How far is Dover, NH from Thornton, NH?
The driving distance from Dover, NH to Thornton, NH is about 81.5 miles (131.2 km), with a travel time of about 01h 58m by car.
- The straight-line flight distance is about 62.6 miles (100.8 km).
- For a round trip, plan for roughly 03h 56m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM EDT.
Reverse, save, or send this route
This route works well as a day trip with time at the destination. Copy the route link, send it to another device, or print a clean version before you head out.
This route works well as a day trip with time at the destination.
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 01h 58m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
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 Belknap County, New Hampshire, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Partly Sunny
Partly Sunny
Driving Route Map
The map below follows the saved road route between Dover and Thornton.
Turn-by-Turn Driving Directions
Step-by-step road directions between Dover and Thornton.
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1
Start on the route
7 m · 8 sec
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2
Turn sharp left onto Main Street
98 m · 11 sec · Main Street
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3
Turn straight onto Central Avenue
1.9 mi · 5 min · Central Avenue
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4
Turn left onto Indian Brook Drive
1634 ft · 47 sec · Indian Brook Drive
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5
Take the ramp slight right toward Spaulding Turnpike North, NH 16 North: Rochester
1167 ft · 29 sec
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6
Merge slight left onto Spaulding Turnpike
8.5 mi · 10 min · Spaulding Turnpike
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7
Take the exit slight right toward NH 11 West: Farmington, Alton
1684 ft · 59 sec
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8
Turn left onto Farmington Road
2.3 mi · 4 min · Farmington Road
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9
Continue on NH Route 11
6.1 mi · 9 min · NH Route 11
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10
Continue on Henry Wilson Highway
6.2 mi · 9 min · Henry Wilson Highway
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11
Enter the roundabout and take exit 3 toward the route
797 ft · 23 sec
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12
Exit the roundabout
3023 ft · 2 min
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13
Turn left onto Factory Street
2617 ft · 1 min · Factory Street
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14
Continue on Frank C. Gilman Highway
3.7 mi · 7 min · Frank C. Gilman Highway
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15
Continue on New Hampshire Route 140
10 mi · 18 min · New Hampshire Route 140
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16
Continue on Gilmanton Road
1.9 mi · 3 min · Gilmanton Road
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17
Continue on State Route 140
1135 ft · 36 sec · State Route 140
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18
Continue on Main Street
1094 ft · 31 sec · Main Street
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19
Turn right onto Depot Street
2.9 mi · 5 min · Depot Street
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20
Continue on Tilton Road
1.8 mi · 3 min · Tilton Road
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21
Continue on I 93 North
2342 ft · 57 sec
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22
Merge slight left onto Styles Bridges Highway
31.3 mi · 34 min · Styles Bridges Highway
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23
Take the exit slight right toward US 3: Thornton
1181 ft · 39 sec
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24
At the end of the road, turn left onto Daniel Webster Highway
1.8 mi · 3 min · Daniel Webster Highway
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25
Arrive at your destination
0 m · 1 sec · Daniel Webster Highway
Car Route Details
A richer read on the saved driving route between Dover and Thornton.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Styles Bridges Highway
Merge slight left onto Styles Bridges Highway
31.3 mi · 00h 34m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A comfortable day-trip route
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
Partly Sunny leaving Dover and Partly Sunny near Thornton.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Dover to Thornton?
The road trip is about 81.5 miles (131.2 km) and usually takes 01h 58m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
What is the halfway point on this route?
Gilmanton is a useful midpoint, sitting about 40.8 miles from Dover and 40.8 miles from Thornton.
How much longer is the road route than the straight-line distance?
The direct path is about 62.6 miles (100.8 km), while the road route adds roughly 18.9 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 8:00 AM to 10:00 AM EDT. If you want a more comfortable same-day return, try to leave by 2:34 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $11.36 one way or $22.72 round trip. Estimated CO2 is about 25.6 kg one way.
What should you check before leaving?
Before you leave, expect Partly Sunny around Dover and Partly Sunny near Thornton.
Stop Ideas Near Gilmanton
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 Gilmanton.
Tilton, New Hampshire
Concord, New Hampshire
New Hampton, New Hampshire
Plymouth, New Hampshire
Flight Path Map
This map shows the direct air route between Dover and Thornton. Straight-line distance: 62.61 mi (100.76 km).
#1 Dover
County seat city in Strafford County, New Hampshire, United States
| Population | 32,443 |
| Coordinates | 43.1978600, -70.8736700 |
| Altitude | 19 |
| Country | United States |
#2 Thornton
Town in Grafton County, New Hampshire, United States
| Population | 2,553 |
| Coordinates | 43.8928500, -71.6759100 |
| Altitude | 184 |
| Country | United States |
End: Thornton (-71.67591, 43.89285)
Estimated Travel Time
Distance: 131 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 02h 43m |
| 40 mph (64.37 km/h) | 02h 02m |
| 50 mph (80.47 km/h) | 01h 37m |
| 60 mph (96.56 km/h) | 01h 21m |
| 70 mph (112.65 km/h) | 01h 09m |
| 80 mph (129 km/h) | 01h 01m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.95 | $11.36 | $22.72 |
| Mid-grade | $4.46 | $12.84 | $25.67 |
| Premium | $4.86 | $13.99 | $27.98 |
| Diesel | $6.00 | $17.27 | $34.54 |
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 New Hampshire · Apr 23, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.