How far is Frederick, MD from Longmont, CO?
The driving distance from Frederick, MD to Longmont, CO is about 1640.6 miles (2640.3 km), with a travel time of about 29h 38m by car.
- The straight-line flight distance is about 1465.1 miles (2357.9 km).
- For a round trip, plan for roughly 59h 16m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 7:30 AM EDT.
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 29h 38m.
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.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Clear
Driving Route Map
The map below follows the saved road route between Frederick and Longmont.
Turn-by-Turn Driving Directions
Step-by-step road directions between Frederick and Longmont.
-
1
Start on East Patrick Street
3027 ft · 2 min · East Patrick Street
-
2
Keep slight right to continue on West Patrick Street
2.7 mi · 6 min · West Patrick Street
-
3
Continue on Baltimore National Pike
1.1 km · 1 min · Baltimore National Pike
-
4
Take the ramp slight left toward I 70 West: Hagerstown, Hancock
1 km · 57 sec
-
5
Merge slight left onto Dwight D Eisenhower Highway
39.4 mi · 42 min · Dwight D Eisenhower Highway
-
6
Continue on I 70, US 40 (Dwight D Eisenhower Highway)
3.1 mi · 3 min · I 70, US 40 (Dwight D Eisenhower Highway)
-
7
Continue on Dwight D Eisenhower Highway
5 mi · 5 min · Dwight D Eisenhower Highway
-
8
Keep slight right to continue on Dwight D Eisenhower Highway
24 mi · 32 min · Dwight D Eisenhower Highway
-
9
Merge slight left onto Lincoln Highway
974 ft · 21 sec · Lincoln Highway
-
10
Take the exit slight right toward I 70, PATP: Pittsburgh, Harrisburg
1.6 mi · 2 min
-
11
Keep slight right to continue on I 70 West, I 76 West: Pittsburgh
1913 ft · 47 sec
-
12
Merge slight left onto Pennsylvania Turnpike
161.6 mi · 2 hr 56 min · Pennsylvania Turnpike
-
13
Continue on Ohio Turnpike
53.8 mi · 59 min · Ohio Turnpike
-
14
Keep slight left to continue on Ohio Turnpike
187.4 mi · 3 hr 21 min · Ohio Turnpike
-
15
Continue on Indiana Toll Road
135.8 mi · 2 hr 27 min · Indiana Toll Road
-
16
Take the exit slight right toward I 80 West, I 94, US 6: Des Moines
3216 ft · 1 min
-
17
Keep slight right to continue on I 94 West, I 80 West, SR 51, US 6 East
543 ft · 13 sec
-
18
Keep slight left to continue on I 94 West, I 80 West
14.2 mi · 20 min
-
19
Take the exit slight right toward US 41 North: Calumet Avenue, Hammond, Munster
1047 ft · 16 sec
-
20
Keep slight left to continue on Calumet Avenue South
1187 ft · 18 sec
-
21
Keep slight left
1805 ft · 28 sec
-
22
Merge slight left onto Borman Expressway
2724 ft · 42 sec · Borman Expressway
-
23
Continue on Kingery Expressway
1.3 km · 1 min · Kingery Expressway
-
24
Take the exit slight right toward IL 394 South, I 94 West: Danville, Chicago
1.5 mi · 2 min
-
25
Keep slight left to continue on I 80 West, I 294 North
1703 ft · 26 sec
-
26
Merge slight left onto Tri-State Tollway
4.8 mi · 7 min · Tri-State Tollway
-
27
Keep slight right to continue on I 80 West: Iowa
145.4 mi · 2 hr 41 min
-
28
Keep slight left to continue on I 74 West, I 280 West: Moline, Rock Island
9.6 mi · 10 min
-
29
Keep slight left to continue on I 280 West: Des Moines
82 mi · 1 hr 30 min
-
30
Continue straight
102 mi · 1 hr 51 min
-
31
Keep slight right to continue on I 80 West: Omaha
95.5 mi · 1 hr 43 min
-
32
Keep slight left to continue on I 80 West: Council Bluffs, Omaha Nebraska
23.7 mi · 26 min
-
33
Keep slight left to continue on I 80 West Express: Council Bluffs, Omaha
355.4 mi · 6 hr 3 min
-
34
Keep slight right to continue on I 76 West: Denver
156.2 mi · 2 hr 36 min
-
35
Take the exit slight right toward CO 52: Hudson
1129 ft · 27 sec
-
36
Enter the roundabout and take exit 1 toward East Bison Highway
