How far is Boulder, CO from Cimarron Hills, CO?

The driving distance from Boulder, CO to Cimarron Hills, CO is about 99.5 miles (160.2 km), with a travel time of about 01h 59m by car.

  • The straight-line flight distance is about 85.5 miles (137.6 km).
  • For a round trip, plan for roughly 03h 58m 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
99.56 mi
01h 59m
Flight
85.53 mi
137.64 km direct

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

Learn Distance

Choose another destination from Boulder.

Flight Distance

Direct air line
85.53 mi
Kilometers
137.64 km
Flight Time
00h 10m

Driving Distance

Road route
99.56 mi
Kilometers
160.22 km
Drive Time
01h 59m

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 59m.

Arrival Snapshot
Arrive in Cimarron Hills
Thu, Apr 16, 2:32 PM MDT
Return by in Boulder
Thu, Apr 16, 4:31 PM MDT
Useful when you're deciding between a quick errand, a day trip, or a longer stop.
Leave Boulder
2026-04-16T12:33
Arrive Cimarron Hills
Thu, Apr 16, 2:32 PM MDT
Route Timing
01h 59m
One way by road
Best Departure Window
8:00 AM to 10:00 AM MDT
Aim for a morning departure
Arrive between
9:59 AM to 11:59 AM MDT

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

Leave by
2:32 PM MDT
Keeps a same-day return open with about 03h 00m at the destination.
Back in Boulder
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
Castle Pines
CO

City in Douglas County, Colorado, United States of America

From Boulder
49.8 mi
00h 59m
To Cimarron Hills
49.8 mi
00h 59m

Route Weather Snapshot

Check the forecast at both ends before you head out.

Origin
70°F
Thursday

Mostly Sunny

Starts
Thu, Apr 16 6:00 AM MDT
Wind
8 to 16 mph SW
Destination
39°F
Overnight

Mostly Clear

Starts
Thu, Apr 16 2:00 AM MDT
Wind
5 mph NNW

Driving Route Map

The map below follows the saved road route between Boulder and Cimarron Hills.

Turn-by-Turn Driving Directions

Step-by-step road directions between Boulder and Cimarron Hills.

  1. 1

    Start on the route

    27 m · 7 sec

  2. 2

    Turn right onto 19th Street

    44 m · 14 sec · 19th Street

  3. 3

    Turn left onto Arapahoe Avenue

    3210 ft · 2 min · Arapahoe Avenue

  4. 4

    Turn right onto 28th Street

    1.2 km · 2 min · 28th Street

  5. 5

    Turn straight onto Denver–Boulder Turnpike

    3.4 mi · 4 min · Denver–Boulder Turnpike

  6. 6

    Keep slight right to continue on Denver–Boulder Turnpike

    1.7 mi · 2 min · Denver–Boulder Turnpike

  7. 7

    Keep slight right to continue on Denver–Boulder Turnpike

    2.6 mi · 3 min · Denver–Boulder Turnpike

  8. 8

    Keep slight right to continue on Denver–Boulder Turnpike

    2.4 mi · 3 min · Denver–Boulder Turnpike

  9. 9

    Keep slight right to continue on Denver–Boulder Turnpike

    2.2 mi · 3 min · Denver–Boulder Turnpike

  10. 10

    Keep slight right to continue on Denver–Boulder Turnpike

    1.9 mi · 2 min · Denver–Boulder Turnpike

  11. 11

    Keep slight right to continue on Denver–Boulder Turnpike

    2.5 mi · 3 min · Denver–Boulder Turnpike

  12. 12

    Keep slight right to continue on Denver–Boulder Turnpike

    2 mi · 2 min · Denver–Boulder Turnpike

  13. 13

    Keep slight right to continue on Denver–Boulder Turnpike

    1.1 mi · 1 min · Denver–Boulder Turnpike

  14. 14

    Take the exit slight right toward I 25 south: Denver

    2497 ft · 47 sec

  15. 15

    Continue on I 25 south: Denver

    2037 ft · 34 sec

  16. 16

    Merge slight left onto North Valley Highway

    63 mi · 1 hr 10 min · North Valley Highway

  17. 17

    Take the exit slight right toward Interquest Parkway

    1.1 km · 2 min

  18. 18

    Continue on Interquest Parkway

    1.9 mi · 3 min · Interquest Parkway

  19. 19

    Turn right onto North Powers Boulevard

    10.1 mi · 13 min · North Powers Boulevard

  20. 20

    Turn left onto Constitution Avenue

    1.1 mi · 2 min · Constitution Avenue

  21. 21

    Turn right onto Peterson Road

    1.1 km · 2 min · Peterson Road

  22. 22

    Turn left onto Palmer Park Boulevard

    159 m · 13 sec · Palmer Park Boulevard

  23. 23

    Arrive at your destination

    0 m · 1 sec · Palmer Park Boulevard

Car Route Details

A richer read on the saved driving route between Boulder and Cimarron Hills.

