Piedmont, MO to St. Louis, MO is 131.7 miles and takes about 2h 40m via US 67 and I 55, with a fuel budget near $21 and enough daylight to finish in a day. This drive stays within the Midwest region, originating in Missouri and ending in Missouri, making it a straightforward trip. You'll experience a highway-focused journey that’s ideal for a single-day excursion, with most of your travel on well-maintained roads. Consider this route if you're looking for an efficient way to get from point A to point B without significant detours.
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
65.9 miles from Piedmont, MO
A natural place for your longest stop of the day
, about 1h 22m into the drive
.
Main Roads
Road
Distance
Duration
US 67
81.3 mi
1h 33m
I 55
20.5 mi
22m
MO 34
13.7 mi
20m
Rosa Parks Highway
12.5 mi
15m
South Tucker Boulevard
1.3 mi
3m
North Main Street
0.9 mi
2m
Gravois Avenue
0.2 mi
<1m
Market Street
<0.1 mi
<1m
Longest stretch:
US 67
— 81.3 mi, about 1h 33m
Turn-by-Turn Driving Directions
Step-by-step road directions between Piedmont, MO and St. Louis, MO.
1
Start on MO B
66 ft·4 sec·East Fir Street
2
Turn right onto MO 34; MO 49
0.9 mi·2 min·North Main Street
3
Turn right onto MO 34
14 mi·20 min·MO 34
4
Turn left
0.5 mi·1 min
5
Continue on this road
0.1 mi·15 sec·this road
6
Merge onto US 67
81 mi·1 hr 32 min·US 67
7
Keep slight right at fork onto US 67
0.3 mi·27 sec·US 67
8
Take the exit
0.3 mi·49 sec
Toward I 55 North: Saint Louis
9
Merge onto I 55
21 mi·22 min·I 55
10
Continue on I 55
12 mi·15 min·Rosa Parks Highway
Use the straight / slight right lanes.
11
Take the exit
0.2 mi·23 sec
Exit 207AToward MO 30 East: Gravois AvenueUse the slight right lane.
12
Turn slight right onto Gravois Avenue
0.2 mi·27 sec·Gravois Avenue
13
Continue on South Tucker Boulevard
1.3 mi·3 min·South Tucker Boulevard
14
Turn right onto Market Street
86 ft·2 sec·Market Street
15
Arrive at destination
Market Street
Trip Plan
Given the relatively short duration of 2 hours and 40 minutes, this trip offers flexibility. You can depart anytime, but leaving in the morning allows for a full day upon arrival in St. Louis. With only one recommended stop and a fuel cost estimated at $21, planning for gas before you leave Piedmont is advisable. The longest stretch without a break is 81.3 miles on US 67, so consider taking a brief pause around the halfway point if needed to stretch your legs before merging onto I 55.
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.
You can normally do this drive in one day.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 65.9 miles from Piedmont, MO, or about 1h 22m into the drive.
The longest continuous stretch on this route runs about 81.3 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 29 miles or 40m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 65.9 miles or 1h 22m 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 10m
Traffic, exits, and arrival timing usually matter more near St. Louis, MO than in the middle of the route.
Before You Leave
+
Open the route before leaving Piedmont, 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 Piedmont, MO
This is one driving day of about 131.7 miles and 2h 40m.
Your first comfortable stop window is around 29 miles from Piedmont, 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 US 67 for about 81.3 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 9
5 decision points cluster between mile 0 and 130 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
4
0 mi into trip|~0m in|MO 34; MO 49 / North Main Street
Turn right onto MO 34; MO 49 / North Main Street
Navigation decision point
4
14.7 mi into trip|~22m in
Turn left
Navigation decision point
4
96.3 mi into trip|~1h 57m in|US 67
Keep slight right at fork onto US 67
Highway fork - watch signs carefully
4
96.6 mi into trip|~1h 57m in
Take the exit toward I 55 North: Saint Louis
Exit ramp - move to the correct lane early
Toward I 55 North: Saint Louis
7
130 mi into trip|~2h 36m in
Take the exit toward MO 30 East: Gravois Avenue
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the slight right lane.