7 m · 1 sec · East Bison Highway
-
37
Exit the roundabout onto East Bison Highway
1468 ft · 25 sec · East Bison Highway
-
38
Enter the roundabout and take exit 2 toward East Bison Highway
41 m · 2 sec · East Bison Highway
-
39
Exit the roundabout onto East Bison Highway
8 mi · 13 min · East Bison Highway
-
40
Continue on 1st Street
9.7 mi · 17 min · 1st Street
-
41
Take the ramp slight right toward I 25 North: Fort Collins
1736 ft · 43 sec
-
42
Merge slight left onto Dwight D. Eisenhower Highway
4.5 mi · 4 min · Dwight D. Eisenhower Highway
-
43
Take the exit slight right toward CO 119 West: Firestone Boulevard
996 ft · 19 sec
-
44
Keep slight left to continue on CO 119 West: Longmont
88 m · 8 sec
-
45
Turn left onto Highway 119
3.1 mi · 4 min · Highway 119
-
46
Continue on East Ken Pratt Boulevard
1.6 mi · 2 min · East Ken Pratt Boulevard
-
47
Take the exit slight right
69 m · 7 sec
-
48
Turn right onto East 3rd Avenue
1.9 mi · 4 min · East 3rd Avenue
-
49
Turn right onto Kimbark Street
1084 ft · 55 sec · Kimbark Street
-
50
Turn left
57 m · 16 sec
-
51
Turn right
33 m · 8 sec
-
52
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Frederick and Longmont.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
I 80 West Express
Keep slight left to continue on I 80 West Express: Council Bluffs, Omaha
355 mi · 06h 03m
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.
Smoke leaving Frederick and Mostly Clear near Longmont.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Frederick to Longmont?
The road trip is about 1640.6 miles (2640.3 km) and usually takes 29h 38m 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?
Walcott is a useful midpoint, sitting about 818.7 miles from Frederick and 821.9 miles from Longmont.
How much longer is the road route than the straight-line distance?
The direct path is about 1465.1 miles (2357.9 km), while the road route adds roughly 175.5 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 7:30 AM EDT. 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 $236.54 one way or $473.08 round trip. Estimated CO2 is about 514.5 kg one way.
Do you cross a time zone on this route?
Yes. There is about a 2 hour time difference between Frederick and Longmont, so arrival and return times should be read in local time.
What should you check before leaving?
Before you leave, expect Smoke around Frederick and Mostly Clear near Longmont.
Stop Ideas Near Walcott
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 Walcott.
Davenport, Iowa
Rock Island, IL
Moline, Illinois
Galesburg station
Flight Path Map
This map shows the direct air route between Frederick and Longmont. Straight-line distance: 1465.11 mi (2357.86 km).
#1 Frederick
The second most populous city in Frederick County, Maryland.
| Population | 73,308 |
| Coordinates | 39.4142700, -77.4105400 |
| Altitude | 87 |
| Country | United States |
#2 Longmont
The most populous city in Boulder County, Colorado.
| Population | 98,445 |
| Coordinates | 40.1672100, -105.1019300 |
| Altitude | 1519 |
| Country | United States |
End: Longmont (-105.10193, 40.16721)
Estimated Travel Time
Distance: 2640 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 54h 39m |
| 40 mph (64.37 km/h) | 41h 01m |
| 50 mph (80.47 km/h) | 32h 48m |
| 60 mph (96.56 km/h) | 27h 20m |
| 70 mph (112.65 km/h) | 23h 26m |
| 80 mph (129 km/h) | 20h 28m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.09 | $236.54 | $473.08 |
| Mid-grade | $4.60 | $266.24 | $532.47 |
| Premium | $4.95 | $286.79 | $573.57 |
| Diesel | $5.98 | $346.18 | $692.36 |
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 Maryland · Jul 17, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.