How far is Henniker, NH from Merrimack, NH?
The driving distance from Henniker, NH to Merrimack, NH is about 40.3 miles (64.8 km), with a travel time of about 00h 44m by car.
- The straight-line flight distance is about 27.3 miles (44 km).
- For a round trip, plan for roughly 01h 29m 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 44m.
This is a short drive, so your comfort window is wide. Traffic and current weather matter more than the clock.
This departure sits inside the recommended comfort window for the route.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
City in Merrimack County, New Hampshire, United States of America
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Sunny
Driving Route Map
The map below follows the saved road route between Henniker and Merrimack.
Turn-by-Turn Driving Directions
Step-by-step road directions between Henniker and Merrimack.
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1
Start on Maple Street
2760 ft · 47 sec · Maple Street
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2
Take the ramp straight
1438 ft · 39 sec
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3
Merge slight left
7.7 mi · 10 min
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4
Merge slight left
7.9 mi · 10 min
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5
Take the exit slight right toward I 93 South Toll: Manchester, Boston
1 km · 1 min
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6
Merge slight right onto Everett Turnpike
5.7 mi · 7 min · Everett Turnpike
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7
Keep slight left to continue on Everett Turnpike
2 mi · 2 min · Everett Turnpike
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8
Keep slight left to continue on Everett Turnpike
8.2 mi · 11 min · Everett Turnpike
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9
Keep slight left to continue on Everett Turnpike
2.4 mi · 3 min · Everett Turnpike
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10
Take the exit slight right toward Airport
1.3 km · 1 min
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11
Keep slight right to continue on Merrimack
1425 ft · 38 sec
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12
Turn right onto South River Road
704 ft · 13 sec · South River Road
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13
Continue on Daniel Webster Highway
3.8 mi · 8 min · Daniel Webster Highway
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14
Turn slight left onto Loop Road
25 m · 4 sec · Loop Road
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15
Arrive at your destination
0 m · 1 sec · Loop Road
Car Route Details
A richer read on the saved driving route between Henniker 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.
Everett Turnpike
Keep slight left to continue on Everett Turnpike
8.18 mi · 00h 11m
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 Sunny leaving Henniker and Sunny near Merrimack.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Henniker to Merrimack?
The road trip is about 40.3 miles (64.8 km) and usually takes 00h 44m 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?
Bow Bog is a useful midpoint, sitting about 20.1 miles from Henniker and 20.1 miles from Merrimack.
How much longer is the road route than the straight-line distance?
The direct path is about 27.3 miles (44 km), while the road route adds roughly 13 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 7:00 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $5.60 one way or $11.20 round trip. Estimated CO2 is about 12.6 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Henniker and Sunny near Merrimack.
Stop Ideas Near Bow Bog
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 Bow Bog.
Concord, New Hampshire
Manchester, New Hampshire
Tilton, New Hampshire
Nashua, NH
Flight Path Map
This map shows the direct air route between Henniker and Merrimack. Straight-line distance: 27.37 mi (44.04 km).
#1 Henniker
Town in New Hampshire
| Population | 5,006 |
| Coordinates | 43.1798000, -71.8223000 |
| Altitude | 132 |
| 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: 65 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 20m |
| 40 mph (64.37 km/h) | 01h 00m |
| 50 mph (80.47 km/h) | 00h 48m |
| 60 mph (96.56 km/h) | 00h 40m |
| 70 mph (112.65 km/h) | 00h 34m |
| 80 mph (129 km/h) | 00h 30m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.95 | $5.60 | $11.20 |
| Mid-grade | $4.46 | $6.33 | $12.66 |
| Premium | $4.86 | $6.90 | $13.80 |
| Diesel | $6.00 | $8.52 | $17.03 |
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 · May 04, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.