Origin
Penrose, CO
Night in Penrose on Thursday
Local time
11:34 PM
MDT
Current temp
46°F
Unavailable
Live forecast
Trip from Penrose, CO to Boulder, CO
Compiled by the Trip.ovh editorial team · Last recalculated Apr 17, 2026 · Methodology
Drive Time
2h 38m
Distance
130.9 mi
211 km
Drive Score
9/10
Great drive
Same Day?
Yes, doable
Fuel Cost
$20
one way
EV Charging
Unknown
Best Time to Leave
4 AM
2h 28m
★
6 AM
2h 38m
8 AM
2h 59m
10 AM
2h 46m
12 PM
2h 44m
3 PM
2h 47m
5 PM
2h 58m
8 PM
2h 32m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Penrose, CO
Steve A Johnson
Boulder, CO
Wikimedia Commons
Trip Overview
The drive from Penrose, CO to Boulder, CO covers 130.9 miles and takes about 2h 38m behind the wheel. This route is realistic as a one-day drive if you keep your stops efficient.
The route leans on Ronald Reagan Highway, CO 115, Denver–Boulder Turnpike for much of the mileage, and the overall profile is mixed drive. The longest uninterrupted segment is about 68.6 miles on Ronald Reagan Highway. At current regular gas prices, budget about $19.72 one way before food or hotel costs.
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
65.4 miles from Penrose, CO
A natural place for your longest stop of the day , about 1h 22m into the drive .
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 2h 38m. Total distance: 130.9 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
2h 38m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (45%). Some complex stretches to watch for.
Drive Character
The drive from Penrose, CO to Boulder, CO covers 130.9 miles and takes about 2h 38m, using a mix of highways and local roads.
Expect a mix of faster highway mileage and slower local approaches near the beginning or end.
There are about 22 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
Ronald Reagan Highway is the longest continuous segment at about 68.6 miles.
How Hard Is This Drive?
This route mixes highway mileage with some local-road sections near the start or finish. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 0.3 miles in near CO 115.
Driving Effort
9/10
High effort - long or complex enough to need steady focus all day
Balances navigation complexity with total wheel time.
This is a demanding drive. With 18 significant decision points across 130.9 miles, you will need to stay alert - especially through interchange areas and urban stretches. Consider splitting it into segments if you are not comfortable with fast highway navigation.
Where does it get tricky?
The main spots that need attention: at 0.3 miles (CO 115): Sharp turn - reduce speed on approach. Lane positioning matters here; at 32.3 miles: Lane positioning matters here. Multiple destination signs - pick the right one; at 32.5 miles: Lane positioning matters here. Multiple destination signs - pick the right one.
Critical Maneuvers
5 of 18 key pointsThese are the spots where you need to pay the most attention. Preview them before you drive.
7
0.3 mi into trip
|
~1m in
|
CO 115
Turn sharp right onto CO 115
Sharp turn - reduce speed on approach. Lane positioning matters here
Use the straight lane.
7
32.3 mi into trip
|
~44m in
Turn left toward I 25 North, US 24 West: Denver
Lane positioning matters here. Multiple destination signs - pick the right one
Use the left lane.
Toward I 25 North, US 24 West: Denver
7
32.5 mi into trip
|
~44m in
Take the ramp toward I 25 North, US 24 West: Denver
Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / right lanes.
Toward I 25 North, US 24 West: Denver
8
109.1 mi into trip
|
~2h 10m in
Take the exit toward US 36 West: Westminster, Boulder
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight left lane.
Exit 217A
Toward US 36 West: Westminster, Boulder
6
115.7 mi into trip
|
~2h 18m in
|
US 36 / Denver–Boulder Turnpike
Keep slight right at fork onto US 36 / Denver–Boulder Turnpike
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
Main Roads
| Road | Distance | Duration |
|---|---|---|
| Ronald Reagan Highway | 68.6 mi | 1h 16m |
| CO 115 | 32 mi | 43m |
| Denver–Boulder Turnpike | 19.8 mi | 23m |
| Monument Valley Freeway | 7.7 mi | 8m |
| 28th Street | 0.8 mi | 1m |
| Arapahoe Avenue | 0.6 mi | 1m |
| Grant Street | 0.2 mi | <1m |
| 4th Avenue | 0.1 mi | <1m |
Longest stretch:
Ronald Reagan Highway
— 68.6 mi, about 1h 16m
Turn-by-Turn Driving Directions
Step-by-step road directions between Penrose, CO and Boulder, CO.
1
Start on Grant Street
0.2 mi
·
46 sec
·
Grant Street
2
Turn left onto 4th Avenue
0.1 mi
·
39 sec
·
4th Avenue
3
Turn sharp right onto CO 115
32 mi
·
43 min
·
CO 115
Use the straight lane.
4
Turn left
0.1 mi
·
14 sec
Toward I 25 North, US 24 West: Denver
Use the left lane.
