Saint Peters, MO to Windsor, MO is 188.1 miles and takes about 3h 44m via I 70 and US 65, with a fuel budget near $29 and enough daylight to finish in a day. This route stays within the Midwest region, specifically crossing Missouri for its entirety. Given its predominantly highway nature and manageable distance, it's a straightforward trip suitable for a single day. You'll mainly be on interstates before transitioning to U.S. highways as you approach your destination. Plan for a day of steady driving through the heart of the state.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Break Rhythm
1 planned break
A short stop every 2 to 3 hours is enough for this drive.
Midpoint
94 miles from Saint Peters, MO
A natural place for your longest stop of the day
, about 1h 48m into the drive
.
Main Roads
Road
Distance
Duration
I 70
143.6 mi
2h 45m
US 65
30.5 mi
38m
Whiteman Road
13.7 mi
20m
South Main Street
—
—
Some road-level metrics are being recalculated.
Longest stretch:
I 70
— 143.6 mi, about 2h 45m
Turn-by-Turn Driving Directions
Step-by-step road directions between Saint Peters, MO and Windsor, MO.
1
Start on I 70
144 mi·2 hr 45 min·I 70
Use the straight / slight right lanes.
2
Take the exit
0.2 mi·37 sec
Exit 78AToward US 65 South: Sedalia
3
Merge onto US 65
31 mi·38 min·US 65
4
Take the exit
188 ft·5 sec
Toward MO 52 West: Windsor
5
Turn right onto MO 52
14 mi·20 min·Whiteman Road
6
Arrive at destination
MO 52
Trip Plan
For this 1-day trip covering 188.1 miles, leaving in the morning is ideal to maximize daylight. The longest stretch is 143.6 miles on I 70, so consider a fuel stop before embarking on that section. While there's only one recommended stop, you'll want to be mindful of your fuel gauge, especially after leaving the interstate. With a 3h 44m estimated drive time and a $29 fuel cost, this trip is very flexible. A practical tip is to ensure you have enough gas before you hit the 143-mile stretch on I 70, as services might be less frequent than you'd expect on a major interstate.
Morning Departure
An early start around 7-8 AM gets you there with plenty of daylight left.
Evening Departure
A late afternoon start means arriving after dark. Morning is better.
You can normally do this drive in one day.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 94 miles from Saint Peters, MO, or about 1h 48m into the drive.
The longest continuous stretch on this route runs about 143.6 miles.
This is a comfortable same-day trip.
Departure
Before you leave
Start with fuel, water, and navigation already sorted so the first hour feels easy.
First stop
Around 41 miles or 47m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 94 miles or 1h 48m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 2h 59m
Traffic, exits, and arrival timing usually matter more near Windsor, MO than in the middle of the route.
Before You Leave
+
Open the route before leaving Saint Peters, MO so your first major turns are already loaded.
+
Leave with enough water and a charging cable within reach, not packed away.
+
Check your fuel range against the first long segment, especially if you are starting outside city service areas.
Day 1
Settle into the route from Saint Peters, MO
This is one driving day of about 188.1 miles and 3h 44m.
Your first comfortable stop window is around 41 miles from Saint Peters, MO.
This route can stay practical as a one-day drive if traffic stays reasonable.
Plan about 1 real break rather than only quick fuel stops.
The longest stretch is on I 70 for about 143.6 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Place data sourced from public business listings. Hours and availability may vary.
Heads-up: tricky spots
4 of 4
4 decision points cluster between mile 0 and 174.4 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
3
0 mi into trip|~0m in|I 70
Depart onto I 70
Lane positioning matters here
Use the straight / slight right lanes.
