Trip from Johnstown, CO to Boulder, CO

Drive Time

50m

Distance

37 mi

60 km

Drive Score

6/10

Good drive

Same Day?

Yes, doable

Fuel Cost

$6

one way

EV Charging

Loading...

station data

Best Time to Leave

Save up to 13 min
4 AM
0h 46m ★
6 AM
0h 50m
8 AM
0h 59m
10 AM
0h 53m
12 PM
0h 52m
3 PM
0h 54m
5 PM
0h 58m
8 PM
0h 48m

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

Downtown Boulder, CO, CO

Boulder, CO

Dmitriy Piskarev

Trip Overview

If you are looking to travel between Johnstown and Boulder, this 37-mile trip is a straightforward journey that typically takes about 50 minutes. Because of the short distance, it is perfectly suited for a single-day excursion, requiring no overnight stays. You will navigate via the Dwight D. Eisenhower Highway, East Ken Pratt Boulevard, and the Diagonal Highway to complete the transit. Budget approximately $6 for fuel to cover the distance between these two Mountain West locations. Whether you are commuting or heading out for a quick change of scenery, this route offers a practical and efficient connection.

Trip Pace

Same-day drive is realistic

A same-day return is realistic if you keep stops short.

Break Rhythm

0 planned breaks

A short stop every 2 to 3 hours is enough for this drive.

Midpoint

18.5 miles from Johnstown, CO

A natural place for your longest stop of the day , about 22m into the drive .

Drive Character

Expect a turn-heavy local driving experience as you navigate your way toward Boulder. Only about 13% of this 37-mile route consists of highway driving, meaning you will spend the majority of your time on local roads. The longest uninterrupted segment you will encounter is an 11.5-mile stretch along the Dwight D. Eisenhower Highway. The road’s personality shifts from highway speeds to more technical, localized maneuvering as you transition between the two cities. You should be prepared to stay alert and manage frequent turns throughout this 50-minute trek.

This route has more turning and local-road decision points than a simple highway run.
There are about 13 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
Dwight D. Eisenhower Highway is the longest continuous segment at about 11.5 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 around 0.2 miles in near CO 60 / West South 1st Street.

Route Complexity 4/10

Easy - simple navigation with a manageable amount of wheel time

This is a straightforward 50m 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 0.2 miles (CO 60 / West South 1st Street): Lane positioning matters here; at 15.5 miles: Exit ramp - move to the correct lane early. Lane positioning matters here; at 15.8 miles (CO 119 / Highway 119): Lane positioning matters here.

Critical Maneuvers

5 of 7 key points

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

6
0.2 mi into trip | ~0m in | CO 60 / West South 1st Street

Turn right onto CO 60 / West South 1st Street

Lane positioning matters here

Use the straight / right lanes.
7
15.5 mi into trip | ~18m in

Take the exit toward CO 119 West

Exit ramp - move to the correct lane early. Lane positioning matters here

Use the slight right lane. Exit 240 Toward CO 119 West
4
15.8 mi into trip | ~19m in | CO 119 / Highway 119

Turn right onto CO 119 / Highway 119

Lane positioning matters here

Use the none lane.
4
35.4 mi into trip | ~46m in | CO 7 / Arapahoe Avenue

Turn right onto CO 7 / Arapahoe Avenue

Lane positioning matters here

Use the straight lane.
6
37 mi into trip | ~49m in | 19th Street

Turn right onto 19th Street

Lane positioning matters here

Use the straight / right lanes.

Main Roads

Road Distance Duration
Dwight D. Eisenhower Highway 11.5 mi 11m
Diagonal Highway 9.3 mi 12m
East Ken Pratt Boulevard 5.4 mi 8m
West South 1st Street 3.6 mi 6m
Highway 119 3 mi 3m
Foothills Parkway 1.9 mi 2m
Arapahoe Avenue 1.6 mi 3m
North Estes Avenue 0.2 mi <1m
Longest stretch: Dwight D. Eisenhower Highway — 11.5 mi, about 11m

Turn-by-Turn Driving Directions

Step-by-step road directions between Johnstown, CO and Boulder, CO.