5
Take the ramp
0.3 mi
·
35 sec
Toward I 25 North, US 24 West: Denver
Use the straight / right lanes.
6
Merge onto I 25; US 24
7.7 mi
·
8 min
·
Monument Valley Freeway
Use the straight / slight right lanes.
7
Continue on I 25
69 mi
·
1 hr 16 min
·
Ronald Reagan Highway
Use the straight / slight right lanes.
8
Take the exit
0.6 mi
·
51 sec
Exit 217A
Toward US 36 West: Westminster, Boulder
Use the slight left lane.
9
Merge onto US 36
2.1 mi
·
2 min
·
Denver–Boulder Turnpike
10
Keep slight right at fork onto US 36
1.7 mi
·
1 min
·
Denver–Boulder Turnpike
11
Keep slight right at fork onto US 36
2.3 mi
·
2 min
·
Denver–Boulder Turnpike
12
Keep slight right at fork onto US 36
1.9 mi
·
2 min
·
Denver–Boulder Turnpike
Use the straight / slight right lanes.
13
Keep slight right at fork onto US 36
2.1 mi
·
2 min
·
Denver–Boulder Turnpike
Use the straight / slight right lanes.
14
Keep slight right at fork onto US 36
2.9 mi
·
3 min
·
Denver–Boulder Turnpike
Use the straight / slight right lanes.
15
Keep slight right at fork onto US 36
2.4 mi
·
2 min
·
Denver–Boulder Turnpike
Use the straight / slight right lanes.
16
Keep slight right at fork onto US 36
2.2 mi
·
2 min
·
Denver–Boulder Turnpike
17
Keep slight left at fork onto US 36
2.3 mi
·
2 min
·
Denver–Boulder Turnpike
Use the straight lane.
18
Continue on US 36
0.8 mi
·
1 min
·
28th Street
Use the left / straight lanes.
19
Turn left onto Arapahoe Avenue
0.6 mi
·
1 min
·
Arapahoe Avenue
Use the left lane.
20
Turn right onto 19th Street
143 ft
·
11 sec
·
19th Street
Use the straight / right lanes.
21
Turn left
87 ft
·
4 sec
22
Arrive at destination
Trip Plan
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 65.4 miles from Penrose, CO, or about 1h 22m into the drive.
The longest continuous stretch on this route runs about 68.6 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 65.4 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 8m
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 Penrose, 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 Penrose, CO
This is one driving day of about 130.9 miles and 2h 38m.
Your first comfortable stop window is around 29 miles from Penrose, CO.
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 Ronald Reagan Highway for about 68.6 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 65.4 mi from Penrose, CO · 1h 22m into the drive
Mid-route town
Meal stop
65 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 29 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 65.4 miles from Penrose, CO, which is a good place for a longer meal and fuel stop.
Before the longest stretch
Fuel checkTop up before Ronald Reagan Highway if your tank is already low. That segment runs about 68.6 miles.
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
$19.72 one way
$39.45 round trip
$3.83/gal
25.4 MPG avg
46 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.05 | $20.88 | $41.76 |
| premium | $4.39 | $22.64 | $45.29 |
| diesel | $5.61 | $28.90 | $57.80 |
Estimated Tolls: $1.38
Denver–Boulder Turnpike
(19.8 mi)
$1.38
Toll estimates based on average 2024-2025 rates. EZ-Pass/SunPass discounts may lower the actual cost.
Estimated Trip Cost (one way, 1 person)
Fuel
$20
Tolls
$1
Meals
$25–$50
Total
$46–$71
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 45.8 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 | 39.3 | 0 | $13.74 | $6.28 |
| Efficient EV | 32.7 | 0 | $11.45 | $5.24 |
| EV Truck/SUV | 52.4 | 0 | $18.33 | $8.38 |
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.
Destination
Boulder, CO
Night in Boulder on Thursday
Local time
11:34 PM
MDT
Current temp
72°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
26 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 38m 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 Penrose, CO to Boulder, CO covers 130.9 miles and takes about 2h 38m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are Ronald Reagan Highway, CO 115, Denver–Boulder Turnpike. Expect a mix of highway and local road driving.
This is a comfortable same-day trip.
The midpoint is about 65.4 miles from Penrose, CO. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $19.72 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.
Plan about 1 meaningful break for fuel, food, or rest. A short stop every 2 to 3 hours is enough for this drive.
This is a demanding drive. With 18 significant decision points across 130.9 miles, you will need to stay alert - especially through interchange areas and urban stretches. Consider splitting it into segments if you are not comfortable with fast highway navigation.
The main spots that need attention: at 0.3 miles (CO 115): Sharp turn - reduce speed on approach. Lane positioning matters here; at 32.3 miles: Lane positioning matters here. Multiple destination signs - pick the right one; at 32.5 miles: Lane positioning matters here. Multiple destination signs - pick the right one.
The route from Penrose, CO to Boulder, CO does not surface many named destination signs beyond the main corridor.
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