The drive from Seymour, TN to Gallatin, TN covers 185.1 miles and takes about 3h 31m behind the wheel.
This route is realistic as a one-day drive if you keep your stops efficient.
The route leans on I 40, SR 109, Chapman Highway for much of the mileage,
and the overall profile is highway-focused drive.
The longest uninterrupted segment is about 154.4 miles on I 40.
At current regular gas prices, budget about $28.94 one way before food or hotel costs.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Break Rhythm
1 planned break
A short stop every 2 to 3 hours is enough for this drive.
Midpoint
92.6 miles from Seymour, TN
A natural place for your longest stop of the day
, about 1h 45m into the drive
.
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 3h 31m. Total distance: 185.1 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
3h 31m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (90%). Some complex stretches to watch for.
Drive Character
This is a 3h 31m highway drive covering 185.1 miles, with most of the trip on I 40 and SR 109. The longest continuous stretch is about 154.4 miles on I 40.
Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.
There are about 15 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
I 40 is the longest continuous segment at about 154.4 miles.
How Hard Is This Drive?
This is a straightforward highway drive that stays mostly on I 40 and SR 109. You will hit about 9 points where you need to pay attention to lane position or signs. The trickiest moment comes around 2.3 miles in near US 441 / Chapman Highway.
Driving Effort6/10
Moderate - straightforward overall, but long enough or busy enough to require pacing
Balances navigation complexity with total wheel time.
This drive requires moderate attention. Across 185.1 miles you will encounter 9 spots where lane choice or exit timing matters. Not difficult for experienced highway drivers, but worth previewing the tricky sections before you go.
Where does it get tricky?
The main spots that need attention: at 2.3 miles (US 441 / Chapman Highway): Merge point - match speed before joining. Lane positioning matters here; at 15.7 miles: Multiple destination signs - pick the right one; at 16 miles (I 40): Merge point - match speed before joining. Lane positioning matters here.
Critical Maneuvers
5 of 9 key points
These are the spots where you need to pay the most attention. Preview them before you drive.
5
2.3 mi into trip|~4m in|US 441 / Chapman Highway
Merge onto US 441 / Chapman Highway
Merge point - match speed before joining. Lane positioning matters here
Use the left / straight lanes.
4
15.7 mi into trip|~21m in
Take the ramp toward I 40 West, I 75 South
Multiple destination signs - pick the right one
Toward I 40 West, I 75 South
5
16 mi into trip|~21m in|I 40
Merge onto I 40
Merge point - match speed before joining. Lane positioning matters here
Use the straight / slight right lanes.
7
34.3 mi into trip|~43m in|I 40
Keep slight right at fork onto I 40 toward Nashville
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
Toward Nashville
7
170.4 mi into trip|~3h 9m in
Take the exit toward TN 109: Gallatin
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the slight right lane.
Exit 232
Toward TN 109: Gallatin
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
On the drive from Seymour, TN to Gallatin, TN, road signs begin pointing toward Nashville along the way.
Nashville
34.3 mi in|~43m|via I 40
Main Roads
Road
Distance
Duration
I 40
154.4 mi
2h 47m
SR 109
12.7 mi
18m
Chapman Highway
11.5 mi
13m
Boyds Creek Highway
2.3 mi
3m
South Water Avenue
1.7 mi
3m
Henley Street
0.8 mi
1m
Western Avenue
0.7 mi
1m
Ailor Avenue
0.4 mi
<1m
Longest stretch:
I 40
— 154.4 mi, about 2h 47m
Turn-by-Turn Driving Directions
Step-by-step road directions between Seymour, TN and Gallatin, TN.
1
Start on SR 338
2.3 mi·3 min·Boyds Creek Highway
2
Take the ramp
239 ft·6 sec
3
Merge onto US 441
11 mi·13 min·Chapman Highway
Use the left / straight lanes.
4
Continue on US 441; SR 33
0.7 mi·1 min·Henley Street
Use the straight lane.
5
Continue on US 441
0.1 mi·14 sec·Henley Street
6
Turn slight left onto SR 62
0.7 mi·1 min·Western Avenue
Use the straight lane.
7
Turn left onto Ailor Avenue
0.4 mi·43 sec·Ailor Avenue
8
Take the ramp
0.3 mi·39 sec
Toward I 40 West, I 75 South
9
Merge onto I 40
18 mi·21 min·I 40
Use the straight / slight right lanes.
10
Keep slight right at fork onto I 40
136 mi·2 hr 26 min·I 40
Toward NashvilleUse the straight / slight right lanes.
11
Take the exit
0.3 mi·48 sec
Exit 232Toward TN 109: GallatinUse the slight right lane.
