How far is Mountain Brook, AL from Decatur, AL?
The driving distance from Mountain Brook, AL to Decatur, AL is about 28.2 miles (45.4 km), with a travel time of about 00h 34m by car.
- The straight-line flight distance is about 26.1 miles (42 km).
- For a round trip, plan for roughly 01h 08m 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 34m.
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
Sunny
Driving Route Map
The map below follows the saved road route between Mountain Brook and Decatur.
Turn-by-Turn Driving Directions
Step-by-step road directions between Mountain Brook and Decatur.
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1
Start on Shades Crest Road Southeast
2549 ft · 2 min · Shades Crest Road Southeast
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2
Turn right onto Kennamer Drive Southeast
44 m · 12 sec · Kennamer Drive Southeast
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3
Turn left onto Hermitage Avenue Southeast
2118 ft · 2 min · Hermitage Avenue Southeast
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4
Turn right onto Owens Drive Southeast
774 ft · 27 sec · Owens Drive Southeast
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5
Turn left onto McClung Avenue Southeast
1.1 km · 2 min · McClung Avenue Southeast
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6
Turn right onto California Street Southeast
2719 ft · 56 sec · California Street Southeast
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7
Continue on Andrew Jackson Way Northeast
823 ft · 24 sec · Andrew Jackson Way Northeast
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8
Turn left onto Pratt Avenue Northeast
1.2 km · 1 min · Pratt Avenue Northeast
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9
Turn left onto Washington Street Northwest
78 m · 7 sec · Washington Street Northwest
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10
Take the ramp slight right
1582 ft · 39 sec
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11
Merge slight left
18.9 mi · 20 min
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12
Continue straight
624 ft · 9 sec
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13
Continue on Huntsville-Decatur Highway
3.5 mi · 4 min · Huntsville-Decatur Highway
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14
Continue on Bee Line Highway
1.6 mi · 2 min · Bee Line Highway
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15
Keep slight left to continue on 6th Avenue Northeast
1980 ft · 50 sec · 6th Avenue Northeast
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16
Turn right onto Lee Street Northeast
1040 ft · 32 sec · Lee Street Northeast
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17
Turn right
25 m · 6 sec
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18
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Mountain Brook and Decatur.
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.
Washington Street Northwest
Merge slight left
18.9 mi · 00h 20m
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 Mountain Brook and Sunny near Decatur.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Mountain Brook to Decatur?
The road trip is about 28.2 miles (45.4 km) and usually takes 00h 34m 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 14.1 miles from Mountain Brook and 14.1 miles from Decatur.
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 2.1 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 7:22 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 Mountain Brook and Sunny near Decatur.
Flight Path Map
This map shows the direct air route between Mountain Brook and Decatur. Straight-line distance: 26.09 mi (41.98 km).
#1 Mountain Brook
City in southeastern Jefferson County, Alabama
| Population | 20,034 |
| Coordinates | 34.7250900, -86.5477700 |
| Altitude | 226 |
| Country | United States |
#2 Decatur
The most populous city in Morgan County, Alabama.
| Population | 54,381 |
| Coordinates | 34.6059300, -86.9833400 |
| Altitude | 171 |
| Country | United States |
End: (-86.983514, 34.605804)
Estimated Travel Time
Distance: 45 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 33m |
| 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.