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Trip from Arnold, MO to St. Louis, MO

Compiled and reviewed by the Trip.ovh planning team at COD Solutions Oy · Last reviewed Apr 18, 2026 · Editorial standards

Drive Time

25m

Distance

18.3 mi

30 km

Drive Score

6/10

Good drive

Same Day?

Yes, doable

Fuel Cost

$3

one way

EV Charging

Unknown

Best Time to Leave

Save up to 6 min
4 AM
0h 24m ★
6 AM
0h 26m
8 AM
0h 30m
10 AM
0h 28m
12 PM
0h 27m
3 PM
0h 28m
5 PM
0h 30m
8 PM
0h 25m

Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.

city in Jefferson County, Missouri, United States

Arnold, MO

Wikimedia Commons

Trip Overview

Arnold, MO to St. Louis, MO is 18.3 miles and takes about 25m via Rosa Parks Highway, with a fuel budget near $3 and enough daylight to finish in a day. This short Midwest journey keeps you within Missouri, offering a straightforward connection between two points. Expect a local driving experience rather than a high-speed interstate cruise. Given the minimal distance and time, this route is ideal for a same-day trip, allowing plenty of flexibility for when you choose to depart or if you decide to make unscheduled stops along the way.

Who Is This Route For?

Weekend Trip

Doable as a same-day drive at 25m. Total distance: 18.3 miles.

Family Friendly

Moderate complexity with 0 natural rest stops along the way.

Solo Traveler

25m drive, comfortable solo distance.

EV Driver

0 DC fast chargers along the route. Coverage: unknown.

First-Time Driver

Mostly highway driving (1%). Straightforward navigation.

Scenic Drive

Turn-heavy local drive route profile with national parks nearby.

Drive Character

This route is characterized as a 'turn-heavy local drive,' with a 100% highway share, meaning you'll be navigating city streets and connecting roads for the entire trip. The longest uninterrupted stretch you'll encounter is 12.5 miles on Rosa Parks Highway. You'll mainly be on Rosa Parks Highway, Officer Thomas G. Smith, Jr. Memorial Highway, and South Tucker Boulevard. Be prepared for frequent changes in direction and speed as you transition between these named local routes.

This route has more turning and local-road decision points than a simple highway run.
There are about 11 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
Rosa Parks Highway is the longest continuous segment at about 12.5 miles.

How Hard Is This Drive?

Expect a hands-on drive with frequent turns and local roads rather than long highway stretches. There are only a few real navigation decisions along the way. The trickiest moment comes early in the drive near US 61; US 67 / Jeffco Boulevard.

Driving Effort 4/10

Easy - simple navigation with a manageable amount of wheel time

Balances navigation complexity with total wheel time.

This is a straightforward 25m drive. You will face about 6 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 (US 61; US 67 / Jeffco Boulevard): Lane positioning matters here; at 0.9 miles (MO 141): Lane positioning matters here; at 1.1 miles: Navigation decision point.

Critical Maneuvers

5 of 6 key points

These are the spots where you need to pay the most attention. Preview them before you drive.

3
0 mi into trip | ~0m in | US 61; US 67 / Jeffco Boulevard

Depart onto US 61; US 67 / Jeffco Boulevard

Lane positioning matters here

Use the left lane.
6
0.9 mi into trip | ~1m in | MO 141

Turn left onto MO 141

Lane positioning matters here

Use the left lane.
4
1.1 mi into trip | ~2m in

Take the ramp toward I 55 North

Navigation decision point

Toward I 55 North
7
16.6 mi into trip | ~21m 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
4
18.3 mi into trip | ~25m in | Market Street

Turn right onto Market Street

Navigation decision point

Main Roads

Road Distance Duration
Rosa Parks Highway 12.5 mi 15m
Officer Thomas G. Smith, Jr. Memorial Highway 1.9 mi 2m
South Tucker Boulevard 1.3 mi 3m
Jeffco Boulevard 0.9 mi 1m
Police Officer Steven Jarvis Memorial Highway 0.9 mi 1m
MO 141 0.2 mi <1m
Gravois Avenue 0.2 mi <1m
Market Street <0.1 mi <1m
Longest stretch: Rosa Parks Highway — 12.5 mi, about 15m

Turn-by-Turn Driving Directions

Step-by-step road directions between Arnold, MO and St. Louis, MO.

