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

The driving distance from Castle Rock, CO to Frederick, CO is about 57 miles (91.7 km), with a travel time of about 01h 13m by car.

  • The straight-line flight distance is about 50.4 miles (81.1 km).
  • For a round trip, plan for roughly 02h 26m 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
56.99 mi
01h 13m
Flight
50.41 mi
81.13 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
50.41 mi
Kilometers
81.13 km
Flight Time
00h 06m

Driving Distance

Road route
56.99 mi
Kilometers
91.72 km
Drive Time
01h 13m

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 13m.

Arrival Snapshot
Arrive in Frederick
Thu, Apr 23, 4:21 AM MDT
Return by in Castle Rock
Thu, Apr 23, 5:34 AM MDT
Useful when you're deciding between a quick errand, a day trip, or a longer stop.
Leave Castle Rock
2026-04-23T03:08
Arrive Frederick
Thu, Apr 23, 4:21 AM MDT
Route Timing
01h 13m
One way by road
Best Departure Window
8:00 AM to 10:00 AM MDT
Aim for a morning departure
Arrive between
9:13 AM to 11:13 AM MDT

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

Leave by
4:04 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
Denver
CO

The twentieth most populous city in the United States and the center of the Denver metropolitan area.

From Castle Rock
28.5 mi
00h 36m
To Frederick
28.5 mi
00h 36m

Route Weather Snapshot

Check the forecast at both ends before you head out.

Origin
63°F
Thursday

Sunny then Slight Chance Rain Showers

Starts
Thu, Apr 23 6:00 AM MDT
Wind
10 to 18 mph WNW
Destination
68°F
Thursday

Mostly Sunny

Starts
Thu, Apr 23 6:00 AM MDT
Wind
12 to 21 mph WNW

Driving Route Map

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

Turn-by-Turn Driving Directions

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

  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

    4.1 mi · 4 min · Dwight D. Eisenhower Highway

  10. 10

    Take the exit slight right toward CR 8: Erie Parkway, Summit Boulevard

    1318 ft · 25 sec

  11. 11

    Turn right onto Summit Boulevard

    2 mi · 4 min · Summit Boulevard

  12. 12

    Turn left onto Colorado Boulevard

    3.2 mi · 5 min · Colorado Boulevard

  13. 13

    Enter the roundabout and take exit 1 toward Colorado Boulevard

    60 m · 4 sec · Colorado Boulevard

  14. 14

    Exit the roundabout onto Colorado Boulevard

    2647 ft · 50 sec · Colorado Boulevard

  15. 15

    Enter the roundabout and take exit 1 toward 5th Street

    5 m · 1 sec · 5th Street

  16. 16

    Exit the roundabout onto 5th Street

    1310 ft · 1 min · 5th Street

  17. 17

    Turn left

    27 m · 8 sec

  18. 18

    Turn right

    33 m · 10 sec

  19. 19

    At the end of the road, turn right

    14 m · 3 sec

  20. 20

    Arrive at your destination

    0 m · 1 sec

Car Route Details

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

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
20 steps
12 turns on the saved route
Ramps & Exits
8
1 merges, 7 ramps or exits
Navigation Density
35.1 / 100 mi
Decision points by distance
Main Roads
I 25 North
36.2 mi · 64%
North Valley Highway
9.6 mi · 17%
Dwight D. Eisenhower Highway
4.11 mi · 7%
Colorado Boulevard
3.77 mi · 7%
Summit Boulevard
1.99 mi · 3%
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 13m
Day trip friendly
Same-Day Return
02h 26m
Round-trip wheel time
Road vs Air
+6.6 mi
50.4 mi direct line
Halfway Stop
Denver
00h 36m from Castle Rock
Leave By
4:04 PM MDT
Morning start is best
Weather Watch

Sunny then Slight Chance Rain Showers leaving Castle Rock and Mostly Sunny near Frederick.

Trip Questions

Direct answers travelers usually want before committing to the drive.

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

The road trip is about 57 miles (91.7 km) and usually takes 01h 13m 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?

Denver is a useful midpoint, sitting about 28.5 miles from Castle Rock and 28.5 miles from Frederick.

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

The direct path is about 50.4 miles (81.1 km), while the road route adds roughly 6.6 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 4:04 PM MDT.

How much will gas cost for this route?

Using about 28.3 MPG, regular gas is estimated at $7.43 one way or $14.87 round trip. Estimated CO2 is about 17.9 kg one way.

What should you check before leaving?

Before you leave, expect Sunny then Slight Chance Rain Showers around Castle Rock and Mostly Sunny near Frederick.

Stop Ideas Near Denver

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 Denver and the surrounding midpoint area.
Fairplay Park
Scenic stop 10.8 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 1.4 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
Town Hall Arts Center
Nearby stop 8.1 mi away

Town Hall Arts Center

Littleton , CO
2450 Main St, Littleton, CO 80120
Rating 4.7/5 204 reviews Performing arts theater,Art gallery
Municipal Court Park
Scenic stop 7.2 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 Denver.

BUS

Denver (Bus Station), Colorado

1 mi away
1055 19th Street
RAIL

Union Station

2 mi away
1701 Wynkoop Street
BUS

Boulder, Colorado

44 mi away
30th & Diagonal Highway
BUS

Pine Junction, CO

46 mi away
76 Mount Evans Boulevard

Flight Path Map

This map shows the direct air route between Castle Rock and Frederick. Straight-line distance: 50.41 mi (81.13 km).

Castle Rock

#1 Castle Rock

The most populous city in Douglas County, Colorado.

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

#2 Frederick

Settlement in Weld County, Colorado, United States

Population11,515
Coordinates40.0991500, -104.9372000
Altitude1519
CountryUnited States
Start: Castle Rock (-104.85609, 39.37221)
End: Frederick (-104.9372, 40.09915)

Estimated Travel Time

Distance: 92 km by road

SpeedTime
30 mph (48.3 km/h)01h 53m
40 mph (64.37 km/h)01h 25m
50 mph (80.47 km/h)01h 08m
60 mph (96.56 km/h)00h 56m
70 mph (112.65 km/h)00h 48m
80 mph (129 km/h)00h 42m

Fuel, Round Trip and CO2

Estimated fuel cost and emissions for this route.

One-way fuel
2.01 gal
7.61 L · about $7.43
Round trip
$14.87
4.02 gal · 15.22 L
Estimated CO2
17.9 kg one way
Round trip: 35.7 kg / 79 lb CO2, using regular gasoline.
Fuel$/galOne wayRound trip
Regular gas $3.70 $7.43 $14.87
Mid-grade $4.08 $8.21 $16.42
Premium $4.39 $8.83 $17.65
Diesel $4.74 $9.52 $19.04

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 Frederick. The current time is 03:08:48.

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.