Origin
Boulder, CO
Morning in Boulder on Saturday
Local time
11:30 AM
MDT
Current temp
72°F
Unavailable
Live forecast
Trip from Boulder, CO to Johnstown, CO
Compiled and reviewed by the Trip.ovh planning team at COD Solutions Oy · Last reviewed Apr 18, 2026 · Editorial standards
Drive Time
50m
Distance
37.1 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
4 AM
0h 46m
★
6 AM
0h 51m
8 AM
0h 59m
10 AM
0h 54m
12 PM
0h 53m
3 PM
0h 54m
5 PM
0h 59m
8 PM
0h 48m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Boulder, CO
Wikimedia Commons
Johnstown, CO
Brady Wilson
Trip Overview
The drive from Boulder, CO to Johnstown, CO covers 37.1 miles and takes about 50m behind the wheel. This route is realistic as a one-day drive if you keep your stops efficient.
The route leans on Dwight D. Eisenhower Highway, Diagonal Highway, Ken Pratt Boulevard for much of the mileage, and the overall profile is mostly surface roads. The longest uninterrupted segment is about 11.5 miles on Dwight D. Eisenhower Highway. At current regular gas prices, budget about $5.59 one way before food or hotel costs.
Main Roads
| Road | Distance | Duration |
|---|---|---|
| Dwight D. Eisenhower Highway | 11.5 mi | 11m |
| Diagonal Highway | 8.6 mi | 11m |
| Ken Pratt Boulevard | 5.4 mi | 8m |
| West South 1st Street | 3.5 mi | 5m |
| Highway 119 | 3.1 mi | 3m |
| Foothills Parkway | 2.5 mi | 3m |
| Arapahoe Avenue | 1.6 mi | 3m |
| South 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 Boulder, CO and Johnstown, CO.
1
Start on this road
87 ft
·
6 sec
·
this road
2
Turn right onto 19th Street
143 ft
·
13 sec
·
19th Street
3
Turn left onto Arapahoe Avenue
1.6 mi
·
3 min
·
Arapahoe Avenue
Use the left / straight / right lanes.
4
Turn left onto CO 157
2.5 mi
·
3 min
·
Foothills Parkway
Use the left lane.
5
Continue on CO 119
8.6 mi
·
11 min
·
Diagonal Highway
Use the straight lane.
6
Continue on CO 119
5.4 mi
·
8 min
·
Ken Pratt Boulevard
Use the straight lane.
7
Continue on CO 119
3.1 mi
·
3 min
·
Highway 119
Use the left lane.
8
Turn left
0.3 mi
·
33 sec
Toward I 25 North
Use the left lane.
9
Merge onto I 25
11 mi
·
11 min
·
Dwight D. Eisenhower Highway
10
Take the exit
0.3 mi
·
41 sec
Exit 252
Toward CO 60 East: Johnstown, Milliken
11
Keep slight right at fork
276 ft
·
6 sec
12
Turn straight onto CO 60
3.5 mi
·
5 min
·
West South 1st Street
Use the straight lane.
13
Turn left onto South Estes Avenue
0.2 mi
·
34 sec
·
South Estes Avenue
14
Arrive at destination
North Estes Avenue
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Mid-route town
Meal stop
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
Fuel and coffee
A short stop after about 37 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 18.5 miles from Boulder, 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 95 decision points cluster between mile 0 and 33.1 — 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
|
19th Street
Turn right onto 19th Street
Navigation decision point
6
0 mi into trip
|
~0m in
|
Arapahoe Avenue
Turn left onto Arapahoe Avenue
Lane positioning matters here
Use the left / straight / right lanes.
4
1.6 mi into trip
|
~3m in
|
CO 157 / Foothills Parkway
Turn left onto CO 157 / Foothills Parkway
Lane positioning matters here
Use the left lane.
7
21.3 mi into trip
|
~31m in
Turn left toward I 25 North
Lane positioning matters here
Use the left lane.
Toward I 25 North
6
33.1 mi into trip
|
~43m in
Take the exit toward CO 60 East: Johnstown, Milliken
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Exit 252
Toward CO 60 East: Johnstown, Milliken
Fuel & Cost
Regular Gas
$5.59 one way
$11.18 round trip
$3.83/gal
25.4 MPG avg
13 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.05 | $5.92 | $11.84 |
| premium | $4.39 | $6.42 | $12.84 |
| diesel | $5.61 | $8.19 | $16.38 |
No toll roads detected on this route.
Drive Cost (one way)
Fuel
$6
Estimated CO2 emission: 13 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 | $3.90 | $1.78 |
| Efficient EV | 9.3 | 0 | $3.25 | $1.48 |
| EV Truck/SUV | 14.8 | 0 | $5.19 | $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.
Destination
Johnstown, CO
Morning in Johnstown on Saturday
Local time
11:30 AM
MDT
Current temp
80°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
8 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.
What kind of drive is this?
37.1 mi in 50m across surface roads — expect steady turns and local traffic rather than long highway runs.
Only 15% highway — the rest is turn-by-turn surface driving.
14 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?
7/10
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 early in the drive near 19th Street.
Driving Effort
7/10
Focused - busy navigation packed into a short drive
Balances navigation complexity with total wheel time.
This is a short but busy drive. With 9 decision points packed into just 37.1 miles, you will need to pay attention to lane changes and exits — but the whole thing is over in 50m.
Where does it get tricky?
The main spots that need attention: near the start (19th Street): Navigation decision point; near the start (Arapahoe Avenue): Lane positioning matters here; at 1.6 miles (CO 157 / Foothills Parkway): Lane positioning matters here.
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
On the drive from Boulder, CO to Johnstown, CO, road signs begin pointing toward Milliken along the way.
Milliken
33.1 mi in
|
~43m
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 50m. Total distance: 37.1 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.
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.
It helps. This route has a higher-than-average number of complex decision points, which get harder in the dark. If the last hour of the trip is on surface roads or mountain grades, aim to arrive at Johnstown, CO before sunset when you can. Check the Trip Plan for departure windows that land you in daylight.
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: near the start (19th Street): Navigation decision point; near the start (Arapahoe Avenue): Lane positioning matters here; at 1.6 miles (CO 157 / Foothills Parkway): Lane positioning matters here.
Yes. A round trip is manageable in a single day if you plan a break at Johnstown, CO before heading back.
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, and EIA for fuel prices. See our methodology for refresh cadence and limitations.
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