How far is Lafayette, LA from Donaldsonville, LA?
The driving distance from Lafayette, LA to Donaldsonville, LA is about 85.2 miles (137.1 km), with a travel time of about 01h 45m by car.
- The straight-line flight distance is about 61.9 miles (99.6 km).
- For a round trip, plan for roughly 03h 31m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM CDT.
Reverse, save, or send this route
This route works well as a day trip with time at the destination. Copy the route link, send it to another device, or print a clean version before you head out.
This route works well as a day trip with time at the destination.
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 01h 45m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
This departure sits inside the recommended comfort window for the route.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
Human settlement in Louisiana, United States of America
Route Weather Snapshot
Check the forecast at both ends before you head out.
Partly Sunny
Partly Sunny
Driving Route Map
The map below follows the saved road route between Lafayette and Donaldsonville.
Turn-by-Turn Driving Directions
Step-by-step road directions between Lafayette and Donaldsonville.
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1
Start on Rue Vermilion Ouest
102 m · 22 sec · Rue Vermilion Ouest
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2
Turn left onto Rue Jefferson
1654 ft · 51 sec · Rue Jefferson
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3
Continue on Jefferson Boulevard
1447 ft · 47 sec · Jefferson Boulevard
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4
Turn left onto Northeast Evangeline Thruway
1.9 mi · 3 min · Northeast Evangeline Thruway
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5
Take the exit straight toward I 10 East: Baton Rouge
2523 ft · 1 min
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6
Merge slight left
49.8 mi · 57 min
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7
Take the exit slight right toward LA 1: Port Allen, Plaquemine
1232 ft · 23 sec
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8
Keep slight right to continue on LA 1 South: Plaquemine
698 ft · 17 sec
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9
Keep slight left to continue on LA 1 South: Plaquemine
1.1 mi · 1 min
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10
Continue on Highway 1 South
10.4 mi · 16 min · Highway 1 South
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11
Turn slight right onto Eden Street
1.1 mi · 3 min · Eden Street
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12
Continue on Highway 1
18.5 mi · 22 min · Highway 1
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13
Continue on West 10th Street
1.6 km · 1 min · West 10th Street
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14
Arrive at your destination
0 m · 1 sec · West 10th Street
Car Route Details
A richer read on the saved driving route between Lafayette and Donaldsonville.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
I 10 East
Merge slight left
49.8 mi · 00h 57m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A comfortable day-trip route
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
Partly Sunny leaving Lafayette and Partly Sunny near Donaldsonville.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Lafayette to Donaldsonville?
The road trip is about 85.2 miles (137.1 km) and usually takes 01h 45m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
What is the halfway point on this route?
Grosse Tete is a useful midpoint, sitting about 42.6 miles from Lafayette and 42.6 miles from Donaldsonville.
How much longer is the road route than the straight-line distance?
The direct path is about 61.9 miles (99.6 km), while the road route adds roughly 23.3 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 8:00 AM to 10:00 AM CDT. If you want a more comfortable same-day return, try to leave by 2:58 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $11.40 one way or $22.80 round trip. Estimated CO2 is about 26.7 kg one way.
What should you check before leaving?
Before you leave, expect Partly Sunny around Lafayette and Partly Sunny near Donaldsonville.
Stop Ideas Near Grosse Tete
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
City Hall Plaza
Baton Rouge City Hall
City of Baton Rouge Fire Station 15
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Grosse Tete.
Baton Rouge, Louisiana
New Iberia
Lafayette
Hammond
Flight Path Map
This map shows the direct air route between Lafayette and Donaldsonville. Straight-line distance: 61.86 mi (99.55 km).
#1 Lafayette
The third most populous city in Acadiana, Louisiana.
| Population | 126,535 |
| Coordinates | 30.2240900, -92.0198400 |
| Altitude | 11 |
| Country | United States |
#2 Donaldsonville
City in Louisiana, United States
| Population | 8,638 |
| Coordinates | 30.1011400, -90.9941200 |
| Altitude | 7 |
| Country | United States |
End: Donaldsonville (-90.99412, 30.10114)
Estimated Travel Time
Distance: 137 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 02h 50m |
| 40 mph (64.37 km/h) | 02h 07m |
| 50 mph (80.47 km/h) | 01h 42m |
| 60 mph (96.56 km/h) | 01h 25m |
| 70 mph (112.65 km/h) | 01h 13m |
| 80 mph (129 km/h) | 01h 03m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.79 | $11.40 | $22.80 |
| Mid-grade | $4.26 | $12.82 | $25.64 |
| Premium | $4.63 | $13.92 | $27.84 |
| Diesel | $5.42 | $16.30 | $32.60 |
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 Louisiana · Apr 18, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.