5
143.6 mi into trip|~2h 45m in
Take the exit toward US 65 South: Sedalia
Exit ramp - move to the correct lane early
Exit 78A
Toward US 65 South: Sedalia
3
143.8 mi into trip|~2h 45m in|US 65
Merge onto US 65
Merge point - match speed before joining
4
174.4 mi into trip|~3h 24m in
Take the exit toward MO 52 West: Windsor
Exit ramp - move to the correct lane early
Toward MO 52 West: Windsor
Fuel & Cost
Regular Gas
$29.41 one way
$58.81 round trip
$3.97/gal25.4 MPG avg66 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.36
$32.29
$64.58
premium
$4.89
$36.20
$72.40
diesel
$5.61
$41.53
$83.06
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$29
Meals
$25–$50
Total
$54–$79
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 65.8 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $20 in charging
· 0 stops
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
56.4
0
$19.75
$9.03
Efficient EV
47
0
$16.46
$7.52
EV Truck/SUV
75.2
0
$26.33
$12.04
Gas CO2
66 kg
EV CO2
22 kg (67% less)
This trip is well within single-charge range for most EVs. No charging stops needed if you start fully charged.
DC fast charging avg $0.35/kWh. Home charging avg $0.16/kWh. US grid CO2: 0.39 kg/kWh.
Travel Intel
Current conditions at both ends of the drive.
Forecast as of Apr 20, 2026
Origin
Saint Peters, MO
Morning
in Saint Peters on Tuesday
Local time
10:13 AM
CDT
Current temp
71°F
Unavailable
Live forecast
Destination
Windsor, MO
Morning
in Windsor on Tuesday
Local time
10:13 AM
CDT
Current temp
67°F
Unavailable
Live forecast
Seasonal Notes
Summer travel usually means heavier construction, hotter rest stops, and busier weekend traffic around major cities.
Winter travel shortens daylight, so a route that looks manageable on paper can feel much longer after dark.
Holiday weekends tend to make both departure and arrival windows slower than the raw route time suggests.
Time zone
Same local time
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
4 degrees cooler at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
3h 44m on the road
Use the two city cards together: check the sky where you start, then compare it with the local time and temperature at arrival.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
National Parks Near This Route
Worth a detour if your schedule allows.
Gateway Arch National Park
National Park
Gateway Arch National Park commemorates President Jefferson’s vision of a continental nation, the individuals and cultural groups who helped shape its history, St. Louis’ role in westward expansion, a...
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
This drive is mostly highway, with 93% of the 188.1 miles on major roads like I 70 and US 65. You'll experience a long stretch of 143.6 miles on I 70, which means consistent cruising with relatively few exits for a significant portion of the trip. As you transition to US 65 and then Whiteman Road, expect a change from interstate speeds to more typical surface road driving as you get closer to Windsor. The shift from high-speed interstate to two-lane roads will be noticeable.
93% highway — fuel and pacing are the main things to plan.
6 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 143.6 mi on I 70.
How Hard Is This Drive?
1/10
This is a straightforward highway drive that stays mostly on I 70 and US 65. Navigation is very simple - set it and forget it for most of the drive. The trickiest moment comes early in the drive near I 70.
Driving Effort1/10
Very easy - short and simple to drive
Balances navigation complexity with total wheel time.
The drive from Saint Peters, MO to Windsor, MO is easy. At 3h 44m with 93% highway, most drivers will find it relaxed and low-stress.
Where does it get tricky?
The main spots that need attention: near the start (I 70): Lane positioning matters here; at 143.6 miles: Exit ramp - move to the correct lane early; at 143.8 miles (US 65): Merge point - match speed before joining.
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 3h 44m. Total distance: 188.1 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
The longest stretch is about 143.6 miles on I 70. The full list of main roads is in the Roads section above.
Yes — we found about 20 rest areas or service plazas within a short detour of the route (from OpenStreetMap). See the Rest Stops tab under Nearby Places for locations and mile markers. Plan to stretch, use the bathroom, and top off fluids every 2–3 hours on longer drives.
Yes, with realistic expectations. Build in a stop roughly every 2 hours, have snacks and activities ready, and check the Nearby Places tabs for kid-friendly stops along the way.
The main spots that need attention: near the start (I 70): Lane positioning matters here; at 143.6 miles: Exit ramp - move to the correct lane early; at 143.8 miles (US 65): Merge point - match speed before joining.
Yes — Gateway Arch National Park. See the National Parks section for detour distances and tips on detours.
Possible but tiring. At 3.7 hours each way, an in-and-out day trip would put you behind the wheel for 7.5 hours — manageable with a long break at Windsor, MO, but most travelers stay overnight.