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
23 steps
16 turns on the saved route
Ramps & Exits
3
1 merges, 2 ramps or exits
Navigation Density
23.1 / 100 mi
Decision points by distance
Main Roads
North Valley Highway
63 mi · 63%
Denver–Boulder Turnpike
19.7 mi · 20%
North Powers Boulevard
10.1 mi · 10%
Interquest Parkway
2.58 mi · 3%
Constitution Avenue
1.1 mi · 1%
I 25 south
0.86 mi · 1%
Longest Stretch

North Valley Highway

Merge slight left onto North Valley Highway

63 mi · 01h 10m

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 59m
Day trip friendly
Same-Day Return
03h 58m
Round-trip wheel time
Road vs Air
+14 mi
85.5 mi direct line
Halfway Stop
Castle Pines
00h 59m from Boulder
Leave By
2:32 PM MDT
Morning start is best
Weather Watch

Mostly Sunny leaving Boulder and Mostly Clear near Cimarron Hills.

Trip Questions

Direct answers travelers usually want before committing to the drive.

How long does it take to drive from Boulder to Cimarron Hills?

The road trip is about 99.5 miles (160.2 km) and usually takes 01h 59m 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?

Castle Pines is a useful midpoint, sitting about 49.8 miles from Boulder and 49.8 miles from Cimarron Hills.

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

The direct path is about 85.5 miles (137.6 km), while the road route adds roughly 14 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 2:32 PM MDT.

How much will gas cost for this route?

Using about 28.3 MPG, regular gas is estimated at $12.98 one way or $25.96 round trip. Estimated CO2 is about 31.2 kg one way.

What should you check before leaving?

Before you leave, expect Mostly Sunny around Boulder and Mostly Clear near Cimarron Hills.

Stop Ideas Near Castle Pines

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 Castle Pines and the surrounding midpoint area.
City of Littleton
Scenic stop 12.6 mi away

City of Littleton

Littleton , CO
2255 W Berry Ave, Littleton, CO 80165
Rating 5.0/5 1 reviews City government office,Local government office,Museum
Greenwood Village City Hall
Meeting point 9.5 mi away

Greenwood Village City Hall

Greenwood Village , CO
6060 S Quebec St, Greenwood Village, CO 80111
Rating 3.3/5 16 reviews City Hall
Town Hall Arts Center
Nearby stop 12.5 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

Transit and Meeting Points

Useful pickup, handoff, or rendezvous points close to Castle Pines.

BUS

Denver (Bus Station), Colorado

34 mi away
1055 19th Street
RAIL

Union Station

34 mi away
1701 Wynkoop Street
BUS

Pine Junction, CO

43 mi away
76 Mount Evans Boulevard
BUS

Colorado Springs, Colorado

70 mi away
120 South Weber Street

Flight Path Map

This map shows the direct air route between Boulder and Cimarron Hills. Straight-line distance: 85.53 mi (137.64 km).

Boulder

#1 Boulder

The most populous city in Boulder County, Colorado.

Population107,645
Coordinates40.0149900, -105.2705500
Altitude1624
CountryUnited States
Cimarron Hills

#2 Cimarron Hills

Census designated place

Population16,161
Coordinates38.8586100, -104.6988600
Altitude1965
CountryUnited States
Start: Boulder (-105.27055, 40.01499)
End: Cimarron Hills (-104.69886, 38.85861)

Estimated Travel Time

Distance: 160 km by road

SpeedTime
30 mph (48.3 km/h)03h 19m
40 mph (64.37 km/h)02h 29m
50 mph (80.47 km/h)01h 59m
60 mph (96.56 km/h)01h 39m
70 mph (112.65 km/h)01h 25m
80 mph (129 km/h)01h 14m

Fuel, Round Trip and CO2

Estimated fuel cost and emissions for this route.

One-way fuel
3.51 gal
13.3 L · about $12.98
Round trip
$25.96
7.02 gal · 26.6 L
Estimated CO2
31.2 kg one way
Round trip: 62.4 kg / 138 lb CO2, using regular gasoline.
Fuel$/galOne wayRound trip
Regular gas $3.70 $12.98 $25.96
Mid-grade $4.08 $14.33 $28.67
Premium $4.39 $15.41 $30.82
Diesel $4.74 $16.63 $33.25

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 16, 2026

There is no time difference between Boulder and Cimarron Hills. The current time is 12:33:10.

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.