How far is Broomfield, CO from New Castle, CO?

The driving distance from Broomfield, CO to New Castle, CO is about 177.3 miles (285.4 km), with a travel time of about 03h 28m by car.

  • The straight-line flight distance is about 132.4 miles (213 km).
  • For a round trip, plan for roughly 06h 57m of driving time before adding stops, traffic, or weather delays.
  • A comfortable departure window is usually 6:00 AM to 8:00 AM MDT.
Trip Tools

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.

Reverse Route
Quick Snapshot
Road
177.33 mi
03h 28m
Flight
132.34 mi
212.98 km direct

This drive is better planned with a longer stop or an overnight stay.

Learn Distance

Choose another destination from Broomfield.

Flight Distance

Direct air line
132.34 mi
Kilometers
212.98 km
Flight Time
00h 15m

Driving Distance

Road route
177.33 mi
Kilometers
285.39 km
Drive Time
03h 28m

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 03h 28m.

Arrival Snapshot
Arrive in New Castle
Sat, Apr 18, 6:49 AM MDT
Return by in Broomfield
Sat, Apr 18, 10:18 AM MDT
Useful when you're deciding between a quick errand, a day trip, or a longer stop.
Leave Broomfield
2026-04-18T03:20
Arrive New Castle
Sat, Apr 18, 6:49 AM MDT
Route Timing
03h 28m
One way by road
Best Departure Window
6:00 AM to 8:00 AM MDT
Leave early for more breathing room
Arrive between
9:29 AM to 11:29 AM MDT

An early departure helps you fit a real stop into the day without turning the return into a late-night drive.

Leave by
10:02 AM MDT
Keeps a same-day return open with about 04h 00m at the destination.
Back in Broomfield
9:00 PM MDT
Early departure recommended

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
Frisco
CO

Town in Summit County, Colorado, United States of America

From Broomfield
88.5 mi
01h 44m
To New Castle
88.8 mi
01h 44m

Route Weather Snapshot

Check the forecast at both ends before you head out.

Origin
54°F
Saturday

Slight Chance Snow Showers

Starts
Sat, Apr 18 6:00 AM MDT
Wind
6 to 12 mph NW
Destination
53°F
Saturday

Mostly Sunny

Starts
Sat, Apr 18 6:00 AM MDT
Wind
0 to 10 mph WSW

Driving Route Map

The map below follows the saved road route between Broomfield and New Castle.

Turn-by-Turn Driving Directions

Step-by-step road directions between Broomfield and New Castle.

  1. 1

    Start on the route

    58 m · 16 sec

  2. 2

    At the end of the road, turn right onto West 3rd Avenue

    83 m · 20 sec · West 3rd Avenue

  3. 3

    Turn left onto Nickel Street

    798 ft · 26 sec · Nickel Street

  4. 4

    Turn right

    43 m · 3 sec

  5. 5

    Keep slight left to continue on CO 121 South

    1525 ft · 45 sec

  6. 6

    Turn straight

    2276 ft · 1 min

  7. 7

    Turn left onto US 36 East: Denver

    1737 ft · 44 sec

  8. 8

    Merge slight left onto Denver–Boulder Turnpike

    1.2 mi · 1 min · Denver–Boulder Turnpike

  9. 9

    Keep slight right to continue on Denver–Boulder Turnpike

    1.9 mi · 2 min · Denver–Boulder Turnpike

  10. 10

    Keep slight right to continue on Denver–Boulder Turnpike

    1.2 km · 53 sec · Denver–Boulder Turnpike

  11. 11

    Take the exit slight right toward CO 95 South: Sheridan Boulevard

    1708 ft · 37 sec

  12. 12

    Turn right onto Sheridan Boulevard

    4.3 mi · 7 min · Sheridan Boulevard

  13. 13

    Take the ramp slight right toward I 76 West

    1712 ft · 44 sec

  14. 14

    Merge slight left onto Heartland Expressway

    1.3 mi · 2 min · Heartland Expressway

  15. 15

    Merge slight left

    164.2 mi · 3 hr 7 min

  16. 16

    Take the exit slight right toward New Castle

    1387 ft · 38 sec

  17. 17

    Turn right onto Castle Valley Boulevard

    553 ft · 9 sec · Castle Valley Boulevard

  18. 18

    Enter the roundabout and take exit 3 toward Grand Army of the Republic Highway

    77 m · 5 sec · Grand Army of the Republic Highway

  19. 19

    Exit the roundabout onto Grand Army of the Republic Highway

    2769 ft · 53 sec · Grand Army of the Republic Highway

  20. 20

    Continue on East Main Street

    3200 ft · 1 min · East Main Street

  21. 21

    Turn right onto North 6th Street

    144 m · 21 sec · North 6th Street

  22. 22

    Arrive at your destination

    0 m · 1 sec · North 6th Street

Car Route Details

A richer read on the saved driving route between Broomfield and New Castle.

