Origin
Saint Peters, MO
Late night in Saint Peters on Wednesday
Local time
5:20 AM
CDT
Current temp
54°F
Unavailable
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Drive Time
2h 50m
Distance
147.9 mi
238 km
Drive Score
9/10
Great drive
Same Day?
Yes, doable
Fuel Cost
$23
one way
EV Charging
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station data
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Saint Peters, MO
Wikimedia Commons
Chaffee, MO
life vibes
This 147.9-mile journey from Saint Peters, MO to Chaffee, MO takes approximately 2 hours and 50 minutes. Designed as a single-day trip, you can complete it without needing an overnight stop. The estimated fuel cost for this drive is around $23. You'll primarily be on the Police Officer Steven Jarvis Memorial Highway, I-270, and I-70. This route offers a practical drive through the Midwest region of Missouri. Consider this a straightforward trip suitable for a day's travel, with a single recommended stop.
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
74 miles from Saint Peters, MO
A natural place for your longest stop of the day , about 1h 26m into the drive .
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With a 24% highway share, this route leans more towards a turn-heavy local drive than a high-speed interstate cruise. The longest uninterrupted stretch you'll experience is 101 miles on the Police Officer Steven Jarvis Memorial Highway, offering a significant period of consistent travel. Expect the road to transition, blending some faster highway sections with more local road driving. This character means you'll need to stay engaged with varying speed limits and potential turns as you make your way south.
Expect a hands-on drive with frequent turns and local roads rather than long highway stretches. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 1.2 miles in.
High effort - long or complex enough to need steady focus all day
This is a demanding drive. With 20 significant decision points across 147.9 miles, you will need to stay alert — especially through interchange areas and urban stretches. Consider splitting it into segments if you are not comfortable with fast highway navigation.
Where does it get tricky?
The main spots that need attention: at 1.2 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 13.6 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 13.8 miles: Highway fork - watch signs carefully. Lane positioning matters here.
These are the spots where you need to pay the most attention. Preview them before you drive.
Take the exit toward MO 79: Elsberry, Louisiana
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Take the exit toward I 270: Chicago, Memphis
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Keep slight right at fork toward I 270 South: Memphis
Highway fork - watch signs carefully. Lane positioning matters here
Take the exit toward I 55, US 61, US 67: Saint Louis, Memphis, Lemay Ferry Road
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Keep slight right at fork toward MO AB: Cape Girardeau Regional Airport
Highway fork - watch signs carefully
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Saint Peters, MO and Chaffee, MO, road signs point toward Memphis and Mo Ab: Cape Girardeau Regional Airport.
Memphis
Mo Ab: Cape Girardeau Regional Airport
| Road | Distance | Duration |
|---|---|---|
| Police Officer Steven Jarvis Memorial Highway | 101 mi | 1h 48m |
| I 270 | 19 mi | 23m |
| I 70 | 13 mi | 16m |
| Nash Road | 5.6 mi | 7m |
| MO 77 | 2.9 mi | 5m |
| Officer Thomas G. Smith, Jr. Memorial Highway | 1.8 mi | 2m |
| Rosa Parks Highway | 1.5 mi | 1m |
| West Yoakum Avenue | 0.8 mi | 1m |
Step-by-step road directions between Saint Peters, MO and Chaffee, MO.
Start on I 70
Take the exit
Keep slight left at fork
Turn left onto MO 79
Take the ramp
Merge onto I 70
Take the exit
Keep slight right at fork
Continue on this road
Merge onto I 270
Take the exit
Keep slight right at fork
Merge onto I 55
Continue on I 55
Continue on I 55
Take the exit
Keep slight right at fork
Turn right onto MO AB
Enter roundabout onto MO 77
Continue on MO 77
Turn left onto MO A
Enter roundabout onto MO A
Continue on MO A
Turn left onto MO M
Arrive at destination
For this 1-day drive, departing in the morning will give you ample time to reach Chaffee with flexibility. The total duration is under 3 hours, so you can easily fit this into a single day without feeling rushed. While only one stop is recommended, factor in breaks as needed, especially during the 101-mile stretch on the Police Officer Steven Jarvis Memorial Highway. Keep an eye on your fuel levels, with an estimated cost of $23 for the trip. A specific tip: be aware of potential traffic on I-270 as you depart Saint Peters, especially during peak hours.
Morning Departure
Leave by 9 AM and you'll arrive before lunch.
Evening Departure
Even a 4 PM departure gets you there before dark in summer.
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 80 miles or 1h 32m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 74 miles or 1h 26m 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 17m
Traffic, exits, and arrival timing usually matter more near Chaffee, MO than in the middle of the route.
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 147.9 miles and 2h 50m.
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 74 mi from Saint Peters, MO · 1h 26m into the drive
Mid-route town
Meal stop
74 mi into the route
Best for: Lunch, fuel, and a longer reset
This sits close to the middle of the route, so it works well for the longest stop of the day.
A short stop after about 80 miles helps settle the day before fatigue starts building.
The midpoint is around 74 miles from Saint Peters, MO, which is a good place for a longer meal and fuel stop.
Before the longest stretch
Fuel checkTop up before Police Officer Steven Jarvis Memorial Highway if your tank is already low. That segment runs about 101 miles.
The final approach into Chaffee, MO usually feels slower than the middle of the drive, so avoid planning your tightest schedule at the very end.
Try to arrive with enough fuel left to skip an immediate station stop unless you already know the area around Chaffee, MO.
After long uninterrupted mileage, take five minutes before the last urban segment to reset and refocus on exits, merges, and city traffic.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Regular Gas
$23.12 one way
$46.24 round trip
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.36 | $25.39 | $50.78 |
| premium | $4.89 | $28.46 | $56.92 |
| diesel | $5.61 | $32.65 | $65.31 |
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$23
Meals
$25–$50
Total
$48–$73
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 51.7 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $16 in charging · 0 stops · 67% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 44.4 | 0 | $15.53 | $7.10 |
| Efficient EV | 37 | 0 | $12.94 | $5.92 |
| EV Truck/SUV | 59.2 | 0 | $20.71 | $9.47 |
Gas CO2
52 kg
EV CO2
17 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.
Current conditions at both ends of the drive.
Origin
Late night in Saint Peters on Wednesday
Local time
5:20 AM
CDT
Current temp
54°F
Unavailable
Destination
Late night in Chaffee on Wednesday
Local time
5:20 AM
CDT
Current temp
62°F
Unavailable
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
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
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.
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