How far is Brentwood, NH from Merrimack, NH?
The driving distance from Brentwood, NH to Merrimack, NH is about 35.4 miles (56.9 km), with a travel time of about 00h 41m by car.
- The straight-line flight distance is about 22.7 miles (36.5 km).
- For a round trip, plan for roughly 01h 23m 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 41m.
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.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Cloudy
Mostly Cloudy
Driving Route Map
The map below follows the saved road route between Brentwood and Merrimack.
Turn-by-Turn Driving Directions
Step-by-step road directions between Brentwood and Merrimack.
-
1
Start on Crawley Falls Road
43 m · 9 sec · Crawley Falls Road
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2
Turn right onto Middle Road
88 m · 10 sec · Middle Road
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3
Turn right onto Officer Stephen Arkell Memorial Highway
3.1 mi · 4 min · Officer Stephen Arkell Memorial Highway
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4
Continue on Calef Highway
2373 ft · 60 sec · Calef Highway
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5
Turn left
1883 ft · 46 sec
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6
Merge slight left
20.3 mi · 24 min
-
7
Keep slight right to continue on I 293 North, NH 101 West: Manchester Airport, Manchester, Bedford
3.3 mi · 4 min
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8
Keep slight left to continue on NH 101 West: Bedford, Nashua
2871 ft · 45 sec
-
9
Take the exit slight right toward Everett Turnpike South: Merrimack, Nashua, Manchester Airport
1840 ft · 44 sec
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10
Merge slight left onto Everett Turnpike
1.9 mi · 3 min · Everett Turnpike
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11
Take the exit slight right toward Airport
1.3 km · 1 min
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12
Keep slight right to continue on Merrimack
1425 ft · 38 sec
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13
Turn right onto South River Road
704 ft · 13 sec · South River Road
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14
Continue on Daniel Webster Highway
3.8 mi · 8 min · Daniel Webster Highway
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15
Turn slight left onto Loop Road
25 m · 4 sec · Loop Road
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16
Arrive at your destination
0 m · 1 sec · Loop Road
Car Route Details
A richer read on the saved driving route between Brentwood and Merrimack.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Calef Highway
Merge slight left
20.3 mi · 00h 24m
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.
Mostly Cloudy leaving Brentwood and Mostly Cloudy near Merrimack.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Brentwood to Merrimack?
The road trip is about 35.4 miles (56.9 km) and usually takes 00h 41m 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?
Auburn is a useful midpoint, sitting about 17.6 miles from Brentwood and 17.7 miles from Merrimack.
How much longer is the road route than the straight-line distance?
The direct path is about 22.7 miles (36.5 km), while the road route adds roughly 12.7 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 7:06 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $4.93 one way or $9.86 round trip. Estimated CO2 is about 11.1 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Cloudy around Brentwood and Mostly Cloudy near Merrimack.
Stop Ideas Near Auburn
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 Auburn.
Manchester, New Hampshire
Nashua, NH
Concord, New Hampshire
Exeter station
Flight Path Map
This map shows the direct air route between Brentwood and Merrimack. Straight-line distance: 22.68 mi (36.5 km).
#1 Brentwood
Town in New Hampshire
| Population | 4,612 |
| Coordinates | 42.9787000, -71.0728400 |
| Altitude | 35 |
| Country | United States |
#2 Merrimack
River in New Hampshire and Massachusetts, United States
| Population | 27,452 |
| Coordinates | 42.8650900, -71.4934000 |
| Altitude | 47 |
| Country | United States |
End: (-71.493333, 42.865106)
Estimated Travel Time
Distance: 57 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 10m |
| 40 mph (64.37 km/h) | 00h 53m |
| 50 mph (80.47 km/h) | 00h 42m |
| 60 mph (96.56 km/h) | 00h 35m |
| 70 mph (112.65 km/h) | 00h 30m |
| 80 mph (129 km/h) | 00h 26m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.95 | $4.93 | $9.86 |
| Mid-grade | $4.46 | $5.57 | $11.14 |
| Premium | $4.86 | $6.07 | $12.15 |
| Diesel | $6.00 | $7.50 | $14.99 |
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 18, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.