 mi into trip|~1h 1m in
Take the exit toward Long Wharf Drive, Sargent Drive
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Exit 46
Toward Long Wharf Drive, Sargent Drive
6
44.9 mi into trip|~1h 2m in|Long Wharf Drive
Turn left onto Long Wharf Drive
Lane positioning matters here
Use the straight lane.
Fuel & Cost
Regular Gas
$17.56 one way
$35.11 round trip
$4.43/gal25.4 MPG avg35 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.93
$19.54
$39.08
premium
$5.30
$21.00
$41.99
diesel
$6.18
$24.47
$48.95
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$18
Meals
$25–$50
Total
$43–$68
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 35.2 kg one way.
Prices: EIA weekly data, 2026-10-12.
Driving Electric?
About $11 in charging
· 0 stops
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
30.2
0
$10.56
$4.83
Efficient EV
25.2
0
$8.80
$4.02
EV Truck/SUV
40.2
0
$14.08
$6.44
Gas CO2
35 kg
EV CO2
12 kg (66% 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 Oct 19, 2026
Origin
Greenwich, CT
Morning
in Greenwich on Tuesday
Local time
9:17 AM
EDT
Current temp
63°F
Sunny
NE 7 mph0% chanceLive forecast
Destination
Old Mystic, CT
Morning
in Old Mystic on Tuesday
Local time
9:17 AM
EDT
Current temp
62°F
Mostly Sunny
NE 8 mph0% chanceLive forecast
Seasonal Notes
Summer travel usually means heavier construction, hotter rest stops, and busier weekend traffic around major cities.
Winter travel shortens daylight, so a route that looks manageable on paper can feel much longer after dark.
Holiday weekends tend to make both departure and arrival windows slower than the raw route time suggests.
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
1 degrees cooler at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
2h 12m on the road
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.
National Parks Near This Route
Worth a detour if your schedule allows.
Weir Farm National Historical Park
National Historical Park
Visit the home and studio of America's most beloved Impressionist, J. Alden Weir, and walk in the footsteps of generations of world-class artists. Set amidst more than 60 acres of painterly woods, fie...
11 mi from route
~27 min detour
Free
near mile 13.9
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
This drive is 94% highway, meaning you'll spend most of your time on I 95. The longest stretch on the interstate is 94.6 miles. You'll transition to surface roads, specifically Forbes Avenue and Whitehall Avenue, for the final portion of the trip as you approach Old Mystic. Be prepared for the dense exits and traffic patterns typical of highway driving for nearly the entire route.
94% highway — fuel and pacing are the main things to plan.
21 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 94.6 mi on I 95.
How Hard Is This Drive?
7/10
This is a straightforward highway drive that stays mostly on I 95 and Forbes Avenue. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes early in the drive near Field Point Road.
Driving Effort7/10
Demanding - plan breaks and stay ahead of the key maneuvers
Balances navigation complexity with total wheel time.
This is a demanding drive. With 12 significant decision points across 100.6 miles, you will need to stay alert - especially through interchange areas and urban stretches. Consider splitting it into segments if you are not comfortable with fast highway navigation.
Where does it get tricky?
The main spots that need attention: near the start (Field Point Road): Lane positioning matters here; at 0.7 miles: Navigation decision point; at 0.9 miles (I 95): Merge point - match speed before joining. Lane positioning matters here.
Greenwich is a town of about 60,000 in Fairfield County, southwestern Connecticut. It is one of the wealthiest communities in America and is blessed with lush and beautiful scenery and many large and impressive houses.
Top landmarks
•Bruce Museum — museum in Greenwich, Connecticut
•Great Captain Island Light — lighthouse built 1868 in Connecticut, United States
•Cos Cob station — Railway station in Greenwich, Connecticut, United States
Doable as a same-day drive at 2h 12m. Total distance: 100.6 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
2h 12m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (94%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 94.6 miles on I 95. The full list of main roads is in the Roads section above.
Yes — we found about 13 rest areas or service plazas within a short detour of the route (from OpenStreetMap). See the Rest Stops tab under Nearby Places for locations and mile markers. Plan to stretch, use the bathroom, and top off fluids every 2–3 hours on longer drives.
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 Old Mystic, CT before sunset when you can. Check the Trip Plan for departure windows that land you in daylight.
Only with planning. This is a long drive for kids — consider splitting it into two days rather than pushing through. There are 13 rest areas along the route for bathroom stops.
The main spots that need attention: near the start (Field Point Road): Lane positioning matters here; at 0.7 miles: Navigation decision point; at 0.9 miles (I 95): Merge point - match speed before joining. Lane positioning matters here.
Yes — Weir Farm National Historical Park. 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 Old Mystic, CT before heading back.
