How far is Boulder, CO from Platteville, CO?
The driving distance from Boulder, CO to Platteville, CO is about 33.2 miles (53.4 km), with a travel time of about 00h 49m by car.
- The straight-line flight distance is about 27.4 miles (44.1 km).
- For a round trip, plan for roughly 01h 39m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM MDT.
Reverse, save, or send this route
This route works well as a day trip with time at the destination. Copy the route link, send it to another device, or print a clean version before you head out.
This route works well as a day trip with time at the destination.
Flight Distance
Driving Distance
Gas Cost Calculator
Leave and Arrive Planner
Pick a departure time to see your estimated arrival and same-day return window.
Drive time stays fixed at 00h 49m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
You are leaving earlier than the recommended window, which gives you extra margin for breaks and traffic.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
The most populous city in Boulder County, Colorado.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Sunny
Driving Route Map
The map below follows the saved road route between Boulder and Platteville.
Turn-by-Turn Driving Directions
Step-by-step road directions between Boulder and Platteville.
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1
Start on the route
27 m · 7 sec
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2
Turn right onto 19th Street
44 m · 14 sec · 19th Street
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3
Turn left onto Arapahoe Avenue
1.6 mi · 4 min · Arapahoe Avenue
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4
Turn left onto Foothills Parkway
2.5 mi · 4 min · Foothills Parkway
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5
Continue on Diagonal Highway
8.6 mi · 11 min · Diagonal Highway
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6
Continue on Ken Pratt Boulevard
5.4 mi · 8 min · Ken Pratt Boulevard
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7
Continue on Highway 119
3.1 mi · 4 min · Highway 119
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8
Turn left onto I 25 North
1400 ft · 34 sec
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9
Merge slight left onto Dwight D. Eisenhower Highway
2.4 mi · 2 min · Dwight D. Eisenhower Highway
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10
Take the exit slight right toward CO 66: Lyons, Longmont
1724 ft · 42 sec
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11
Turn right
8.3 mi · 14 min
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12
Turn left onto Main Street
3058 ft · 1 min · Main Street
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13
Turn right onto Marion Avenue
41 m · 6 sec · Marion Avenue
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14
Arrive at your destination
0 m · 1 sec · Marion Avenue
Car Route Details
A richer read on the saved driving route between Boulder and Platteville.
Turn-heavy local drive
The route has frequent decision points for its length, so lane choice and turn timing will matter more than cruising speed.
Diagonal Highway
Continue on Diagonal Highway
8.58 mi · 00h 11m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A comfortable day-trip route
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
Sunny leaving Boulder and Sunny near Platteville.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Boulder to Platteville?
The road trip is about 33.2 miles (53.4 km) and usually takes 00h 49m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
What is the halfway point on this route?
Longmont is a useful midpoint, sitting about 16.6 miles from Boulder and 16.6 miles from Platteville.
How much longer is the road route than the straight-line distance?
The direct path is about 27.4 miles (44.1 km), while the road route adds roughly 5.8 extra miles because roads do not follow the straight air line.
When is the best time to leave for this route?
A good departure window is usually 8:00 AM to 10:00 AM MDT. If you want a more comfortable same-day return, try to leave by 4:50 PM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $4.33 one way or $8.65 round trip. Estimated CO2 is about 10.4 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Boulder and Sunny near Platteville.
Stop Ideas Near Longmont
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Old Town Hall
Town of Frederick
Lafayette City Hall
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Longmont.
Longmont, Colorado
Boulder, Colorado
Fort Collins, Colorado
Denver (Bus Station), Colorado
Flight Path Map
This map shows the direct air route between Boulder and Platteville. Straight-line distance: 27.4 mi (44.1 km).
#1 Boulder
The most populous city in Boulder County, Colorado.
| Population | 107,645 |
| Coordinates | 40.0149900, -105.2705500 |
| Altitude | 1624 |
| Country | United States |
#2 Platteville
Human settlement in Weld County, Colorado, United States of America
| Population | 3,000 |
| Coordinates | 40.2149800, -104.8227500 |
| Altitude | 1467 |
| Country | United States |
End: Platteville (-104.82275, 40.21498)
Estimated Travel Time
Distance: 53 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 06m |
| 40 mph (64.37 km/h) | 00h 49m |
| 50 mph (80.47 km/h) | 00h 39m |
| 60 mph (96.56 km/h) | 00h 33m |
| 70 mph (112.65 km/h) | 00h 28m |
| 80 mph (129 km/h) | 00h 24m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.70 | $4.33 | $8.65 |
| Mid-grade | $4.08 | $4.78 | $9.56 |
| Premium | $4.39 | $5.14 | $10.27 |
| Diesel | $4.74 | $5.54 | $11.08 |
Assumes 8.3 L/100 km (about 28.3 MPG). CO2 is an estimate and varies by vehicle, fuel blend, traffic, and terrain.
Prices in Colorado · Apr 19, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.