How far is Saint Peters, MO from Grain Valley, MO?
The driving distance from Saint Peters, MO to Grain Valley, MO is about 197.8 miles (318.4 km), with a travel time of about 03h 44m by car.
- The straight-line flight distance is about 192.6 miles (310 km).
- For a round trip, plan for roughly 07h 29m 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 44m.
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.
The most populous city in the state of Missouri.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Chance Showers And Thunderstorms then Partly Sunny
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Saint Peters and Grain Valley.
Turn-by-Turn Driving Directions
Step-by-step road directions between Saint Peters and Grain Valley.
-
1
Start on the route
197.1 mi · 3 hr 43 min
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2
Take the exit slight right toward MO AA, US 40, MO BB: Grain Valley, Buckner
1126 ft · 34 sec
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3
Turn left onto North Main Street
2530 ft · 1 min · North Main Street
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4
Turn right onto West Front Street
30 m · 4 sec · West Front Street
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5
Arrive at your destination
0 m · 1 sec · West Front Street
Car Route Details
A richer read on the saved driving route between Saint Peters and Grain Valley.
Straightforward drive
The saved road route has a manageable number of maneuvers and should be easy to follow with normal attention to signs.
Longest stretch
Start on the route
197 mi · 03h 43m
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 Showers And Thunderstorms then Partly Sunny leaving Saint Peters and Mostly Sunny near Grain Valley.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Saint Peters to Grain Valley?
The road trip is about 197.8 miles (318.4 km) and usually takes 03h 44m 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?
Columbia is a useful midpoint, sitting about 98.7 miles from Saint Peters and 99.2 miles from Grain Valley.
How much longer is the road route than the straight-line distance?
The direct path is about 192.6 miles (310 km), while the road route adds roughly 5.2 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 9:30 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $26.32 one way or $52.64 round trip. Estimated CO2 is about 62 kg one way.
What should you check before leaving?
Before you leave, expect Chance Showers And Thunderstorms then Partly Sunny around Saint Peters and Mostly Sunny near Grain Valley.
Stop Ideas Near Columbia
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 Columbia.
Jefferson City
Sedalia
Hermann
Flight Path Map
This map shows the direct air route between Saint Peters and Grain Valley. Straight-line distance: 192.61 mi (309.98 km).
#1 Saint Peters
The most populous city in St.
| Population | 58,043 |
| Coordinates | 38.8003300, -90.6265100 |
| Altitude | 134 |
| Country | United States |
#2 Grain Valley
City in Jackson County, Missouri, United States
| Population | 14,827 |
| Coordinates | 39.0150100, -94.1985600 |
| Altitude | 242 |
| Country | United States |
End: Grain Valley (-94.19856, 39.01501)
Estimated Travel Time
Distance: 318 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 06h 35m |
| 40 mph (64.37 km/h) | 04h 56m |
| 50 mph (80.47 km/h) | 03h 57m |
| 60 mph (96.56 km/h) | 03h 17m |
| 70 mph (112.65 km/h) | 02h 49m |
| 80 mph (129 km/h) | 02h 28m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $26.32 | $52.64 |
| Mid-grade | $4.25 | $29.69 | $59.37 |
| Premium | $4.65 | $32.48 | $64.97 |
| Diesel | $5.30 | $37.02 | $74.04 |
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 · Jun 01, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.