Traveling from Mobile to Decatur covers 336.6 miles and typically takes about 6 hours and 12 minutes of drive time. Because this journey is entirely within Alabama, you will stay firmly within the Southeast region for the duration of the trip. While it is possible to complete the drive in a single day, be prepared for a long stint behind the wheel. Budget approximately $51 for fuel to cover the distance. This is a straightforward, no-nonsense trip that functions best as a direct transit rather than a leisurely sightseeing tour, making it ideal if you want to reach your destination efficiently.
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
168.3 miles from Mobile, AL
A natural place for your longest stop of the day
, about 3h 4m into the drive
.
Main Roads
Road
Distance
Duration
I 65
322.8 mi
5h 50m
I 165
4.5 mi
5m
Point Mallard Parkway Southeast
4.5 mi
6m
6th Avenue Southeast
3 mi
5m
Lee Street Northeast
0.2 mi
<1m
North Royal Street
0.2 mi
<1m
North Water Street
0.1 mi
<1m
6th Avenue Northeast
0.1 mi
<1m
Longest stretch:
I 65
— 322.8 mi, about 5h 50m
Turn-by-Turn Driving Directions
Step-by-step road directions between Mobile, AL and Decatur, AL.
To keep your energy high, plan for at least one dedicated stop during this 6-hour trek. Since the longest stretch is over 320 miles, breaking up the journey is essential for maintaining alertness. Leaving early in the morning is your best bet to avoid potential traffic congestion as you approach the more populated corridors of the state. Keep a close eye on your fuel gauge throughout the long I-65 segment to ensure you aren't caught off guard by pricing fluctuations. Since this is a single-day trip, having your snacks and entertainment prepared beforehand will make the long, uninterrupted highway miles pass much more comfortably.
Morning Departure
Start early — leave by 6-7 AM to arrive at a reasonable hour.
Evening Departure
This is a long drive — plan for a morning departure or consider splitting it into two days.
You can normally do this drive in one day.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 168.3 miles from Mobile, AL, or about 3h 4m into the drive.
The longest continuous stretch on this route runs about 322.8 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 74 miles or 1h 22m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 168.3 miles or 3h 4m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 5h 2m
Traffic, exits, and arrival timing usually matter more near Decatur, AL than in the middle of the route.
Before You Leave
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Open the route before leaving Mobile, AL so your first major turns are already loaded.
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Leave with enough water and a charging cable within reach, not packed away.
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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 Mobile, AL
This is one driving day of about 336.6 miles and 6h 12m.
Your first comfortable stop window is around 74 miles from Mobile, 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 65 for about 322.8 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 11
5 decision points cluster between mile 5.1 and 336.4 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
6
5.1 mi into trip|~7m in
Keep slight right at fork toward I 65: Montgomery
Highway fork - watch signs carefully
Exit 1B
Toward I 65: Montgomery
5
5.6 mi into trip|~7m in|I 65
Merge onto I 65
Merge point - match speed before joining. Lane positioning matters here
Use the straight / slight right lanes.
6
328.5 mi into trip|~5h 58m in
Take the exit toward 67: Decatur, Priceville, Somerville
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
333.3 mi into trip|~6h 5m in|US 31 / 6th Avenue Southeast
Turn right onto US 31 / 6th Avenue Southeast
Lane positioning matters here
Use the straight lane.
5
336.4 mi into trip|~6h 12m in|Lee Street Northeast
Turn left onto Lee Street Northeast
Lane positioning matters here
Use the straight lane.
Fuel & Cost
Regular Gas
$50.83 one way
$101.67 round trip
$3.84/gal25.4 MPG avg118 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.21
$55.80
$111.61
premium
$4.56
$60.42
$120.83
diesel
$5.61
$74.32
$148.63
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$51
Meals
$25–$50
Total
$76–$101
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 117.8 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $35 in charging
· 1 stop
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
101
1
$35.34
$16.16
Efficient EV
84.2
0
$29.45
$13.46
EV Truck/SUV
134.6
1
$47.12
$21.54
Gas CO2
118 kg
EV CO2
39 kg (67% less)
Plan for 1 charging stop. A 30-minute DC fast charge mid-route should be enough to complete the trip comfortably.
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 15, 2026
Origin
Mobile, AL
Evening
in Mobile on Saturday
Local time
8:25 PM
CDT
Current temp
80°F
Unavailable
Live forecast
Destination
Decatur, AL
Evening
in Decatur on Saturday
Local time
8:25 PM
CDT
Current temp
78°F
Unavailable
Live forecast
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
2 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
6h 12m on the road
Start early — leave by 6-7 AM to arrive at a reasonable hour.
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...
0 mi from route
~1 min detour
Free
near mile 255.4
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
This trip is heavily highway-focused, with 99% of your travel occurring on major thoroughfares. You will spend the vast majority of your time on I-65, which accounts for a massive 322.8-mile stretch of the route. After exiting the interstate, you will navigate via I-165 and Point Mallard Parkway Southeast to reach your final destination in Decatur. Expect a consistent interstate pace that favors speed over variety, as the route is designed for moving through the state quickly. It is a straightforward drive that demands focus but offers a very predictable experience for the driver.
99% highway — fuel and pacing are the main things to plan.
16 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 322.8 mi on I 65.
How Hard Is This Drive?
5/10
This is a straightforward highway drive that stays mostly on I 65 and I 165. You will hit about 11 points where you need to pay attention to lane position or signs. The trickiest moment comes around 5.1 miles in.
Driving Effort5/10
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 336.6 miles you will encounter 11 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 5.1 miles: Highway fork - watch signs carefully; at 5.6 miles (I 65): Merge point - match speed before joining. Lane positioning matters here; at 328.5 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one.
Elevation Profile
Gently rolling terrain
777 ft-1 ft
Total Climb
1,214 ft
Total Descent
653 ft
Highest Point
777 ft
~312.6 mi in
Elevation Range
778 ft
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 6h 12m. Total distance: 336.6 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
6h 12m drive, plan rest stops for pacing.
First-Time Driver
Mostly highway driving (99%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 322.8 miles on I 65. The full list of main roads is in the Roads section above.
We did not find dedicated rest areas on this route. For a drive this long, plan bathroom and stretch breaks around gas stations, fast-food stops, or small-town downtowns — check the Nearby Places section for options.
It helps. This is a long drive, so arriving tired and in the dark compounds. If the last hour of the trip is on surface roads or mountain grades, aim to arrive at Decatur, 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. Dedicated rest areas are limited, so plan gas or food stops as your bathroom breaks.
The main spots that need attention: at 5.1 miles: Highway fork - watch signs carefully; at 5.6 miles (I 65): Merge point - match speed before joining. Lane positioning matters here; at 328.5 miles: Exit ramp - move to the correct lane early. 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.
Not recommended in a single day. At 6.2 hours each way, a round trip means 12.4 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at Decatur, AL before the return drive.
