How far is Castle Rock, CO from Berthoud, CO?

The driving distance from Castle Rock, CO to Berthoud, CO is about 74.8 miles (120.4 km), with a travel time of about 01h 29m by car.

  • The straight-line flight distance is about 65.7 miles (105.8 km).
  • For a round trip, plan for roughly 02h 59m of driving time before adding stops, traffic, or weather delays.
  • A comfortable departure window is usually 8:00 AM to 10:00 AM MDT.
Trip Tools

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.

Reverse Route
Quick Snapshot
Road
74.79 mi
01h 29m
Flight
65.77 mi
105.85 km direct

This route works well as a day trip with time at the destination.

Learn Distance

Choose another destination from Castle Rock.

Flight Distance

Direct air line
65.77 mi
Kilometers
105.85 km
Flight Time
00h 07m

Driving Distance

Road route
74.79 mi
Kilometers
120.36 km
Drive Time
01h 29m

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 01h 29m.

Arrival Snapshot
Arrive in Berthoud
Wed, Apr 22, 11:33 PM MDT
Return by in Castle Rock
Thu, Apr 23, 1:03 AM MDT
Useful when you're deciding between a quick errand, a day trip, or a longer stop.
Leave Castle Rock
2026-04-22T22:04
Arrive Berthoud
Wed, Apr 22, 11:33 PM MDT
Route Timing
01h 29m
One way by road
Best Departure Window
8:00 AM to 10:00 AM MDT
Aim for a morning departure
Arrive between
9:30 AM to 11:30 AM MDT

A morning start gives you useful time at the destination and keeps the return out of the late evening.

Leave by
3:30 PM MDT
Keeps a same-day return open with about 03h 00m at the destination.
Back in Castle Rock
9:30 PM MDT
Morning start is best

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.

Mid-route stop
Federal Heights
CO

City in Adams County, Colorado, United States

From Castle Rock
37.4 mi
00h 44m
To Berthoud
37.3 mi
00h 44m

Route Weather Snapshot

Check the forecast at both ends before you head out.

Origin
77°F
Wednesday

Sunny

Starts
Wed, Apr 22 6:00 AM MDT
Wind
10 to 28 mph SW
Destination
82°F
Wednesday

Mostly Sunny

Starts
Wed, Apr 22 6:00 AM MDT
Wind
7 to 24 mph SW

Driving Route Map

The map below follows the saved road route between Castle Rock and Berthoud.

Turn-by-Turn Driving Directions

Step-by-step road directions between Castle Rock and Berthoud.

  1. 1

    Start on North Cantril Street

    27 m · 8 sec · North Cantril Street

  2. 2

    Turn left onto 3rd Street

    641 ft · 23 sec · 3rd Street

  3. 3

    Exit the roundabout onto 3rd Street

    135 m · 18 sec · 3rd Street

  4. 4

    Turn right onto North Wilcox Street

    2807 ft · 2 min · North Wilcox Street

  5. 5

    Take the ramp straight toward I 25 North

    1715 ft · 42 sec

  6. 6

    Merge slight left

    35.9 mi · 43 min

  7. 7

    Keep slight right to continue on North Valley Highway

    4.3 mi · 6 min · North Valley Highway

  8. 8

    Keep slight right to continue on North Valley Highway

    5.3 mi · 6 min · North Valley Highway

  9. 9

    Continue on Dwight D. Eisenhower Highway

    22.2 mi · 22 min · Dwight D. Eisenhower Highway

  10. 10

    Take the exit slight right toward CO 56 West: Berthound

    1232 ft · 26 sec

  11. 11

    Keep slight left to continue on CO 56 West: Berthound

    104 m · 8 sec

  12. 12

    Enter the roundabout and take exit 3 toward East Highway 56

    83 m · 16 sec · East Highway 56

  13. 13

    Exit the roundabout onto East Highway 56

    778 ft · 22 sec · East Highway 56

  14. 14

    Enter the roundabout and take exit 1 toward East Highway 56

    28 m · 5 sec · East Highway 56

  15. 15

    Exit the rotary onto East Highway 56

    3.9 mi · 5 min · East Highway 56

  16. 16

    Continue on East County Road 8

    1 mi · 2 min · East County Road 8

  17. 17

    Enter the roundabout and take exit 2 toward Mountain Avenue

    45 m · 8 sec · Mountain Avenue

  18. 18

    Exit the roundabout onto Mountain Avenue

    1492 ft · 55 sec · Mountain Avenue

  19. 19

    Turn right onto North 4th Street

    1144 ft · 37 sec · North 4th Street

  20. 20

    Turn left onto Lake Avenue

    102 m · 15 sec · Lake Avenue

  21. 21

    Arrive at your destination

    0 m · 1 sec · Lake Avenue

Car Route Details

A richer read on the saved driving route between Castle Rock and Berthoud.

OSRM road route
Drive Character

Highway-focused drive

Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.

