How far is Castle Rock, CO from Greeley, CO?
The driving distance from Castle Rock, CO to Greeley, CO is about 91 miles (146.5 km), with a travel time of about 01h 34m by car.
- The straight-line flight distance is about 73 miles (117.5 km).
- For a round trip, plan for roughly 03h 08m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM MDT.
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.
This route works well as a day trip with time at the destination.
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 01h 34m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
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.
A city in Adams County, Colorado.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Sunny then Slight Chance Rain Showers
Mostly Sunny then Slight Chance Rain Showers
Driving Route Map
The map below follows the saved road route between Castle Rock and Greeley.
Turn-by-Turn Driving Directions
Step-by-step road directions between Castle Rock and Greeley.
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1
Start on North Cantril Street
27 m · 8 sec · North Cantril Street
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2
Turn left onto 3rd Street
641 ft · 23 sec · 3rd Street
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3
Exit the roundabout onto 3rd Street
135 m · 18 sec · 3rd Street
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4
Turn right onto North Wilcox Street
2807 ft · 2 min · North Wilcox Street
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5
Take the ramp straight toward I 25 North
1715 ft · 42 sec
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6
Merge slight left
11.7 mi · 12 min
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7
Take the exit slight right toward CO 470 West, E 470 North Toll: Grand Junction, Limon
865 ft · 21 sec
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8
Keep slight right to continue on E-470 North: Limon
2718 ft · 1 min
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9
Merge slight left onto E-470
34.4 mi · 34 min · E-470
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10
Take the exit slight right toward I 76 East: Fort Morgan
1.1 mi · 2 min
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11
Merge slight left onto Heartland Expressway
15.4 mi · 15 min · Heartland Expressway
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12
Take the exit slight right toward Kersey Road
1014 ft · 22 sec
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13
Turn left onto County Road 49
22 mi · 26 min · County Road 49
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14
Turn left onto East 18th Street
3.7 mi · 6 min · East 18th Street
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15
At the end of the road, turn right onto 8th Avenue
1.4 km · 2 min · 8th Avenue
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16
Turn left onto 10th Street
1022 ft · 29 sec · 10th Street
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17
Turn right onto 10th Avenue
153 m · 17 sec · 10th Avenue
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18
Turn left onto 9th Street
1.2 km · 1 min · 9th Street
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19
Turn left onto 19th Avenue
80 m · 12 sec · 19th Avenue
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20
Arrive at your destination
0 m · 1 sec · 19th Avenue
Car Route Details
A richer read on the saved driving route between Castle Rock and Greeley.
Interchange-aware route
The drive includes several ramps, exits, or merges, so checking the next few maneuvers before busy interchanges is useful.
E-470
Merge slight left onto E-470
34.4 mi · 00h 34m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
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.
Sunny then Slight Chance Rain Showers leaving Castle Rock and Mostly Sunny then Slight Chance Rain Showers near Greeley.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Castle Rock to Greeley?
The road trip is about 91 miles (146.5 km) and usually takes 01h 34m 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?
Brighton is a useful midpoint, sitting about 46.1 miles from Castle Rock and 44.9 miles from Greeley.
How much longer is the road route than the straight-line distance?
The direct path is about 73 miles (117.5 km), while the road route adds roughly 18 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 3:22 PM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $11.87 one way or $23.74 round trip. Estimated CO2 is about 28.5 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 then Slight Chance Rain Showers near Greeley.
Stop Ideas Near Brighton
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Fairplay Park
Aurora Municipal Center
Town Hall
Municipal Court Park
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Brighton.
Denver (Bus Station), Colorado
Union Station
Longmont, Colorado
Boulder, Colorado
Flight Path Map
This map shows the direct air route between Castle Rock and Greeley. Straight-line distance: 73.04 mi (117.55 km).
#1 Castle Rock
The most populous city in Douglas County, Colorado.
| Population | 70,567 |
| Coordinates | 39.3722100, -104.8560900 |
| Altitude | 1897 |
| Country | United States |
#2 Greeley
The third most populous city in Weld County, Colorado.
| Population | 108,958 |
| Coordinates | 40.4233100, -104.7091300 |
| Altitude | 1425 |
| Country | United States |
End: 19th Avenue (-104.709131, 40.42331)
Estimated Travel Time
Distance: 146 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 03h 01m |
| 40 mph (64.37 km/h) | 02h 16m |
| 50 mph (80.47 km/h) | 01h 49m |
| 60 mph (96.56 km/h) | 01h 31m |
| 70 mph (112.65 km/h) | 01h 18m |
| 80 mph (129 km/h) | 01h 08m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.70 | $11.87 | $23.74 |
| Mid-grade | $4.08 | $13.11 | $26.22 |
| Premium | $4.39 | $14.10 | $28.19 |
| Diesel | $4.74 | $15.21 | $30.41 |
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
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.