Skip to main content

Trip from Johnstown, CO to Boulder, CO

Pin this trip

Compiled and reviewed by the US Trip Planner planning team at COD Solutions Oy · Last reviewed Apr 21, 2026 · Editorial standards

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

Unknown

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 Johnstown, CO, CO

Johnstown, CO

Brady Wilson

city in and county seat of Boulder County, Colorado, United States

Boulder, CO

Wikimedia Commons

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.

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
7

Continue on CO 119

5.4 mi · 8 min · East Ken Pratt Boulevard
Use the straight / right lanes.
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 straight 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

Where to Stop

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

city in Boulder County, Colorado, United States

Mid-route town

Meal stop

Longmont, 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

Louisville, CO

Fuel and coffee

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

Longmont, 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.

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

Heads-up: tricky spots

5 of 6

5 decision points cluster between mile 0.2 and 37 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.

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
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.
4
37 mi into trip | ~50m in

Turn left

Navigation decision point

Fuel & Cost

Regular Gas

$5.57 one way

$11.15 round trip

$3.83/gal 25.4 MPG avg 13 kg CO2
Fuel Type $/gal One Way Round Trip
midgrade $4.05 $5.90 $11.81
premium $4.39 $6.40 $12.80
diesel $5.61 $8.17 $16.34

No toll roads detected on this route.

Drive Cost (one way)

Fuel

$6

Estimated CO2 emission: 12.9 kg one way. Prices: EIA weekly data, 2026-04-13.

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 as of Apr 20, 2026

Origin

Johnstown, CO

Late night in Johnstown on Tuesday

Local time

3:46 AM

MDT

Current temp

58°F

Unavailable

Live forecast

Destination

Boulder, CO

Late night in Boulder on Tuesday

Local time

3:46 AM

MDT

Current temp

53°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

5 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

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.

What kind of drive is this?

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.

Only 13% highway — the rest is turn-by-turn surface driving.
13 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 11.5 mi on Dwight D. Eisenhower Highway.

How Hard Is This Drive?

4/10

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.

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 50m 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: 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 35.4 miles (CO 7 / Arapahoe Avenue): Lane positioning matters here.

Who Is This Route For?

Weekend Trip

Doable as a same-day drive at 50m. Total distance: 37 miles.

Family Friendly

Moderate complexity with 0 natural rest stops along the way.

Solo Traveler

50m drive, comfortable solo distance.

EV Driver

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

First-Time Driver

Mostly highway driving (13%). Straightforward navigation.

Scenic Drive

Mostly surface roads route profile.

Frequently Asked Questions

The longest stretch is about 11.5 miles on Dwight D. Eisenhower Highway. The full list of main roads is in the Roads section above.

Yes. At under 2 hours behind the wheel, this works well for families — plan one quick stop if you have younger kids.

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 35.4 miles (CO 7 / Arapahoe Avenue): Lane positioning matters here.

Yes. A round trip is manageable in a single day if you plan a break at Boulder, CO before heading back.

How this page is built

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

Was this helpful?

Thanks for your feedback!

Your tip has been submitted. Thanks!

/500

Explore More

Explore more options from Johnstown, CO or browse trips ending in Boulder, CO.

Looking for more statewide routes? Browse CO road trips.