1

Start on US 61; US 67

0.9 mi · 1 min · Jeffco Boulevard
Use the left lane.
2

Turn left onto MO 141

0.2 mi · 27 sec · MO 141
Use the left lane.
3

Take the ramp

0.2 mi · 30 sec
Toward I 55 North
4

Merge onto I 55

0.9 mi · 1 min · Police Officer Steven Jarvis Memorial Highway
5

Continue on I 55

1.9 mi · 2 min · Officer Thomas G. Smith, Jr. Memorial Highway
6

Continue on I 55

12 mi · 15 min · Rosa Parks Highway
Use the straight / slight right lanes.
7

Take the exit

0.2 mi · 23 sec
Exit 207A Toward MO 30 East: Gravois Avenue Use the slight right lane.
8

Turn slight right onto Gravois Avenue

0.2 mi · 27 sec · Gravois Avenue
9

Continue on South Tucker Boulevard

1.3 mi · 3 min · South Tucker Boulevard
10

Turn right onto Market Street

86 ft · 2 sec · Market Street
11

Arrive at destination

Market Street

Fuel & Cost

Regular Gas

$2.86 one way

$5.72 round trip

$3.97/gal 25.4 MPG avg 6 kg CO2
Fuel Type $/gal One Way Round Trip
midgrade $4.36 $3.14 $6.28
premium $4.89 $3.52 $7.04
diesel $5.61 $4.04 $8.08

No toll roads detected on this route.

Drive Cost (one way)

Fuel

$3

Estimated CO2 emission: 6.4 kg one way. Prices: EIA weekly data, 2026-04-13.

Driving Electric?

About $2 in charging · 0 stops · 67% less CO2

Vehicle Type kWh Stops DC Fast Home Charge
Average EV 5.5 0 $1.92 $0.88
Efficient EV 4.6 0 $1.60 $0.73
EV Truck/SUV 7.3 0 $2.56 $1.17

Gas CO2

6 kg

EV CO2

2 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

Arnold, MO

Late night in Arnold on Saturday

Local time

3:50 AM

CDT

Current temp

86°F

Slight Chance Showers And Thunderstorms

S 13 mph 20% chance Live forecast

Flood Watch

Flood Watch issued April 17 at 11:35AM CDT by NWS Springfield MO

Flood Watch

Flood Watch issued April 17 at 11:29AM CDT until April 22 at 1:00AM CDT by NWS Springfield MO

Destination

St. Louis, MO

Late night in St. Louis on Saturday

Local time

3:50 AM

CDT

Current temp

74°F

Unavailable

Live forecast

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

12 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

25m 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.

Frequently Asked Questions

The drive from Arnold, MO to St. Louis, MO covers 18.3 miles and takes about 25m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.

The main roads are Rosa Parks Highway, Officer Thomas G. Smith, Jr. Memorial Highway, South Tucker Boulevard. Expect a mix of highway and local road driving.

This is a comfortable same-day trip.

The midpoint is about 9.2 miles from Arnold, MO. Look for rest areas, gas stations, or food options near the halfway mark.

At current regular gas prices, expect to spend about $2.86 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.

Leave by 9 AM and you'll arrive before lunch. Even a 4 PM departure gets you there before dark in summer.

This is a straightforward 25m drive. You will face about 6 decision points, but nothing that requires special attention if you follow navigation.

The main spots that need attention: near the start (US 61; US 67 / Jeffco Boulevard): Lane positioning matters here; at 0.9 miles (MO 141): Lane positioning matters here; at 1.1 miles: Navigation decision point.

The route from Arnold, MO to St. Louis, MO does not surface many named destination signs beyond the main corridor.

Yes. Nearby national parks include Gateway Arch National Park.

How this page is built

Compiled by the Trip.ovh planning team at COD Solutions Oy from open government datasets — OSRM over OpenStreetMap for geometry, EIA for fuel prices, and NPS for national parks. See our methodology for refresh cadence and limitations.

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