12
Turn right onto SR 109
13 mi·18 min·SR 109
13
Continue on South Water Avenue
1.7 mi·3 min·South Water Avenue
Use the left lane.
14
Turn left onto TN 25
67 ft·1 sec·West Main Street
15
Arrive at destination
TN 25
Trip Plan
Morning Departure
An early start around 7-8 AM gets you there with plenty of daylight left.
Evening Departure
A late afternoon start means arriving after dark. Morning is better.
You can normally do this drive in one day.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 92.6 miles from Seymour, TN, or about 1h 45m into the drive.
The longest continuous stretch on this route runs about 154.4 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 41 miles or 50m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 92.6 miles or 1h 45m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 2h 49m
Traffic, exits, and arrival timing usually matter more near Gallatin, TN than in the middle of the route.
Before You Leave
+
Open the route before leaving Seymour, TN 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 Seymour, TN
This is one driving day of about 185.1 miles and 3h 31m.
Your first comfortable stop window is around 41 miles from Seymour, TN.
This route can stay practical as a one-day drive if traffic stays reasonable.
Plan about 1 real break rather than only quick fuel stops.
The longest stretch is on I 40 for about 154.4 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 92.6 mi from Seymour, TN
· 1h 45m into the drive
Place data sourced from public business listings. Hours and availability may vary.
National Parks Near This Route
Worth a detour if your schedule allows.
Stones River National Battlefield
National Battlefield
The Battle of Stones River began on the last day of 1862 and became one of the bloodiest conflicts of the Civil War. The battle produced important military and political gains for the Union, and it ch...
22 mi from route
~55 min detour
Free
near mile 166
Ridge upon ridge of forest straddles the border between North Carolina and Tennessee in Great Smoky Mountains National Park. World renowned for its diversity of plant and animal life, the beauty of it...
Park data from the National Park Service API. Alerts update every 2 hours.
Fuel & Cost
Regular Gas
$28.94 one way
$57.88 round trip
$3.97/gal25.4 MPG avg65 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.36
$31.77
$63.55
premium
$4.89
$35.62
$71.24
diesel
$5.61
$40.87
$81.74
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$29
Meals
$25–$50
Total
$54–$79
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 64.8 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $19 in charging
· 0 stops
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
55.5
0
$19.44
$8.88
Efficient EV
46.3
0
$16.20
$7.40
EV Truck/SUV
74
0
$25.91
$11.85
Gas CO2
65 kg
EV CO2
22 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 Apr 13, 2026
Origin
Seymour, TN
Night
in Seymour on Friday
Local time
10:24 PM
EDT
Current temp
79°F
Unavailable
Live forecast
Destination
Gallatin, TN
Night
in Gallatin on Friday
Local time
9:24 PM
CDT
Current temp
52°F
Unavailable
Live forecast
75°F
Spring City, TN
93 mi in
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
1 hour earlier
The destination clock does not match departure time, so double-check hotel check-in windows and late arrival plans.
Temperature spread
27 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
3h 31m on the road
Use the two city cards together: check the sky where you start, then compare it with the local time and temperature at arrival.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
Frequently Asked Questions
The drive from Seymour, TN to Gallatin, TN covers 185.1 miles and takes about 3h 31m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are I 40, SR 109, Chapman Highway. Most of the drive stays on highways, so watch for ramps and exits.
This is a comfortable same-day trip.
The midpoint is about 92.6 miles from Seymour, TN. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $28.94 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
An early start around 7-8 AM gets you there with plenty of daylight left. A late afternoon start means arriving after dark. Morning is better.
Plan about 1 meaningful break for fuel, food, or rest. A short stop every 2 to 3 hours is enough for this drive.
This drive requires moderate attention. Across 185.1 miles you will encounter 9 spots where lane choice or exit timing matters. Not difficult for experienced highway drivers, but worth previewing the tricky sections before you go.
The main spots that need attention: at 2.3 miles (US 441 / Chapman Highway): Merge point - match speed before joining. Lane positioning matters here; at 15.7 miles: Multiple destination signs - pick the right one; at 16 miles (I 40): Merge point - match speed before joining. Lane positioning matters here.
On the drive from Seymour, TN to Gallatin, TN, road signs begin pointing toward Nashville along the way.
Yes. Nearby national parks include Stones River National Battlefield and Great Smoky Mountains National Park.
How this page is built
Compiled by the Trip.ovh planning team at COD Solutions Oy from open government datasets — OSRM over OpenStreetMap for geometry, EIA for fuel prices, and NPS for national parks. See our methodology for refresh cadence and limitations.
