How far is Longmont, CO from Black Forest, CO?
The driving distance from Longmont, CO to Black Forest, CO is about 101.4 miles (163.2 km), with a travel time of about 02h 00m by car.
- The straight-line flight distance is about 82.6 miles (132.9 km).
- For a round trip, plan for roughly 04h 01m 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 02h 00m.
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 second most populous city in Arapahoe 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 Longmont and Black Forest.
Turn-by-Turn Driving Directions
Step-by-step road directions between Longmont and Black Forest.
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1
Start on the route
19 m · 7 sec
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2
Turn right onto 5th Avenue
1025 ft · 47 sec · 5th Avenue
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3
Turn right onto Collyer Street
1255 ft · 42 sec · Collyer Street
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4
Turn left onto 3rd Avenue
1.8 mi · 3 min · 3rd Avenue
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5
Turn left onto East Ken Pratt Boulevard
1.6 mi · 2 min · East Ken Pratt Boulevard
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6
Continue on Highway 119
3 mi · 4 min · Highway 119
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7
Take the exit right toward I 25 South
2690 ft · 1 min · West I 25 Frontage Road
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8
Merge slight left onto Dwight D. Eisenhower Highway
11.9 mi · 12 min · Dwight D. Eisenhower Highway
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9
Continue on North Valley Highway
3187 ft · 36 sec · North Valley Highway
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10
Keep slight right to continue on North Valley Highway
8.8 mi · 11 min · North Valley Highway
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11
Keep slight right to continue on North Valley Highway
65 mi · 1 hr 12 min · North Valley Highway
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12
Take the exit slight right toward Interquest Parkway
1.1 km · 2 min
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13
Continue on Interquest Parkway
2.8 mi · 4 min · Interquest Parkway
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14
Turn right onto Shoup Road
4.3 mi · 8 min · Shoup Road
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15
Turn left onto Black Forest Road
25 m · 2 sec · Black Forest Road
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16
Arrive at your destination
0 m · 1 sec · Black Forest Road
Car Route Details
A richer read on the saved driving route between Longmont and Black Forest.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
North Valley Highway
Keep slight right to continue on North Valley Highway
65 mi · 01h 12m
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 Longmont and Sunny near Black Forest.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Longmont to Black Forest?
The road trip is about 101.4 miles (163.2 km) and usually takes 02h 00m 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?
Centennial is a useful midpoint, sitting about 50.8 miles from Longmont and 50.7 miles from Black Forest.
How much longer is the road route than the straight-line distance?
The direct path is about 82.6 miles (132.9 km), while the road route adds roughly 18.8 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 2:28 PM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $13.24 one way or $26.48 round trip. Estimated CO2 is about 31.8 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Longmont and Sunny near Black Forest.
Stop Ideas Near Centennial
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Fairplay Park
Denver City Council
Town Hall Arts Center
City of Littleton
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Centennial.
Denver (Bus Station), Colorado
Union Station
Pine Junction, CO
Boulder, Colorado
Flight Path Map
This map shows the direct air route between Longmont and Black Forest. Straight-line distance: 82.56 mi (132.86 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 Black Forest
Census designated place
| Population | 13,116 |
| Coordinates | 39.0130500, -104.7008100 |
| Altitude | 2246 |
| Country | United States |
End: Black Forest (-104.70081, 39.01305)
Estimated Travel Time
Distance: 163 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 03h 22m |
| 40 mph (64.37 km/h) | 02h 32m |
| 50 mph (80.47 km/h) | 02h 01m |
| 60 mph (96.56 km/h) | 01h 41m |
| 70 mph (112.65 km/h) | 01h 26m |
| 80 mph (129 km/h) | 01h 15m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.70 | $13.24 | $26.48 |
| Mid-grade | $4.08 | $14.62 | $29.24 |
| Premium | $4.39 | $15.72 | $31.44 |
| Diesel | $4.74 | $16.96 | $33.92 |
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.