How far is Lamar, CO from Boulder, CO?
The driving distance from Lamar, CO to Boulder, CO is about 234.3 miles (377.1 km), with a travel time of about 03h 54m by car.
- The straight-line flight distance is about 194.8 miles (313.5 km).
- For a round trip, plan for roughly 07h 49m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 AM MDT.
Reverse, save, or send this route
This drive is better planned with a longer stop or an overnight stay. Copy the route link, send it to another device, or print a clean version before you head out.
This drive is better planned with a longer stop or an overnight stay.
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 03h 54m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
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.
City in Lincoln County, Colorado, United States of America
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Lamar and Boulder.
Turn-by-Turn Driving Directions
Step-by-step road directions between Lamar and Boulder.
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1
Start on West Elm Street
133 m · 19 sec · West Elm Street
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2
Turn left onto South Main Street
1.8 mi · 4 min · South Main Street
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3
Continue straight
5.7 mi · 7 min
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4
Take the exit slight right toward US 287 North: Limon
1885 ft · 32 sec
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5
Keep slight right to continue on US 287 North: Limon
107.6 mi · 2 hr 11 min
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6
Turn left onto I 70 West: Denver
1634 ft · 40 sec
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7
Merge slight left onto Dwight D. Eisenhower Highway
76.6 mi · 1 hr 17 min · Dwight D. Eisenhower Highway
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8
Continue on Tuskegee Airmen Memorial Highway
3.4 mi · 4 min · Tuskegee Airmen Memorial Highway
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9
Keep slight right to continue on Tuskegee Airmen Memorial Highway
2.8 mi · 4 min · Tuskegee Airmen Memorial Highway
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10
Keep slight right to continue on Dwight D. Eisenhower Highway
6.6 mi · 9 min · Dwight D. Eisenhower Highway
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11
Continue on Denver–Boulder Turnpike
2.4 mi · 3 min · Denver–Boulder Turnpike
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12
Keep slight right to continue on Denver–Boulder Turnpike
1.7 mi · 2 min · Denver–Boulder Turnpike
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13
Keep slight right to continue on Denver–Boulder Turnpike
2.3 mi · 3 min · Denver–Boulder Turnpike
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14
Keep slight right to continue on Denver–Boulder Turnpike
1.9 mi · 2 min · Denver–Boulder Turnpike
-
15
Keep slight right to continue on Denver–Boulder Turnpike
2.1 mi · 2 min · Denver–Boulder Turnpike
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16
Keep slight right to continue on Denver–Boulder Turnpike
2.9 mi · 3 min · Denver–Boulder Turnpike
-
17
Keep slight right to continue on Denver–Boulder Turnpike
2.4 mi · 3 min · Denver–Boulder Turnpike
-
18
Keep slight right to continue on Denver–Boulder Turnpike
2.2 mi · 3 min · Denver–Boulder Turnpike
-
19
Keep slight left to continue on Denver–Boulder Turnpike
2.3 mi · 3 min · Denver–Boulder Turnpike
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20
Continue on 28th Street
1.2 km · 2 min · 28th Street
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21
Turn left onto Arapahoe Avenue
1 km · 2 min · Arapahoe Avenue
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22
Turn right onto 19th Street
44 m · 11 sec · 19th Street
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23
Turn left
27 m · 5 sec
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24
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Lamar and Boulder.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
US 287 North
Keep slight right to continue on US 287 North: Limon
108 mi · 02h 11m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A longer out-and-back drive
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
Sunny leaving Lamar and Mostly Sunny near Boulder.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Lamar to Boulder?
The road trip is about 234.3 miles (377.1 km) and usually takes 03h 54m in normal driving conditions.
Is this a same-day trip or an overnight route?
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
What is the halfway point on this route?
Limon is a useful midpoint, sitting about 113.3 miles from Lamar and 121 miles from Boulder.
How much longer is the road route than the straight-line distance?
The direct path is about 194.8 miles (313.5 km), while the road route adds roughly 39.5 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 6:00 AM to 8:00 AM MDT. If you want a more comfortable same-day return, try to leave by 9:10 AM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $30.58 one way or $61.16 round trip. Estimated CO2 is about 73.5 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Lamar and Mostly Sunny near Boulder.
Stop Ideas Near Limon
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Limon.
Colorado Springs, Colorado
Fort Morgan
Flight Path Map
This map shows the direct air route between Lamar and Boulder. Straight-line distance: 194.81 mi (313.51 km).
#1 Lamar
City in Colorado
| Population | 7,641 |
| Coordinates | 38.0872300, -102.6207500 |
| Altitude | 1103 |
| Country | United States |
#2 Boulder
The most populous city in Boulder County, Colorado.
| Population | 107,645 |
| Coordinates | 40.0149900, -105.2705500 |
| Altitude | 1624 |
| Country | United States |
End: (-105.27055, 40.014996)
Estimated Travel Time
Distance: 377 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 07h 48m |
| 40 mph (64.37 km/h) | 05h 51m |
| 50 mph (80.47 km/h) | 04h 41m |
| 60 mph (96.56 km/h) | 03h 54m |
| 70 mph (112.65 km/h) | 03h 20m |
| 80 mph (129 km/h) | 02h 55m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.70 | $30.58 | $61.16 |
| Mid-grade | $4.08 | $33.77 | $67.55 |
| Premium | $4.39 | $36.31 | $72.63 |
| Diesel | $4.74 | $39.17 | $78.35 |
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 23, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.