How far is Marion, IA from Sergeant Bluff, IA?
The driving distance from Marion, IA to Sergeant Bluff, IA is about 266.7 miles (429.2 km), with a travel time of about 05h 14m by car.
- The straight-line flight distance is about 244.9 miles (394.2 km).
- For a round trip, plan for roughly 10h 28m 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 05h 14m.
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.
City in Iowa
Route Weather Snapshot
Check the forecast at both ends before you head out.
Chance Rain Showers
Showers And Thunderstorms Likely
Driving Route Map
The map below follows the saved road route between Marion and Sergeant Bluff.
Turn-by-Turn Driving Directions
Step-by-step road directions between Marion and Sergeant Bluff.
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1
Start on 8th Avenue
136 m · 23 sec · 8th Avenue
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2
Turn left onto 10th Street
98 m · 13 sec · 10th Street
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3
Turn right onto 7th Avenue
880 ft · 22 sec · 7th Avenue
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4
Enter the roundabout and take exit 2 toward the route
31 m · 4 sec
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5
Exit the roundabout
40 m · 6 sec
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6
Continue on 7th Avenue
1828 ft · 48 sec · 7th Avenue
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7
Continue on Marion Boulevard
1 km · 1 min · Marion Boulevard
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8
Continue on 1st Avenue East
621 ft · 19 sec · 1st Avenue East
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9
Turn right onto Collins Road Northeast
2.2 mi · 3 min · Collins Road Northeast
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10
Take the exit slight right toward I-380, IA 27: Iowa City, Waterloo
2548 ft · 1 min
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11
Keep slight right to continue on I-380 north, IA 27 north: Waterloo
2156 ft · 42 sec
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12
Keep slight left
87 m · 7 sec
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13
Continue on I-380 south, IA 27 south: Waterloo
1093 ft · 27 sec
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14
Merge slight left onto Avenue of the Saints
46.6 mi · 51 min · Avenue of the Saints
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15
Keep slight left to continue on Avenue of the Saints
160.2 mi · 3 hr 5 min · Avenue of the Saints
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16
Continue on 160th Street
6.4 mi · 7 min · 160th Street
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17
Continue on United States Highway 20
1.9 mi · 3 min · United States Highway 20
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18
Continue on Highway 20
34.3 mi · 41 min · Highway 20
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19
Turn left onto Delaware Avenue
4.3 mi · 6 min · Delaware Avenue
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20
Continue on Maple Street
1615 ft · 50 sec · Maple Street
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21
Continue on Front Street
1112 ft · 30 sec · Front Street
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22
Continue on Bronson Blacktop
1.1 mi · 2 min · Bronson Blacktop
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23
Turn right onto Old Highway 141
2649 ft · 48 sec · Old Highway 141
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24
Turn left onto 210th Street
4.9 mi · 7 min · 210th Street
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25
Continue on 1st Street
1.1 km · 2 min · 1st Street
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26
Turn right onto South Lewis Boulevard
1429 ft · 40 sec · South Lewis Boulevard
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27
Turn left onto 4th Street
119 m · 17 sec · 4th Street
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28
Arrive at your destination
0 m · 1 sec · 4th Street
Car Route Details
A richer read on the saved driving route between Marion and Sergeant Bluff.
Straightforward drive
The saved road route has a manageable number of maneuvers and should be easy to follow with normal attention to signs.
Avenue of the Saints
Keep slight left to continue on Avenue of the Saints
160 mi · 03h 05m
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.
Chance Rain Showers leaving Marion and Showers And Thunderstorms Likely near Sergeant Bluff.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Marion to Sergeant Bluff?
The road trip is about 266.7 miles (429.2 km) and usually takes 05h 14m 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?
Webster City is a useful midpoint, sitting about 133 miles from Marion and 133.7 miles from Sergeant Bluff.
How much longer is the road route than the straight-line distance?
The direct path is about 244.9 miles (394.2 km), while the road route adds roughly 21.8 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 6:32 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $35.49 one way or $70.97 round trip. Estimated CO2 is about 83.6 kg one way.
What should you check before leaving?
Before you leave, expect Chance Rain Showers around Marion and Showers And Thunderstorms Likely near Sergeant Bluff.
Flight Path Map
This map shows the direct air route between Marion and Sergeant Bluff. Straight-line distance: 244.92 mi (394.16 km).
#1 Marion
The county seat of Linn County, Iowa.
| Population | 40,780 |
| Coordinates | 42.0341700, -91.5976800 |
| Altitude | 259 |
| Country | United States |
#2 Sergeant Bluff
City in Woodbury County, Iowa, United States of America
| Population | 5,119 |
| Coordinates | 42.4038800, -96.3586400 |
| Altitude | 334 |
| Country | United States |
End: Sergeant Bluff (-96.35864, 42.40388)
Estimated Travel Time
Distance: 429 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 08h 53m |
| 40 mph (64.37 km/h) | 06h 40m |
| 50 mph (80.47 km/h) | 05h 20m |
| 60 mph (96.56 km/h) | 04h 26m |
| 70 mph (112.65 km/h) | 03h 48m |
| 80 mph (129 km/h) | 03h 19m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $35.49 | $70.97 |
| Mid-grade | $4.25 | $40.02 | $80.04 |
| Premium | $4.65 | $43.79 | $87.59 |
| Diesel | $5.30 | $49.91 | $99.82 |
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 Iowa · Apr 30, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.