How far is Tulsa, OK from Duncan, OK?
The driving distance from Tulsa, OK to Duncan, OK is about 186.2 miles (299.6 km), with a travel time of about 03h 26m by car.
- The straight-line flight distance is about 159 miles (255.9 km).
- For a round trip, plan for roughly 06h 52m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 AM CDT.
Reverse, save, or send this route
This drive is better planned with a longer stop or an overnight stay. Copy the route link, send it to another device, or print a clean version before you head out.
This drive is better planned with a longer stop or an overnight stay.
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 03h 26m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
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.
Town in Oklahoma County, Oklahoma, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Cloudy then Slight Chance Showers And Thunderstorms
Mostly Cloudy
Driving Route Map
The map below follows the saved road route between Tulsa and Duncan.
Turn-by-Turn Driving Directions
Step-by-step road directions between Tulsa and Duncan.
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1
Start on South Boulder Avenue West
1532 ft · 1 min · South Boulder Avenue West
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2
Turn right onto West 6th Street
1958 ft · 1 min · West 6th Street
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3
Continue on West 7th Street
1486 ft · 55 sec · West 7th Street
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4
Take the ramp straight toward I 244 West, US 75 South
973 ft · 24 sec
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5
Merge slight left onto Martin Luther King, Junior Memorial Expressway
2.3 mi · 3 min · Martin Luther King, Junior Memorial Expressway
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6
Keep slight right to continue on Martin Luther King, Junior Memorial Expressway
2.6 mi · 3 min · Martin Luther King, Junior Memorial Expressway
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7
Merge slight left onto Skelly Bypass
1.2 km · 56 sec · Skelly Bypass
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8
Continue on Governor Roy Joseph Turner Turnpike
86.6 mi · 1 hr 26 min · Governor Roy Joseph Turner Turnpike
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9
Take the exit slight left toward I 35 South, I 44 West, OK 66 West: Dallas, Lawton
2379 ft · 58 sec
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10
Merge slight right onto World War II Veterans Memorial Highway
4.2 mi · 5 min · World War II Veterans Memorial Highway
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11
Keep slight right to continue on Will Rogers Expressway
15.6 mi · 19 min · Will Rogers Expressway
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12
Keep slight right to continue on Will Rogers Expressway
7.9 mi · 9 min · Will Rogers Expressway
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13
Continue on Harry E. Bailey Turnpike
26.6 mi · 25 min · Harry E. Bailey Turnpike
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14
Take the exit slight right toward US 81, US 277: Duncan, Chickasha
1658 ft · 49 sec
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15
Turn left onto US 81 South, US 277 South: Duncan
11.8 mi · 15 min
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16
Continue straight
22.9 mi · 30 min
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17
Continue straight
2867 ft · 52 sec
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18
Continue straight
627 ft · 11 sec
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19
Continue straight
2909 ft · 55 sec
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20
Continue straight
1659 ft · 28 sec
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21
Continue straight
1.5 km · 2 min
-
22
Turn left onto West Main Street
3031 ft · 1 min · West Main Street
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23
Turn left onto North 9th Street
47 m · 7 sec · North 9th Street
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24
Arrive at your destination
0 m · 1 sec · North 9th Street
Car Route Details
A richer read on the saved driving route between Tulsa and Duncan.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Governor Roy Joseph Turner Turnpike
Continue on Governor Roy Joseph Turner Turnpike
86.6 mi · 01h 26m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A longer out-and-back drive
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
Mostly Cloudy then Slight Chance Showers And Thunderstorms leaving Tulsa and Mostly Cloudy near Duncan.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Tulsa to Duncan?
The road trip is about 186.2 miles (299.6 km) and usually takes 03h 26m in normal driving conditions.
Is this a same-day trip or an overnight route?
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
What is the halfway point on this route?
Lake Aluma is a useful midpoint, sitting about 93.1 miles from Tulsa and 93.1 miles from Duncan.
How much longer is the road route than the straight-line distance?
The direct path is about 159 miles (255.9 km), while the road route adds roughly 27.2 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 6:00 AM to 8:00 AM CDT. If you want a more comfortable same-day return, try to leave by 10:08 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $24.88 one way or $49.76 round trip. Estimated CO2 is about 58.4 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Cloudy then Slight Chance Showers And Thunderstorms around Tulsa and Mostly Cloudy near Duncan.
Stop Ideas Near Lake Aluma
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Lake Aluma.
Santa Fe Depot
Norman
Guthrie, OK
Purcell
Flight Path Map
This map shows the direct air route between Tulsa and Duncan. Straight-line distance: 159.03 mi (255.93 km).
#1 Tulsa
The second most populous city in Oklahoma and the center of the Tulsa metropolitan area.
| Population | 403,166 |
| Coordinates | 36.1539800, -95.9927700 |
| Altitude | 220 |
| Country | United States |
#2 Duncan
City in Oklahoma
| Population | 22,259 |
| Coordinates | 34.5023000, -97.9578100 |
| Altitude | 342 |
| Country | United States |
End: Duncan (-97.95781, 34.5023)
Estimated Travel Time
Distance: 300 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 06h 12m |
| 40 mph (64.37 km/h) | 04h 39m |
| 50 mph (80.47 km/h) | 03h 43m |
| 60 mph (96.56 km/h) | 03h 06m |
| 70 mph (112.65 km/h) | 02h 39m |
| 80 mph (129 km/h) | 02h 19m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.79 | $24.88 | $49.76 |
| Mid-grade | $4.26 | $27.98 | $55.96 |
| Premium | $4.63 | $30.39 | $60.77 |
| Diesel | $5.42 | $35.58 | $71.15 |
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 Oklahoma · 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.