Huntsville to Demopolis is 209.7 miles and takes about 4h 1m via I 20 and I 65, with a fuel budget near $31 and enough daylight to finish in a day. This trip stays within Alabama, taking you from the Southeast region to the Southeast. The route is primarily highway, making for a straightforward drive. With a drive time under five hours and a relatively low fuel cost, this is a manageable one-day trip.
Trip Pace
Same-day drive is realistic
A same-day return is possible, but it will make for a full day on the road.
Break Rhythm
1 planned break
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
104.8 miles from Huntsville, AL
A natural place for your longest stop of the day
, about 1h 56m into the drive
.
Main Roads
Road
Distance
Duration
I 20
78.9 mi
1h 25m
I 65
77.4 mi
1h 23m
Demopolis Highway
24 mi
34m
I 565
18.9 mi
20m
US 11
4.6 mi
6m
M L King Highway
1.3 mi
3m
Washington Street Northeast
0.5 mi
<1m
Greensboro Street
0.3 mi
<1m
Longest stretch:
I 20
— 78.9 mi, about 1h 25m
Traffic on I-565
Hour-of-day weekday pattern from 150 FHWA count stations on your route.
Peak
4 PM
~4,094 veh/hr typical
· worst 4,711
Quietest
1 AM
~200 veh/hr
Peak-to-quiet ratio
20.5×
busier at peak than in the quiet hours
12a6anoon6p11p
Averaged across 105 weeks of 2023 FHWA Travel Monitoring Analysis System data. Weekday hours only (Mon–Fri).
Turn-by-Turn Driving Directions
Step-by-step road directions between Huntsville, AL and Demopolis, AL.
1
Start on Spring Street Southwest
4 ft·3 sec·Spring Street Southwest
2
Turn right onto West Side Square
376 ft·16 sec·West Side Square
3
Continue on South Side Square
369 ft·16 sec·South Side Square
4
Turn left onto East Side Square
371 ft·9 sec·East Side Square
5
Continue on Washington Street Southeast
364 ft·9 sec·Washington Street Southeast
6
Continue on Washington Street Northeast
0.5 mi·53 sec·Washington Street Northeast
7
Take the ramp
0.3 mi·40 sec
8
Merge onto I 565; US 72 Alternate
19 mi·20 min·I 565; US 72 Alternate
9
Take the exit
0.2 mi·16 sec
Exit 1Toward I 65: Birmingham, Nashville
10
Keep slight left at fork
0.8 mi·1 min
Exit 1Toward I 65 South: BirminghamUse the slight left / slight right lanes.
11
Merge onto I 65
74 mi·1 hr 18 min·I 65
Use the straight / slight right lanes.
12
Take the exit
0.5 mi·38 sec
Exit 265Toward I 22 West, US 31: Memphis, FultondaleUse the slight right lane.
13
Keep slight left at fork
0.5 mi·37 sec
Toward I 22 West: MemphisUse the straight lane.
14
Keep slight left at fork
0.4 mi·27 sec
Toward MontgomeryUse the straight / slight right lanes.
15
Merge onto I 65
3.7 mi·4 min·I 65
Use the straight / slight right lanes.
16
Take the exit
0.4 mi·54 sec
Exit 261CToward I 20 West, I 59 South: Tuscaloosa
17
Merge onto I 20; I 59
79 mi·1 hr 25 min·I 20; I 59
Use the straight / slight right lanes.
18
Take the exit
0.2 mi·28 sec
Toward UnionUse the straight / slight right lanes.
19
Turn left onto CR 208
1.3 mi·3 min·M L King Highway
20
Merge onto US 11; US 43
4.6 mi·6 min·US 11; US 43
21
Turn left onto 1st Avenue
0.1 mi·27 sec·1st Avenue
22
Merge onto US 43; AL 14
0.3 mi·33 sec·Greensboro Street
23
Turn slight right onto US 43
24 mi·34 min·Demopolis Highway
24
Turn left onto US 43
371 ft·6 sec·East Capitol Street
25
Turn right onto North Strawberry Avenue
281 ft·12 sec·North Strawberry Avenue
26
Arrive at destination
North Strawberry Avenue
Trip Plan
To make the most of this 4-hour drive, consider an early morning departure from Huntsville to avoid any potential traffic. Since the total trip is under five hours and only requires one stop according to the data, you have flexibility in when and where you choose to pause. Keep an eye on your fuel gauge, especially before that 78.9-mile stretch on I 20, as services might be less frequent in certain sections. The estimated fuel cost of $31 suggests planning for at least one fill-up along the way.
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 104.8 miles from Huntsville, AL, or about 1h 56m into the drive.
The longest continuous stretch on this route runs about 78.9 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 46 miles or 51m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 104.8 miles or 1h 56m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 3h 8m
Traffic, exits, and arrival timing usually matter more near Demopolis, AL than in the middle of the route.
Before You Leave
+
Open the route before leaving Huntsville, AL 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 Huntsville, AL
This is one driving day of about 209.7 miles and 4h 1m.
Your first comfortable stop window is around 46 miles from Huntsville, AL.
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 20 for about 78.9 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Place data sourced from public business listings. Hours and availability may vary.
Heads-up: tricky spots
5 of 20
5 decision points cluster between mile 20 and 95.6 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
6
20 mi into trip|~22m in
Take the exit toward I 65: Birmingham, Nashville
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Exit 1
Toward I 65: Birmingham, Nashville
8
20.1 mi into trip|~23m in
Keep slight left at fork toward I 65 South: Birmingham
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight left / slight right lanes.
