How far is Boulder, CO from Avon, CO?
The driving distance from Boulder, CO to Avon, CO is about 117.7 miles (189.4 km), with a travel time of about 02h 29m by car.
- The straight-line flight distance is about 71.5 miles (115.1 km).
- For a round trip, plan for roughly 04h 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.
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 02h 29m.
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.
Human settlement in Clear Creek County, Colorado, United States of America
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Boulder and Avon.
Turn-by-Turn Driving Directions
Step-by-step road directions between Boulder and Avon.
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1
Start on the route
27 m · 7 sec
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2
Turn right onto 19th Street
44 m · 14 sec · 19th Street
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3
Turn left onto Arapahoe Avenue
3210 ft · 2 min · Arapahoe Avenue
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4
Turn right onto 28th Street
1.2 km · 2 min · 28th Street
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5
Turn straight onto Baseline Road
865 ft · 18 sec
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6
Keep slight left to continue on Baseline Road, Broadway South
116 m · 16 sec
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7
Continue on 27th Way
1484 ft · 46 sec · 27th Way
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8
At the end of the road, turn left onto Broadway
2.2 mi · 4 min · Broadway
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9
Continue on South Foothills Highway
8.3 mi · 12 min · South Foothills Highway
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10
Continue straight
7.5 mi · 11 min
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11
Continue on Dinosaur Diamond Prehistoric Highway
2.9 mi · 5 min · Dinosaur Diamond Prehistoric Highway
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12
Turn right
2993 ft · 54 sec
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13
Take the exit slight right toward I 70 West: Grand Junction
1.3 km · 59 sec
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14
Merge slight left
92.7 mi · 1 hr 49 min
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15
Take the exit slight right toward Avon
921 ft · 22 sec
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16
Keep slight left to continue on Avon
74 m · 6 sec
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17
Enter the roundabout and take exit 3 toward Avon Road
676 ft · 14 sec · Avon Road
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18
Exit the roundabout onto Avon Road
156 m · 10 sec · Avon Road
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19
Enter the roundabout and take exit 2 toward Avon Road
47 m · 3 sec · Avon Road
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20
Exit the roundabout onto Avon Road
85 m · 6 sec · Avon Road
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21
Enter the roundabout and take exit 2 toward Avon Road
32 m · 2 sec · Avon Road
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22
Exit the roundabout onto Avon Road
1059 ft · 21 sec · Avon Road
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23
Enter the roundabout and take exit 4 toward Avon Road
90 m · 5 sec · Avon Road
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24
Exit the roundabout onto Avon Road
23 m · 1 sec · Avon Road
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25
Arrive at your destination
0 m · 1 sec · Avon Road
Car Route Details
A richer read on the saved driving route between Boulder and Avon.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
I 70 West
Merge slight left
92.7 mi · 01h 49m
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.
Mostly Sunny leaving Boulder and Mostly Sunny near Avon.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Boulder to Avon?
The road trip is about 117.7 miles (189.4 km) and usually takes 02h 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?
Silver Plume is a useful midpoint, sitting about 58.8 miles from Boulder and 58.9 miles from Avon.
How much longer is the road route than the straight-line distance?
The direct path is about 71.5 miles (115.1 km), while the road route adds roughly 46.2 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 1:32 PM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $15.35 one way or $30.69 round trip. Estimated CO2 is about 36.9 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Boulder and Mostly Sunny near Avon.
Stop Ideas Near Silver Plume
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Silver Plume.
Fraser – Winter Park
Frisco, Colorado
Pine Junction, CO
Granby
Flight Path Map
This map shows the direct air route between Boulder and Avon. Straight-line distance: 71.51 mi (115.09 km).
#1 Boulder
The most populous city in Boulder County, Colorado.
| Population | 107,645 |
| Coordinates | 40.0149900, -105.2705500 |
| Altitude | 1624 |
| Country | United States |
#2 Avon
Home Rule Municipality that is a town in Eagle County, Colorado, United States
| Population | 6,952 |
| Coordinates | 39.6313700, -106.5222500 |
| Altitude | 2265 |
| Country | United States |
End: Avon (-106.52225, 39.63137)
Estimated Travel Time
Distance: 189 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 03h 55m |
| 40 mph (64.37 km/h) | 02h 56m |
| 50 mph (80.47 km/h) | 02h 21m |
| 60 mph (96.56 km/h) | 01h 57m |
| 70 mph (112.65 km/h) | 01h 40m |
| 80 mph (129 km/h) | 01h 28m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.70 | $15.35 | $30.69 |
| Mid-grade | $4.08 | $16.95 | $33.90 |
| Premium | $4.39 | $18.22 | $36.45 |
| Diesel | $4.74 | $19.66 | $39.32 |
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 17, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.