How far is Saint Peters, MO from Saint Robert, MO?
The driving distance from Saint Peters, MO to Saint Robert, MO is about 130.9 miles (210.7 km), with a travel time of about 02h 38m by car.
- The straight-line flight distance is about 107.6 miles (173.2 km).
- For a round trip, plan for roughly 05h 17m 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 02h 38m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
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 Missouri
Route Weather Snapshot
Check the forecast at both ends before you head out.
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
Showers And Thunderstorms Likely
Driving Route Map
The map below follows the saved road route between Saint Peters and Saint Robert.
Turn-by-Turn Driving Directions
Step-by-step road directions between Saint Peters and Saint Robert.
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1
Start on the route
3 mi · 4 min
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2
Take the exit slight right toward MO K: O'Fallon, Main Street
119 m · 8 sec
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3
Turn straight onto East Terra Lane
1.4 km · 2 min · East Terra Lane
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4
Turn slight left
19 m · 2 sec
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5
Continue straight
3.1 mi · 6 min
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6
Continue straight
3.4 mi · 5 min
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7
Take the ramp slight right toward I 64 East, US 40 East, US 61 South
1523 ft · 22 sec
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8
Merge slight left onto Avenue of the Saints
3.7 mi · 5 min · Avenue of the Saints
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9
Take the exit slight right toward Chesterfield Airport Road
2700 ft · 58 sec
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10
Continue on Chesterfield Airport Road
110 m · 7 sec · Chesterfield Airport Road
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11
Turn right onto Olive Street Road
64 m · 5 sec
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12
Turn right onto Olive Street Road
1.5 km · 2 min · Olive Street Road
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13
Continue on North Eatherton Road
2.4 mi · 5 min · North Eatherton Road
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14
Enter the roundabout and take exit 2 toward the route
21 m · 1 sec
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15
Exit the roundabout
4.3 mi · 7 min
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16
Enter the roundabout and take exit 2 toward the route
29 m · 2 sec
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17
Exit the roundabout
2098 ft · 45 sec
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18
Enter the roundabout and take exit 2 toward MO 100 West: Gray Summit
23 m · 2 sec
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19
Exit the roundabout onto MO 100 West: Gray Summit
1202 ft · 33 sec
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20
Merge slight left
13.3 mi · 19 min
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21
Take the exit slight right toward I 44 West, US 50 West: St. Clair
1157 ft · 14 sec
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22
Merge slight left
93.3 mi · 1 hr 41 min
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23
Take the exit slight right toward I 44 Business: Waynesville
1099 ft · 23 sec
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24
Turn straight
2769 ft · 57 sec
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25
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Saint Peters and Saint Robert.
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 44 West
Merge slight left
93.3 mi · 01h 41m
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.
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms leaving Saint Peters and Showers And Thunderstorms Likely near Saint Robert.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Saint Peters to Saint Robert?
The road trip is about 130.9 miles (210.7 km) and usually takes 02h 38m 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?
Sullivan is a useful midpoint, sitting about 65.4 miles from Saint Peters and 65.5 miles from Saint Robert.
How much longer is the road route than the straight-line distance?
The direct path is about 107.6 miles (173.2 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 1:12 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $17.42 one way or $34.84 round trip. Estimated CO2 is about 41.1 kg one way.
What should you check before leaving?
Before you leave, expect Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms around Saint Peters and Showers And Thunderstorms Likely near Saint Robert.
Stop Ideas Near Sullivan
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 Sullivan.
Washington
Hermann
Kirkwood
Gateway Transportation Center
Flight Path Map
This map shows the direct air route between Saint Peters and Saint Robert. Straight-line distance: 107.63 mi (173.21 km).
#1 Saint Peters
The most populous city in St.
| Population | 58,043 |
| Coordinates | 38.8003300, -90.6265100 |
| Altitude | 134 |
| Country | United States |
#2 Saint Robert
City in Pulaski County, Missouri, United States
| Population | 6,358 |
| Coordinates | 37.8281000, -92.1776700 |
| Altitude | 317 |
| Country | United States |
End: Saint Robert (-92.17767, 37.8281)
Estimated Travel Time
Distance: 211 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 04h 21m |
| 40 mph (64.37 km/h) | 03h 16m |
| 50 mph (80.47 km/h) | 02h 37m |
| 60 mph (96.56 km/h) | 02h 10m |
| 70 mph (112.65 km/h) | 01h 52m |
| 80 mph (129 km/h) | 01h 37m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $17.42 | $34.84 |
| Mid-grade | $4.25 | $19.65 | $39.30 |
| Premium | $4.65 | $21.50 | $43.00 |
| Diesel | $5.30 | $24.50 | $49.01 |
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 Missouri · May 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.