Exit 1
Toward I 65 South: Birmingham
8
94.6 mi into trip|~1h 43m in
Take the exit toward I 22 West, US 31: Memphis, Fultondale
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Exit 265
Toward I 22 West, US 31: Memphis, Fultondale
7
95.1 mi into trip|~1h 44m in
Keep slight left at fork toward I 22 West: Memphis
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight lane.
Toward I 22 West: Memphis
7
95.6 mi into trip|~1h 44m in
Keep slight left at fork toward Montgomery
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
Toward Montgomery
Fuel & Cost
Regular Gas
$32.64 one way
$65.29 round trip
$3.95/gal25.4 MPG avg73 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.36
$35.99
$71.97
premium
$4.71
$38.89
$77.79
diesel
$6.18
$51.01
$102.03
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$33
Meals
$25–$50
Total
$58–$83
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 73.4 kg one way.
Prices: EIA weekly data, 2026-10-12.
Driving Electric?
About $22 in charging
· 0 stops
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
62.9
0
$22.02
$10.07
Efficient EV
52.4
0
$18.35
$8.39
EV Truck/SUV
83.9
1
$29.36
$13.42
Gas CO2
73 kg
EV CO2
25 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 Oct 19, 2026
Origin
Huntsville, AL
Morning
in Huntsville on Tuesday
Local time
7:31 AM
CDT
Current temp
73°F
Sunny
ENE 0 to 5 mph0% chanceLive forecast
Rip Current Statement
Rip Current Statement issued October 19 at 7:08AM CDT until October 20 at 6:00AM CDT by NWS Mobile AL
Destination
Demopolis, AL
Morning
in Demopolis on Tuesday
Local time
7:31 AM
CDT
Current temp
74°F
Sunny
NE 5 to 10 mph0% chanceLive forecast
Rip Current Statement
Rip Current Statement issued October 19 at 7:08AM CDT until October 20 at 6:00AM CDT by NWS Mobile AL
77°F
Birmingham, AL
105 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
Same local time
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
1 degrees warmer at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
4h 1m on the road
An early start around 7-8 AM gets you there with plenty of daylight left.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
National Parks Near This Route
Worth a detour if your schedule allows.
Birmingham Civil Rights National Monument
National Monument
In 1963, images of snarling police dogs unleashed against non-violent protesters and of children being sprayed with high-pressure hoses appeared in print and television news around the world. These dr...
2 mi from route
~5 min detour
Free
near mile 101.2
Park Closure: A.G Gaston Motel Closed for Construction
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
This drive is predominantly highway, with 86% of the route on major roads like I 20 and I 65. You'll experience a long stretch of 78.9 miles on I 20, indicating a significant period of consistent highway cruising. The transition to surface roads, like Demopolis Highway, will likely occur after this main highway segment. Expect a generally high-speed environment for most of your travel.
86% highway — fuel and pacing are the main things to plan.
26 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 78.9 mi on I 20.
How Hard Is This Drive?
10/10
This is a straightforward highway drive that stays mostly on I 20 and I 65. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 20 miles in.
Driving Effort10/10
High effort - long or complex enough to need steady focus all day
Balances navigation complexity with total wheel time.
This is a demanding drive. With 20 significant decision points across 209.7 miles, you will need to stay alert - especially through interchange areas and urban stretches. Consider splitting it into segments if you are not comfortable with fast highway navigation.
Where does it get tricky?
The main spots that need attention: at 20 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one; at 20.1 miles: Highway fork - watch signs carefully. Lane positioning matters here; at 94.6 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.
Elevation Profile
Mostly flat terrain
851 ft125 ft
Total Climb
314 ft
Total Descent
833 ft
Highest Point
851 ft
~44.9 mi in
Elevation Range
725 ft
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Huntsville, AL and Demopolis, AL, road signs point toward Nashville, Fultondale, Montgomery and Union.
Huntsville is in northern Alabama, about 20 miles (32 km) from the border with Tennessee. The city is a center for missile defense and aerospace technologies, with companies like Boeing, Lockheed Martin, Raytheon, and Northrop Grumman having major operations here. Cummings Research Park, the second largest research park in the country, is home to many of these companies.
Top landmarks
•U.S. Space & Rocket Center — science museum in Huntsville, Alabama
•Episcopal Church of the Nativity — church building in Alabama, United States of America
Doable as a same-day drive at 4h 1m. Total distance: 209.7 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
4h 1m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (86%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 78.9 miles on I 20. The full list of main roads is in the Roads section above.
Yes — we found about 1 rest area or service plaza within a short detour of the route (from OpenStreetMap). See the Rest Stops tab under Nearby Places for locations and mile markers. Plan to stretch, use the bathroom, and top off fluids every 2–3 hours on longer drives.
It helps. This route has a higher-than-average number of complex decision points, which get harder in the dark. If the last hour of the trip is on surface roads or mountain grades, aim to arrive at Demopolis, AL before sunset when you can. Check the Trip Plan for departure windows that land you in daylight.
Only with planning. This is a long drive for kids — consider splitting it into two days rather than pushing through. Plan at least 1 meaningful breaks. There are 1 rest area along the route for bathroom stops.
The main spots that need attention: at 20 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one; at 20.1 miles: Highway fork - watch signs carefully. Lane positioning matters here; at 94.6 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.
Yes — Birmingham Civil Rights National Monument. See the National Parks section for detour distances and tips on detours.
Possible but tiring. At 4.0 hours each way, an in-and-out day trip would put you behind the wheel for 8.1 hours — manageable with a long break at Demopolis, AL, but most travelers stay overnight.