Exit 207A
Toward MO 30 East: Gravois Avenue
Fuel & Cost
Regular Gas
$20.59 one way
$41.18 round trip
$3.97/gal25.4 MPG avg46 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.36
$22.61
$45.21
premium
$4.89
$25.34
$50.69
diesel
$5.61
$29.08
$58.16
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$21
Meals
$25–$50
Total
$46–$71
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 46.1 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $14 in charging
· 0 stops
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
39.5
0
$13.83
$6.32
Efficient EV
32.9
0
$11.52
$5.27
EV Truck/SUV
52.7
0
$18.44
$8.43
Gas CO2
46 kg
EV CO2
15 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 17, 2026
Origin
Piedmont, MO
Night
in Piedmont on Saturday
Local time
9:47 PM
CDT
Current temp
52°F
Unavailable
Live forecast
Destination
St. Louis, MO
Night
in St. Louis on Saturday
Local time
9:47 PM
CDT
Current temp
87°F
Mostly Sunny then Chance Showers And Thunderstorms
S 8 to 15 mph32% chanceLive forecast
Flood Warning
Flood Warning issued April 17 at 9:07AM CDT until April 23 at 1:23AM CDT by NWS Kansas City/Pleasant Hill MO
Flood Warning
Flood Warning issued April 17 at 9:07AM CDT until April 20 at 11:26AM CDT by NWS Kansas City/Pleasant Hill MO
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
35 degrees warmer at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
2h 40m on the road
The weather snapshot is not static. If you are leaving later, give both cities one more quick forecast check before departure.
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...
Established by 1750, Ste. Geneviève was the first permanent European settlement in Missouri. Early French Canadian settlers were drawn here by the rich agricultural land known as Le Grand Champ (the B...
24 mi from route
~60 min detour
Free
near mile 81.8
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
This is primarily a highway-focused drive, with 88% of the 131.7 miles covered on major roads like US 67 and I 55. You'll encounter one significant stretch of 81.3 miles on US 67, which means extended periods of consistent driving. The route balances interstate speeds with stretches on US 67, offering a generally smooth and direct experience. Expect a predictable driving rhythm for most of the 2 hour and 40 minute trip.
88% highway — fuel and pacing are the main things to plan.
15 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 81.3 mi on US 67.
How Hard Is This Drive?
4/10
This is a straightforward highway drive that stays mostly on US 67 and I 55. There are only a few real navigation decisions along the way. The trickiest moment comes early in the drive near MO 34; MO 49 / North Main Street.
Driving Effort4/10
Easy - simple navigation with a manageable amount of wheel time
Balances navigation complexity with total wheel time.
This is a straightforward 2h 40m drive. You will face about 9 decision points, but nothing that requires special attention if you follow navigation.
Where does it get tricky?
The main spots that need attention: near the start (MO 34; MO 49 / North Main Street): Navigation decision point; at 14.7 miles: Navigation decision point; at 96.3 miles (US 67): Highway fork - watch signs carefully.
The Gateway City of St. Louis is the epitome of the modern Midwestern metropolis. Missouri's second-largest city is vibrant but laid-back, populous but navigable, historic but still relevant. The city's planners have created an aesthetically beautiful city, with plenty of green space amidst buildings both old and new, framed by the majestic Mississippi and Missouri rivers. And capping it all is the world's tallest man-made monument, the beautiful and iconic Gateway Arch.
St. Louis is a city of culture and surprisingly inexpensive. Among American cities, only Washington, D.C. has more free attractions for tourists and residents alike. Hotels, restaurants, and even parking garages avoid the premium pricing common in other big cities. Although often overlooked, St. Louis can be an affordable, educational, and fun family getaway.
The longest stretch is about 81.3 miles on US 67. The full list of main roads is in the Roads section above.
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 (MO 34; MO 49 / North Main Street): Navigation decision point; at 14.7 miles: Navigation decision point; at 96.3 miles (US 67): Highway fork - watch signs carefully.
Yes — Gateway Arch National Park and Ste. Geneviève National Historical Park. See the National Parks section for detour distances and tips on detours.
Yes. A round trip is manageable in a single day if you plan a break at St. Louis, MO before heading back.
