How far is Colchester, CT from Groton, CT?
The driving distance from Colchester, CT to Groton, CT is about 28.7 miles (46.2 km), with a travel time of about 00h 34m by car.
- The straight-line flight distance is about 20.4 miles (32.8 km).
- For a round trip, plan for roughly 01h 08m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 7:00 AM to 7:00 PM EDT.
Reverse, save, or send this route
This is an easy same-day return drive. Copy the route link, send it to another device, or print a clean version before you head out.
This is an easy same-day return drive.
Flight Distance
Driving Distance
Gas Cost Calculator
Leave and Arrive Planner
Pick a departure time to see your estimated arrival and same-day return window.
Drive time stays fixed at 00h 34m.
This is a short drive, so your comfort window is wide. Traffic and current weather matter more than the clock.
You are leaving earlier than the recommended window, which gives you extra margin for breaks and traffic.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
Town in New London County, Connecticut, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Slight Chance Rain Showers then Mostly Sunny
Slight Chance Rain Showers then Partly Sunny
Driving Route Map
The map below follows the saved road route between Colchester and Groton.
Turn-by-Turn Driving Directions
Step-by-step road directions between Colchester and Groton.
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1
Start on Hayward Avenue
55 m · 15 sec · Hayward Avenue
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2
Turn left onto Lebanon Avenue
40 m · 6 sec · Lebanon Avenue
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3
Turn left onto Main Street
1.4 km · 2 min · Main Street
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4
Continue on New London Road
3.4 mi · 5 min · New London Road
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5
Continue on Hartford Road
3.6 mi · 6 min · Hartford Road
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6
Enter the roundabout and take exit 2 toward New London Road
30 m · 1 sec · New London Road
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7
Exit the roundabout onto New London Road
2.8 mi · 5 min · New London Road
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8
Continue on Hartford-New London Turnpike
3.1 mi · 5 min · Hartford-New London Turnpike
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9
Continue on Hartford Turnpike
4.4 mi · 8 min · Hartford Turnpike
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10
Continue on Broad Street
94 m · 14 sec · Broad Street
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11
Take the exit left
590 ft · 14 sec
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12
Merge slight left
2.6 mi · 4 min
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13
Take the exit slight right toward US 1 North: Thames Street, Downtown Groton
676 ft · 23 sec
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14
Keep slight right
1464 ft · 50 sec
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15
Keep slight left
69 m · 10 sec
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16
Continue on North Street
1569 ft · 35 sec · North Street
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17
Continue on Mitchell Street
2610 ft · 55 sec · Mitchell Street
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18
Turn right onto Ledyard Avenue
616 ft · 33 sec · Ledyard Avenue
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19
Turn sharp right onto Smith Street
8 m · 1 sec · Smith Street
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20
Arrive at your destination
0 m · 1 sec · Smith Street
Car Route Details
A richer read on the saved driving route between Colchester and Groton.
Turn-heavy local drive
The route has frequent decision points for its length, so lane choice and turn timing will matter more than cruising speed.
Hartford Turnpike
Continue on Hartford Turnpike
4.36 mi · 00h 08m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A short regional drive
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
Slight Chance Rain Showers then Mostly Sunny leaving Colchester and Slight Chance Rain Showers then Partly Sunny near Groton.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Colchester to Groton?
The road trip is about 28.7 miles (46.2 km) and usually takes 00h 34m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
What is the halfway point on this route?
Salem is a useful midpoint, sitting about 11.2 miles from Colchester and 17.5 miles from Groton.
How much longer is the road route than the straight-line distance?
The direct path is about 20.4 miles (32.8 km), while the road route adds roughly 8.3 extra miles because roads do not follow the straight air line.
When is the best time to leave for this route?
A good departure window is usually 7:00 AM to 7:00 PM EDT. If you want a more comfortable same-day return, try to leave by 7:22 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $3.98 one way or $7.97 round trip. Estimated CO2 is about 9 kg one way.
What should you check before leaving?
Before you leave, expect Slight Chance Rain Showers then Mostly Sunny around Colchester and Slight Chance Rain Showers then Partly Sunny near Groton.
Stop Ideas Near Salem
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Salem.
New London Union Station
Old Saybrook station
Foxwoods Casino, Connecticut
Mystic station
Flight Path Map
This map shows the direct air route between Colchester and Groton. Straight-line distance: 20.38 mi (32.8 km).
#1 Colchester
Town in the U.
| Population | 15,774 |
| Coordinates | 41.5756500, -72.3320300 |
| Altitude | 144 |
| Country | United States |
#2 Groton
Town in Connecticut
| Population | 38,258 |
| Coordinates | 41.3501000, -72.0784100 |
| Altitude | 24 |
| Country | United States |
End: Smith Street (-72.078453, 41.350105)
Estimated Travel Time
Distance: 46 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 57m |
| 40 mph (64.37 km/h) | 00h 43m |
| 50 mph (80.47 km/h) | 00h 34m |
| 60 mph (96.56 km/h) | 00h 28m |
| 70 mph (112.65 km/h) | 00h 24m |
| 80 mph (129 km/h) | 00h 21m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.95 | $3.98 | $7.97 |
| Mid-grade | $4.46 | $4.50 | $9.00 |
| Premium | $4.86 | $4.91 | $9.81 |
| Diesel | $6.00 | $6.06 | $12.11 |
Assumes 8.3 L/100 km (about 28.3 MPG). CO2 is an estimate and varies by vehicle, fuel blend, traffic, and terrain.
Prices in Connecticut · May 30, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.