How far is Decatur, AL from Mountain Brook, AL?
The driving distance from Decatur, AL to Mountain Brook, AL is about 28.5 miles (45.8 km), with a travel time of about 00h 39m by car.
- The straight-line flight distance is about 26.1 miles (42 km).
- For a round trip, plan for roughly 01h 18m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 7:00 AM to 7:00 PM CDT.
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 39m.
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.
The most populous city in Madison County, Alabama.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Sunny
Driving Route Map
The map below follows the saved road route between Decatur and Mountain Brook.
Turn-by-Turn Driving Directions
Step-by-step road directions between Decatur and Mountain Brook.
-
1
Start on the route
130 m · 37 sec
-
2
At the end of the road, turn left onto Ferry Street Northeast
50 m · 9 sec · Ferry Street Northeast
-
3
Turn left onto Lee Street Northeast
1583 ft · 57 sec · Lee Street Northeast
-
4
At the end of the road, turn left onto 6th Avenue Northeast
2.2 mi · 3 min · 6th Avenue Northeast
-
5
Continue on Huntsville-Decatur Highway
3 mi · 4 min · Huntsville-Decatur Highway
-
6
Continue straight
19.3 mi · 21 min
-
7
Take the exit slight right toward Wasthington Street, Jefferson Street, Downtown
985 ft · 24 sec
-
8
Continue on Wasthington Street, Jefferson Street, Downtown
120 m · 10 sec
-
9
Keep slight left to continue on Washington Street North
549 ft · 15 sec
-
10
Turn straight onto Washington Street Northwest
103 m · 10 sec · Washington Street Northwest
-
11
Turn right onto Pratt Avenue Northeast
1.2 km · 1 min · Pratt Avenue Northeast
-
12
Turn right onto Andrew Jackson Way Northeast
836 ft · 19 sec · Andrew Jackson Way Northeast
-
13
Continue on California Street Southeast
2719 ft · 1 min · California Street Southeast
-
14
Turn left onto McClung Avenue Southeast
1.1 km · 2 min · McClung Avenue Southeast
-
15
At the end of the road, turn right onto Owens Drive Southeast
774 ft · 30 sec · Owens Drive Southeast
-
16
Turn left onto Hermitage Avenue Southeast
2118 ft · 2 min · Hermitage Avenue Southeast
-
17
At the end of the road, turn right onto Kennamer Drive Southeast
44 m · 7 sec · Kennamer Drive Southeast
-
18
Turn left onto Shades Crest Road Southeast
685 ft · 30 sec · Shades Crest Road Southeast
-
19
Keep slight right to continue on Shades Crest Road Southeast
113 m · 17 sec · Shades Crest Road Southeast
-
20
Continue on Shades Crest Road Southeast
1491 ft · 1 min · Shades Crest Road Southeast
-
21
Arrive at your destination
0 m · 1 sec · Shades Crest Road Southeast
Car Route Details
A richer read on the saved driving route between Decatur and Mountain Brook.
Turn-heavy local drive
The route has frequent decision points for its length, so lane choice and turn timing will matter more than cruising speed.
Huntsville-Decatur Highway
Continue straight
19.3 mi · 00h 21m
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.
Sunny leaving Decatur and Sunny near Mountain Brook.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Decatur to Mountain Brook?
The road trip is about 28.5 miles (45.8 km) and usually takes 00h 39m 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?
Madison is a useful midpoint, sitting about 14.2 miles from Decatur and 14.2 miles from Mountain Brook.
How much longer is the road route than the straight-line distance?
The direct path is about 26.1 miles (42 km), while the road route adds roughly 2.4 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 CDT. If you want a more comfortable same-day return, try to leave by 7:12 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $3.79 one way or $7.57 round trip. Estimated CO2 is about 8.9 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Decatur and Sunny near Mountain Brook.
Flight Path Map
This map shows the direct air route between Decatur and Mountain Brook. Straight-line distance: 26.09 mi (41.98 km).
#1 Decatur
The most populous city in Morgan County, Alabama.
| Population | 54,381 |
| Coordinates | 34.6059300, -86.9833400 |
| Altitude | 171 |
| Country | United States |
#2 Mountain Brook
City in southeastern Jefferson County, Alabama
| Population | 20,034 |
| Coordinates | 34.7250900, -86.5477700 |
| Altitude | 226 |
| Country | United States |
End: Mountain Brook (-86.54777, 34.72509)
Estimated Travel Time
Distance: 46 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 56m |
| 40 mph (64.37 km/h) | 00h 42m |
| 50 mph (80.47 km/h) | 00h 34m |
| 60 mph (96.56 km/h) | 00h 28m |
| 70 mph (112.65 km/h) | 00h 24m |
| 80 mph (129 km/h) | 00h 21m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.79 | $3.79 | $7.57 |
| Mid-grade | $4.26 | $4.26 | $8.52 |
| Premium | $4.63 | $4.63 | $9.25 |
| Diesel | $5.42 | $5.42 | $10.83 |
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 Alabama · Apr 23, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.