Directions
21 steps
11 turns on the saved route
Ramps & Exits
10
1 merges, 9 ramps or exits
Navigation Density
28.1 / 100 mi
Decision points by distance
Main Roads
I 25 North
36.2 mi · 48%
Dwight D. Eisenhower Highway
22.2 mi · 30%
North Valley Highway
9.6 mi · 13%
East Highway 56
4.1 mi · 5%
East County Road 8
1.01 mi · 1%
North Wilcox Street
0.53 mi · 1%
Longest Stretch

I 25 North

Merge slight left

35.9 mi · 00h 43m

Route Summary

A quick read on whether this route feels easy, ambitious, or worth planning around.

Trip Read

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.

Drive Time
01h 29m
Day trip friendly
Same-Day Return
03h 00m
Round-trip wheel time
Road vs Air
+9.1 mi
65.7 mi direct line
Halfway Stop
Federal Heights
00h 44m from Castle Rock
Leave By
3:30 PM MDT
Morning start is best
Weather Watch

Sunny leaving Castle Rock and Mostly Sunny near Berthoud.

Trip Questions

Direct answers travelers usually want before committing to the drive.

How long does it take to drive from Castle Rock to Berthoud?

The road trip is about 74.8 miles (120.4 km) and usually takes 01h 29m 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?

Federal Heights is a useful midpoint, sitting about 37.4 miles from Castle Rock and 37.3 miles from Berthoud.

How much longer is the road route than the straight-line distance?

The direct path is about 65.7 miles (105.8 km), while the road route adds roughly 9.1 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 3:30 PM MDT.

How much will gas cost for this route?

Using about 28.3 MPG, regular gas is estimated at $9.76 one way or $19.53 round trip. Estimated CO2 is about 23.5 kg one way.

What should you check before leaving?

Before you leave, expect Sunny around Castle Rock and Mostly Sunny near Berthoud.

Stop Ideas Near Federal Heights

Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.

Mid-route Guidance
These suggestions come from reviewed places and nearby services around Federal Heights and the surrounding midpoint area.
Fairplay Park
Scenic stop 11.4 mi away

Fairplay Park

Aurora , CO
2200 Altura Blvd, Aurora, CO 80011
Rating 4.2/5 125 reviews Tourist attraction,Park
Denver City Council
Meeting point 7.6 mi away

Denver City Council

Denver , CO
1437 Bannock St rm 451, Denver, CO 80202
Rating 3.6/5 92 reviews City government office,County government office
Lafayette City Hall
Nearby stop 11.1 mi away

Lafayette City Hall

Lafayette , CO
1290 S Public Rd, Lafayette, CO 80026
Rating 5.0/5 2 reviews City administration
Municipal Court Park
Scenic stop 2.4 mi away

Municipal Court Park

Westminster , CO
3025 W 76th Ave, Westminster, CO 80030
Rating 3.8/5 94 reviews Park

Transit and Meeting Points

Useful pickup, handoff, or rendezvous points close to Federal Heights.

BUS

Denver (Bus Station), Colorado

11 mi away
1055 19th Street
RAIL

Union Station

11 mi away
1701 Wynkoop Street
BUS

Boulder, Colorado

33 mi away
30th & Diagonal Highway
BUS

Longmont, Colorado

36 mi away
623 Main St.

Flight Path Map

This map shows the direct air route between Castle Rock and Berthoud. Straight-line distance: 65.77 mi (105.85 km).

Castle Rock

#1 Castle Rock

The most populous city in Douglas County, Colorado.

Population70,567
Coordinates39.3722100, -104.8560900
Altitude1897
CountryUnited States
Berthoud

#2 Berthoud

Town of the United States

Population10,806
Coordinates40.3083200, -105.0810900
Altitude1535
CountryUnited States
Start: Castle Rock (-104.85609, 39.37221)
End: Berthoud (-105.08109, 40.30832)

Estimated Travel Time

Distance: 120 km by road

SpeedTime
30 mph (48.3 km/h)02h 29m
40 mph (64.37 km/h)01h 52m
50 mph (80.47 km/h)01h 29m
60 mph (96.56 km/h)01h 14m
70 mph (112.65 km/h)01h 04m
80 mph (129 km/h)00h 55m

Fuel, Round Trip and CO2

Estimated fuel cost and emissions for this route.

One-way fuel
2.64 gal
9.99 L · about $9.76
Round trip
$19.53
5.28 gal · 19.98 L
Estimated CO2
23.5 kg one way
Round trip: 46.9 kg / 103 lb CO2, using regular gasoline.
Fuel$/galOne wayRound trip
Regular gas $3.70 $9.76 $19.53
Mid-grade $4.08 $10.78 $21.56
Premium $4.39 $11.59 $23.18
Diesel $4.74 $12.51 $25.01

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

There is no time difference between Castle Rock and Berthoud. The current time is 22:04:03.

Distance to Other Cities

Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.

How did we calculate? Place names are translated into coordinates. The Haversine formula calculates straight-line distance; driving distance uses road network data.