Saint Peters, MO to Sparta, MO is 268.1 miles and takes about 5h 6m via I 70, I 435, and I 29, with a fuel budget near $42 and enough daylight to finish in a day. This is a straightforward trip entirely within the Midwest region, connecting two points in Missouri. With 93% of the drive on highways, expect a fairly direct path. It's a good option for a single-day trip, allowing you to get to your destination without needing an overnight stay.
Trip Pace
Same-day drive is realistic
A same-day return is possible, but it will make for a full day on the road.
Break Rhythm
1 planned break
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
134 miles from Saint Peters, MO
A natural place for your longest stop of the day
, about 2h 31m into the drive
.
Main Roads
Road
Distance
Duration
I 70
204.9 mi
3h 51m
I 435
20.9 mi
22m
I 29
18.6 mi
19m
Lamar Hunt Memorial Highway
7.8 mi
9m
Truman/Eisenhower Presidential Highway
5.6 mi
6m
MO 371
4 mi
7m
Clifton J. Scott Memorial Highway
1.8 mi
2m
I435 N
1.3 mi
1m
Longest stretch:
I 70
— 204.9 mi, about 3h 51m
Traffic on I-70
Hour-of-day weekday pattern from 46 FHWA count stations on your route.
Peak
4 PM
~3,284 veh/hr typical
· worst 3,878
Quietest
1 AM
~292 veh/hr
Peak-to-quiet ratio
11.2×
busier at peak than in the quiet hours
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Averaged across 105 weeks of 2023 FHWA Travel Monitoring Analysis System data. Weekday hours only (Mon–Fri).
Turn-by-Turn Driving Directions
Step-by-step road directions between Saint Peters, MO and Sparta, MO.
Exit 8BToward I 435 North, US 24 East: Des MoinesUse the straight / slight right lanes.
7
Merge onto I 435; US 24
7.8 mi·9 min·Lamar Hunt Memorial Highway
8
Continue on I435 N
1.3 mi·1 min·I435 N
9
Continue on I 435
21 mi·22 min·I 435
10
Keep slight left at fork onto I 29; US 71
19 mi·19 min·I 29; US 71
Toward I 29 North, US 71 North: Saint Joseph
11
Take the exit
0.2 mi·31 sec
Exit 35Toward MO DD: Faucett
12
Turn left onto MO DD
1.0 mi·2 min·MO DD
13
At end of road, turn right onto MO 371
4.0 mi·7 min·MO 371
14
Arrive at destination
MO 371
Trip Plan
Given the 5-hour duration, leaving Saint Peters in the morning is ideal to maximize daylight and avoid driving after dark. The fuel cost is estimated at $42, so be sure to budget for that and plan your refueling stops accordingly. Since this is a one-day drive, you have flexibility, but consider a brief stop around the halfway point to stretch your legs. Keep an eye on traffic conditions, especially around the Kansas City metropolitan area where I 70, I 435, and I 29 converge.
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 134 miles from Saint Peters, MO, or about 2h 31m into the drive.
The longest continuous stretch on this route runs about 204.9 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 59 miles or 1h 6m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 134 miles or 2h 31m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 4h 9m
Traffic, exits, and arrival timing usually matter more near Sparta, 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 268.1 miles and 5h 6m.
Your first comfortable stop window is around 59 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 204.9 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
5 of 7
5 decision points cluster between mile 213.1 and 264 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
8
213.1 mi into trip|~4h in
Take the exit toward I 435 North, US 24 East: Des Moines
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Exit 8B
Toward I 435 North, US 24 East: Des Moines
6
244.2 mi into trip|~4h 36m in|I 29; US 71
Keep slight left at fork onto I 29; US 71 toward I 29 North, US 71 North: Saint Joseph
Highway fork - watch signs carefully. Multiple destination signs - pick the right one
Toward I 29 North, US 71 North: Saint Joseph
5
262.8 mi into trip|~4h 56m in
Take the exit toward MO DD: Faucett
Exit ramp - move to the correct lane early
Exit 35
Toward MO DD: Faucett
4
263 mi into trip|~4h 56m in|MO DD
Turn left onto MO DD
Navigation decision point
5
264 mi into trip|~4h 59m in|MO 371
At end of road, turn right onto MO 371
Navigation decision point
Fuel & Cost
Regular Gas
$41.57 one way
$83.13 round trip
$3.94/gal25.4 MPG avg94 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.32
$45.58
$91.15
premium
$4.93
$52.02
$104.03
diesel
$5.60
$59.10
$118.20
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$42
Meals
$25–$50
Total
$67–$92
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 93.8 kg one way.
Prices: EIA weekly data, 2026-08-31.
Driving Electric?
About $28 in charging
· 0 stops
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
80.4
0
$28.15
$12.87
Efficient EV
67
0
$23.46
$10.72
EV Truck/SUV
107.2
1
$37.53
$17.16
Gas CO2
94 kg
EV CO2
31 kg (67% less)
Plan for 0 charging stops, roughly every 270 miles. Allow 25-40 minutes per stop at a DC fast charger.
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 Aug 28, 2026
Origin
Saint Peters, MO
Late night
in Saint Peters on Friday
Local time
2:52 AM
CDT
Current temp
86°F
Mostly Sunny
NE 3 mph0% chanceLive forecast
Destination
Sparta, MO
Late night
in Sparta on Friday
Local time
2:52 AM
CDT
Current temp
85°F
Sunny
SSE 8 mph1% chanceLive forecast
74°F
Marshall, MO
134 mi in
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
1 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
5h 6m on the road
An early start around 7-8 AM gets you there with plenty of daylight left.
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?
You'll be on highways for 93% of this 268.1-mile drive, so expect mostly high-speed cruising. The longest continuous stretch on a highway is 204.9 miles, which will be on I 70. You'll encounter dense exit traffic when merging onto I 435 and I 29 near Kansas City. The transition to surface roads will occur after the main highway portion, likely presenting a more rural feel as you approach Sparta.
93% highway — fuel and pacing are the main things to plan.
14 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 204.9 mi on I 70.
How Hard Is This Drive?
3/10
This is a straightforward highway drive that stays mostly on I 70 and I 435. There are only a few real navigation decisions along the way. The trickiest moment comes around 213.1 miles in.
Driving Effort3/10
Easy - simple navigation with a manageable amount of wheel time
Balances navigation complexity with total wheel time.
This is a straightforward 5h 6m drive. You will face about 7 decision points, but nothing that requires special attention if you follow navigation.
Where does it get tricky?
The main spots that need attention: at 213.1 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 244.2 miles (I 29; US 71): Highway fork - watch signs carefully. Multiple destination signs - pick the right one; at 262.8 miles: Exit ramp - move to the correct lane early.
The longest stretch is about 204.9 miles on I 70. The full list of main roads is in the Roads section above.
We did not find dedicated rest areas on this route. For a drive this long, plan bathroom and stretch breaks around gas stations, fast-food stops, or small-town downtowns — check the Nearby Places section for options.
Only with planning. This is a long drive for kids — consider splitting it into two days rather than pushing through. Plan at least 1 meaningful breaks. Dedicated rest areas are limited, so plan gas or food stops as your bathroom breaks.
The main spots that need attention: at 213.1 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 244.2 miles (I 29; US 71): Highway fork - watch signs carefully. Multiple destination signs - pick the right one; at 262.8 miles: Exit ramp - move to the correct lane early.
Yes — Gateway Arch National Park. See the National Parks section for detour distances and tips on detours.
Not recommended in a single day. At 5.1 hours each way, a round trip means 10.2 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at Sparta, MO before the return drive.
