How far is Saint Clair, MO from Saint Peters, MO?
The driving distance from Saint Clair, MO to Saint Peters, MO is about 62.4 miles (100.5 km), with a travel time of about 01h 01m by car.
- The straight-line flight distance is about 36.8 miles (59.2 km).
- For a round trip, plan for roughly 02h 02m 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 01m.
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.
Township in Harrison County, Missouri, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Slight Chance Rain Showers
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Saint Clair and Saint Peters.
Turn-by-Turn Driving Directions
Step-by-step road directions between Saint Clair and Saint Peters.
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1
Start on South Main Street
1.2 mi · 3 min · South Main Street
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2
Take the ramp slight right toward I 44 East: Saint Louis
1554 ft · 39 sec
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3
Merge slight left
12.5 mi · 13 min
-
4
Take the exit slight right toward I 44 Business, MO 100 East: Gray Summit
970 ft · 28 sec
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5
Turn left onto Manchester Road
13.4 mi · 19 min · Manchester Road
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6
Take the exit slight right toward MO 109
1108 ft · 31 sec
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7
Enter the roundabout and take exit 3 toward the route
68 m · 4 sec
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8
Exit the roundabout
157 m · 11 sec
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9
Enter the roundabout and take exit 1 toward the route
30 m · 2 sec
-
10
Exit the roundabout
2129 ft · 45 sec
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11
Enter the roundabout and take exit 2 toward the route
29 m · 2 sec
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12
Exit the roundabout
4.3 mi · 7 min
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13
Enter the roundabout and take exit 2 toward South Eatherton Road
29 m · 1 sec · South Eatherton Road
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14
Exit the roundabout onto South Eatherton Road
2.4 mi · 5 min · South Eatherton Road
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15
Continue on Olive Street Road
1.5 km · 2 min · Olive Street Road
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16
Take the ramp left toward Chesterfield Airport Road
1.1 km · 1 min · Chesterfield Airport Road
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17
Merge slight left onto Avenue of the Saints
2.7 mi · 3 min · Avenue of the Saints
-
18
Take the exit slight right toward MO 94: Defiance, Saint Charles
1013 ft · 16 sec
-
19
Keep slight right to continue on MO 94 East: Saint Charles
95 m · 5 sec
-
20
Merge slight left
3.4 mi · 5 min
-
21
Keep slight right to continue on Mid Rivers Mall Drive, Pitman Hill Road
1056 ft · 22 sec
-
22
Turn left onto Mid Rivers Mall Drive
4.7 mi · 10 min · Mid Rivers Mall Drive
-
23
Take the ramp straight toward I 70 West: Wentzville
1419 ft · 20 sec
-
24
Merge slight left
146 m · 7 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 Clair and Saint Peters.
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.
Manchester Road
Turn left onto Manchester Road
13.4 mi · 00h 19m
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 leaving Saint Clair and Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms near Saint Peters.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Saint Clair to Saint Peters?
The road trip is about 62.4 miles (100.5 km) and usually takes 01h 01m 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?
Fox Creek is a useful midpoint, sitting about 24.2 miles from Saint Clair and 38.3 miles from Saint Peters.
How much longer is the road route than the straight-line distance?
The direct path is about 36.8 miles (59.2 km), while the road route adds roughly 25.6 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 4:28 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $8.30 one way or $16.59 round trip. Estimated CO2 is about 19.6 kg one way.
What should you check before leaving?
Before you leave, expect Slight Chance Rain Showers around Saint Clair and Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms near Saint Peters.
Stop Ideas Near Fox Creek
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
City Hall Park
Wildwood City Hall
Swingley Ridge @ Chesterfield City Hall SB
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Fox Creek.
Kirkwood
Washington
Gateway Transportation Center
Alton
Flight Path Map
This map shows the direct air route between Saint Clair and Saint Peters. Straight-line distance: 36.81 mi (59.24 km).
#1 Saint Clair
City in Franklin County, Missouri, United States
| Population | 4,689 |
| Coordinates | 38.3453300, -90.9809700 |
| Altitude | 234 |
| Country | United States |
#2 Saint Peters
The most populous city in St.
| Population | 58,043 |
| Coordinates | 38.8003300, -90.6265100 |
| Altitude | 134 |
| Country | United States |
End: I 70 West (-90.626511, 38.800311)
Estimated Travel Time
Distance: 101 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 02h 04m |
| 40 mph (64.37 km/h) | 01h 33m |
| 50 mph (80.47 km/h) | 01h 14m |
| 60 mph (96.56 km/h) | 01h 02m |
| 70 mph (112.65 km/h) | 00h 53m |
| 80 mph (129 km/h) | 00h 46m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $8.30 | $16.59 |
| Mid-grade | $4.25 | $9.36 | $18.71 |
| Premium | $4.65 | $10.24 | $20.48 |
| Diesel | $5.30 | $11.67 | $23.34 |
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.