1

Start on North Estes Avenue

0.2 mi · 37 sec · North Estes Avenue
2

Turn right onto CO 60

3.6 mi · 6 min · West South 1st Street
Use the straight / right lanes.
3

Take the ramp

0.3 mi · 36 sec
4

Merge onto I 25

11 mi · 11 min · Dwight D. Eisenhower Highway
5

Take the exit

0.3 mi · 29 sec
Exit 240 Toward CO 119 West Use the slight right lane.
6

Turn right onto CO 119

3.0 mi · 3 min · Highway 119
Use the none lane.
7

Continue on CO 119

5.4 mi · 8 min · East Ken Pratt Boulevard
Use the none lane.
8

Continue on CO 119

9.3 mi · 12 min · Diagonal Highway
Use the straight lane.
9

Continue on CO 157

1.9 mi · 2 min · Foothills Parkway
Use the none lane.
10

Turn right onto CO 7

1.6 mi · 3 min · Arapahoe Avenue
Use the straight lane.
11

Turn right onto 19th Street

143 ft · 11 sec · 19th Street
Use the straight / right lanes.
12

Turn left

87 ft · 4 sec
13

Arrive at destination

Trip Plan

Since this is a short, 50-minute drive, you have plenty of flexibility in your scheduling. You will not need to plan for any formal stops, as the entire route can be managed in one go. Keep your $6 fuel budget in mind, but otherwise, the simplicity of the trip allows you to focus on the road ahead rather than complex logistics. Given the turn-heavy nature of the route, stay focused on navigation when transitioning from the Dwight D. Eisenhower Highway onto the local segments. Taking this trip in a single day is the most efficient way to handle the 37-mile distance.

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.
You may only need one short stretch break if traffic stays light.
The halfway point lands around 18.5 miles from Johnstown, CO, or about 22m into the drive.
The longest continuous stretch on this route runs about 11.5 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 37 miles or 50m in

Use this first pause for coffee, a restroom break, and a quick traffic check ahead.

Halfway reset

Around 18.5 miles or 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 40m

Traffic, exits, and arrival timing usually matter more near Boulder, CO than in the middle of the route.

Before You Leave

+

Open the route before leaving Johnstown, CO 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 Johnstown, CO

This is one driving day of about 37 miles and 50m.

Your first comfortable stop window is around 80 miles from Johnstown, CO.
This route can stay practical as a one-day drive if traffic stays reasonable.
You may only need one short stretch stop if conditions stay smooth.
The longest stretch is on Dwight D. Eisenhower Highway for about 11.5 miles.

Where to Stop

Rest stops, refuel points, and overnight suggestions along this route.

Halfway Point

Midpoint

About 18.5 mi from Johnstown, CO · 22m into the drive

Mid-route town

Meal stop

Firestone, CO

19 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.

Pacing Suggestions

Broomfield, CO

Fuel and coffee

A short stop after about 37 miles helps settle the day before fatigue starts building.

Firestone, CO

Meal break

The midpoint is around 18.5 miles from Johnstown, CO, which is a good place for a longer meal and fuel stop.

Arriving in Boulder, CO

The final approach into Boulder, CO 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 Boulder, CO.

These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.

Fuel & Cost

Regular Gas

$5.61 one way

$11.21 round trip

$3.85/gal 25.4 MPG avg 13 kg CO2
Fuel Type $/gal One Way Round Trip
midgrade $4.08 $5.95 $11.90
premium $4.43 $6.46 $12.92
diesel $5.64 $8.22 $16.44

No toll roads detected on this route.

Estimated Trip Cost (one way, 1 person)

Fuel

$6

Meals

$25–$50

Total

$31–$56

Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.

Estimated CO2 emission: 12.9 kg one way. Prices: EIA weekly data, 2026-04-06.

Driving Electric?

About $4 in charging · 0 stops · 69% less CO2

Vehicle Type kWh Stops DC Fast Home Charge
Average EV 11.1 0 $3.89 $1.78
Efficient EV 9.3 0 $3.24 $1.48
EV Truck/SUV 14.8 0 $5.18 $2.37

Gas CO2

13 kg

EV CO2

4 kg (69% 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 data refreshed 3 days ago

Origin

Johnstown, CO

Evening in Johnstown on Sunday

Local time

5:15 PM

MDT

Current temp

37°F

Unavailable

Live forecast

Destination

Boulder, CO

Evening in Boulder on Sunday

Local time

5:15 PM

MDT

Current temp

40°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

3 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

50m 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.

Frequently Asked Questions

The drive from Johnstown, CO to Boulder, CO covers 37 miles and takes about 50m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are Dwight D. Eisenhower Highway, Diagonal Highway, East Ken Pratt Boulevard. Expect a mix of highway and local road driving.
This is a comfortable same-day trip.
The midpoint is about 18.5 miles from Johnstown, CO. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $5.61 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 50m drive. You will face about 7 decision points, but nothing that requires special attention if you follow navigation.
The main spots that need attention: at 0.2 miles (CO 60 / West South 1st Street): Lane positioning matters here; at 15.5 miles: Exit ramp - move to the correct lane early. Lane positioning matters here; at 15.8 miles (CO 119 / Highway 119): Lane positioning matters here.
The route from Johnstown, CO to Boulder, CO does not surface many named destination signs beyond the main corridor.

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