How far is Jennings, MO from Saint Peters, MO?
The driving distance from Jennings, MO to Saint Peters, MO is about 22.1 miles (35.5 km), with a travel time of about 00h 22m by car.
- The straight-line flight distance is about 20.5 miles (33 km).
- For a round trip, plan for roughly 00h 44m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 7:00 AM to 7:00 PM CDT.
Reverse, save, or send this route
This is an easy same-day return drive. Copy the route link, send it to another device, or print a clean version before you head out.
This is an easy same-day return drive.
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 00h 22m.
This is a short drive, so your comfort window is wide. Traffic and current weather matter more than the clock.
This departure sits inside the recommended comfort window for the route.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Jennings and Saint Peters.
Turn-by-Turn Driving Directions
Step-by-step road directions between Jennings and Saint Peters.
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1
Start on Jennings Station Road
1.1 mi · 2 min · Jennings Station Road
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2
Take the ramp slight right toward I 70 West: Wentzville
1402 ft · 22 sec
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3
Merge slight left
20.7 mi · 26 min
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4
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Jennings and Saint Peters.
Straightforward drive
The saved road route has a manageable number of maneuvers and should be easy to follow with normal attention to signs.
I 70 West
Merge slight left
20.7 mi · 00h 26m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A short regional drive
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
Sunny leaving Jennings 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 Jennings to Saint Peters?
The road trip is about 22.1 miles (35.5 km) and usually takes 00h 22m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
What is the halfway point on this route?
Bridgeton is a useful midpoint, sitting about 11 miles from Jennings and 11.1 miles from Saint Peters.
How much longer is the road route than the straight-line distance?
The direct path is about 20.5 miles (33 km), while the road route adds roughly 1.6 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 7:00 AM to 7:00 PM CDT. If you want a more comfortable same-day return, try to leave by 7:46 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $2.94 one way or $5.88 round trip. Estimated CO2 is about 6.9 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Jennings and Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms near Saint Peters.
Stop Ideas Near Bridgeton
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 Bridgeton.
Kirkwood
Gateway Transportation Center
Alton
Washington
Flight Path Map
This map shows the direct air route between Jennings and Saint Peters. Straight-line distance: 20.51 mi (33 km).
#1 Jennings
City in St.
| Population | 14,644 |
| Coordinates | 38.7192200, -90.2603900 |
| Altitude | 158 |
| 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: 35 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 44m |
| 40 mph (64.37 km/h) | 00h 33m |
| 50 mph (80.47 km/h) | 00h 26m |
| 60 mph (96.56 km/h) | 00h 22m |
| 70 mph (112.65 km/h) | 00h 18m |
| 80 mph (129 km/h) | 00h 16m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $2.94 | $5.88 |
| Mid-grade | $4.25 | $3.32 | $6.63 |
| Premium | $4.65 | $3.63 | $7.26 |
| Diesel | $5.30 | $4.14 | $8.27 |
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 12, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.