How far is Longmont, CO from Montrose, CO?
The driving distance from Longmont, CO to Montrose, CO is about 321.5 miles (517.4 km), with a travel time of about 06h 22m by car.
- The straight-line flight distance is about 188.6 miles (303.6 km).
- For a round trip, plan for roughly 12h 44m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 7:30 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 06h 22m.
Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
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.
Town of the United States
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 Longmont and Montrose.
Turn-by-Turn Driving Directions
Step-by-step road directions between Longmont and Montrose.
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1
Start on the route
19 m · 10 sec
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2
Turn left onto 5th Avenue
53 m · 10 sec · 5th Avenue
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3
Turn left onto Main Street
17.3 mi · 25 min · Main Street
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4
Continue straight
2797 ft · 1 min
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5
Turn left onto US 36 East: Denver
1737 ft · 44 sec
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6
Merge slight left onto Denver–Boulder Turnpike
1.2 mi · 1 min · Denver–Boulder Turnpike
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7
Keep slight right to continue on Denver–Boulder Turnpike
1.9 mi · 2 min · Denver–Boulder Turnpike
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8
Keep slight right to continue on Denver–Boulder Turnpike
1.2 km · 53 sec · Denver–Boulder Turnpike
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9
Take the exit slight right toward CO 95 South: Sheridan Boulevard
1708 ft · 37 sec
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10
Turn right onto Sheridan Boulevard
4.3 mi · 7 min · Sheridan Boulevard
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11
Take the ramp slight right toward I 76 West
1712 ft · 44 sec
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12
Merge slight left onto Heartland Expressway
1.3 mi · 2 min · Heartland Expressway
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13
Merge slight left
232.9 mi · 4 hr 18 min
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14
Take the exit slight right toward I 70 Business, US 6, US 50: Clifton, Grand Junction, Delta
1.6 mi · 3 min
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15
Continue straight
1290 ft · 32 sec
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16
Turn left onto 32 Road
5.4 mi · 9 min · 32 Road
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17
At the end of the road, turn left onto United States Highway 50
11.7 mi · 15 min · United States Highway 50
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18
Continue straight
14.8 mi · 17 min
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19
Turn right onto G50 Road
2.2 mi · 3 min · G50 Road
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20
Continue on G Road
1.1 km · 1 min · G Road
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21
Continue on G Road
1.6 mi · 3 min · G Road
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22
Continue on West 5th Street
1068 ft · 30 sec · West 5th Street
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23
Turn right onto Confluence Drive
1.3 km · 1 min · Confluence Drive
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24
Take the exit slight right
767 ft · 15 sec
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25
Merge slight left onto Main Street
20.8 mi · 27 min · Main Street
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26
Continue on South Townsend Avenue
760 ft · 27 sec · South Townsend Avenue
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27
Continue on South Townsend Avenue
109 m · 16 sec · South Townsend Avenue
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28
Turn right onto South 1st Street
70 m · 10 sec · South 1st Street
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29
Arrive at your destination
0 m · 1 sec · South 1st Street
Car Route Details
A richer read on the saved driving route between Longmont and Montrose.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
Heartland Expressway
Merge slight left
233 mi · 04h 18m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
Better with a longer stop
This route is long enough that most travelers will be better off planning an overnight stay or a more deliberate stop window.
Sunny leaving Longmont and Sunny near Montrose.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Longmont to Montrose?
The road trip is about 321.5 miles (517.4 km) and usually takes 06h 22m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is long enough that most travelers will be better off planning an overnight stay or a more deliberate stop window.
What is the halfway point on this route?
Gypsum is a useful midpoint, sitting about 160.6 miles from Longmont and 160.9 miles from Montrose.
How much longer is the road route than the straight-line distance?
The direct path is about 188.6 miles (303.6 km), while the road route adds roughly 132.9 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 7:30 AM MDT. Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $41.97 one way or $83.94 round trip. Estimated CO2 is about 100.9 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Longmont and Sunny near Montrose.
Stop Ideas Near Gypsum
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 Gypsum.
Glenwood Springs
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Fairplay, CO
Flight Path Map
This map shows the direct air route between Longmont and Montrose. Straight-line distance: 188.67 mi (303.64 km).
#1 Longmont
The most populous city in Boulder County, Colorado.
| Population | 98,445 |
| Coordinates | 40.1672100, -105.1019300 |
| Altitude | 1519 |
| Country | United States |
#2 Montrose
Coastal resort town and former royal burgh in Angus, Scotland
| Population | 19,902 |
| Coordinates | 38.4783200, -107.8761700 |
| Altitude | 1770 |
| Country | United States |
End: Montrose (-107.87617, 38.47832)
Estimated Travel Time
Distance: 517 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 10h 42m |
| 40 mph (64.37 km/h) | 08h 02m |
| 50 mph (80.47 km/h) | 06h 25m |
| 60 mph (96.56 km/h) | 05h 21m |
| 70 mph (112.65 km/h) | 04h 35m |
| 80 mph (129 km/h) | 04h 00m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.70 | $41.97 | $83.94 |
| Mid-grade | $4.08 | $46.35 | $92.71 |
| Premium | $4.39 | $49.84 | $99.68 |
| Diesel | $4.74 | $53.76 | $107.53 |
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.