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
22 steps
13 turns on the saved route
Ramps & Exits
8
3 merges, 5 ramps or exits
Navigation Density
12.4 / 100 mi
Decision points by distance
Main Roads
Heartland Expressway
166 mi · 94%
Sheridan Boulevard
4.31 mi · 2%
Denver–Boulder Turnpike
3.87 mi · 2%
East Main Street
0.61 mi
Grand Army of the Republic Highway
0.57 mi
US 36 East
0.33 mi
Longest Stretch

Heartland Expressway

Merge slight left

164 mi · 03h 07m

Route Summary

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

Trip Read

A longer out-and-back drive

This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.

Drive Time
03h 28m
Long day trip
Same-Day Return
06h 58m
Round-trip wheel time
Road vs Air
+44.9 mi
132.4 mi direct line
Halfway Stop
Frisco
01h 44m from Broomfield
Leave By
10:02 AM MDT
Early departure recommended
Weather Watch

Slight Chance Snow Showers leaving Broomfield and Mostly Sunny near New Castle.

Trip Questions

Direct answers travelers usually want before committing to the drive.

How long does it take to drive from Broomfield to New Castle?

The road trip is about 177.3 miles (285.4 km) and usually takes 03h 28m in normal driving conditions.

Is this a same-day trip or an overnight route?

This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.

What is the halfway point on this route?

Frisco is a useful midpoint, sitting about 88.5 miles from Broomfield and 88.8 miles from New Castle.

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

The direct path is about 132.4 miles (213 km), while the road route adds roughly 44.9 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 8:00 AM MDT. If you want a more comfortable same-day return, try to leave by 10:02 AM MDT.

How much will gas cost for this route?

Using about 28.3 MPG, regular gas is estimated at $23.15 one way or $46.30 round trip. Estimated CO2 is about 55.6 kg one way.

What should you check before leaving?

Before you leave, expect Slight Chance Snow Showers around Broomfield and Mostly Sunny near New Castle.

Stop Ideas Near Frisco

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

Mid-route Guidance
Local place coverage is thin around Frisco, so nearby transit and meeting points are shown instead.
Reviewed stop coverage is still thin around this midpoint, so practical transit waypoints are shown on the right.

Transit and Meeting Points

Useful pickup, handoff, or rendezvous points close to Frisco.

BUS

Frisco, Colorado

1 mi away
1010 Meadow Drive
BUS

Vail, Colorado

22 mi away
241 South Frontage Road East
BUS

Fairplay, CO

40 mi away
620 US Highway 285
RAIL

Fraser – Winter Park

48 mi away
205 Fraser Avenue

Flight Path Map

This map shows the direct air route between Broomfield and New Castle. Straight-line distance: 132.34 mi (212.98 km).

Photo coming soon

#1 Broomfield

A city in Broomfield County, Colorado.

Population72,236
Coordinates39.9205400, -105.0866500
Altitude1644
CountryUnited States
New Castle

#2 New Castle

Colorado

Population4,962
Coordinates39.5727600, -107.5364400
Altitude1706
CountryUnited States
Start: Broomfield (-105.08665, 39.92054)
End: New Castle (-107.53644, 39.57276)

Estimated Travel Time

Distance: 285 km by road

SpeedTime
30 mph (48.3 km/h)05h 54m
40 mph (64.37 km/h)04h 26m
50 mph (80.47 km/h)03h 32m
60 mph (96.56 km/h)02h 57m
70 mph (112.65 km/h)02h 32m
80 mph (129 km/h)02h 12m

Fuel, Round Trip and CO2

Estimated fuel cost and emissions for this route.

One-way fuel
6.26 gal
23.69 L · about $23.15
Round trip
$46.30
12.52 gal · 47.38 L
Estimated CO2
55.6 kg one way
Round trip: 111.3 kg / 245 lb CO2, using regular gasoline.
Fuel$/galOne wayRound trip
Regular gas $3.70 $23.15 $46.30
Mid-grade $4.08 $25.57 $51.13
Premium $4.39 $27.49 $54.98
Diesel $4.74 $29.65 $59.31

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 18, 2026

There is no time difference between Broomfield and New Castle. The current time is 03:20:57.

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.