How far is Idaho Springs, CO from Thornton, CO?
The driving distance from Idaho Springs, CO to Thornton, CO is about 39.3 miles (63.2 km), with a travel time of about 00h 43m by car.
- The straight-line flight distance is about 30 miles (48.3 km).
- For a round trip, plan for roughly 01h 27m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 7:00 AM to 7:00 PM MDT.
Reverse, save, or send this route
This is an easy same-day return drive. Copy the route link, send it to another device, or print a clean version before you head out.
This is an easy same-day return drive.
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 00h 43m.
This is a short drive, so your comfort window is wide. Traffic and current weather matter more than the clock.
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.
County seat of Jefferson County, Colorado, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Snow Showers
Rain And Snow Showers
Driving Route Map
The map below follows the saved road route between Idaho Springs and Thornton.
Turn-by-Turn Driving Directions
Step-by-step road directions between Idaho Springs and Thornton.
-
1
Start on Riverside Drive
1 m · 1 sec · Riverside Drive
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2
Turn right onto Colorado Boulevard
1.5 km · 2 min · Colorado Boulevard
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3
Enter the roundabout and take exit 2 toward Colorado Boulevard
41 m · 3 sec · Colorado Boulevard
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4
Exit the roundabout onto Colorado Boulevard
1418 ft · 36 sec · Colorado Boulevard
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5
Take the ramp straight toward I 70 east: Denver
27.6 mi · 33 min
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6
Keep slight left to continue on Heartland Expressway
5.1 mi · 6 min · Heartland Expressway
-
7
Take the exit slight right toward I 25: Fort Collins, Colorado Springs
1098 ft · 21 sec
-
8
Keep slight left to continue on I 25 North: Fort Collins
1.4 mi · 3 min
-
9
Merge slight left onto North Valley Highway
1.4 km · 1 min · North Valley Highway
-
10
Keep slight right to continue on North Valley Highway
1.3 mi · 2 min · North Valley Highway
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11
Take the exit slight right toward Thornton Parkway
2280 ft · 43 sec
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12
Turn right onto Thornton Parkway
1.4 km · 2 min · Thornton Parkway
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13
Turn right onto Dorothy Boulevard
1077 ft · 51 sec · Dorothy Boulevard
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14
Turn right
36 m · 9 sec
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15
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Idaho Springs and Thornton.
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 east
Take the ramp straight toward I 70 east: Denver
27.6 mi · 00h 33m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A short regional drive
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
Snow Showers leaving Idaho Springs and Rain And Snow Showers near Thornton.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Idaho Springs to Thornton?
The road trip is about 39.3 miles (63.2 km) and usually takes 00h 43m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
What is the halfway point on this route?
Golden is a useful midpoint, sitting about 19.6 miles from Idaho Springs and 19.7 miles from Thornton.
How much longer is the road route than the straight-line distance?
The direct path is about 30 miles (48.3 km), while the road route adds roughly 9.3 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 7:00 AM to 7:00 PM MDT. If you want a more comfortable same-day return, try to leave by 7:02 PM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $5.14 one way or $10.28 round trip. Estimated CO2 is about 12.4 kg one way.
What should you check before leaving?
Before you leave, expect Snow Showers around Idaho Springs and Rain And Snow Showers near Thornton.
Stop Ideas Near Golden
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Municipal Court Park
Denver City Council
Town Hall Arts Center
City of Littleton
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Golden.
Union Station
Denver (Bus Station), Colorado
Boulder, Colorado
Pine Junction, CO
Flight Path Map
This map shows the direct air route between Idaho Springs and Thornton. Straight-line distance: 30.03 mi (48.33 km).
#1 Idaho Springs
City in Clear Creek County, Colorado, United States
| Population | 1,857 |
| Coordinates | 39.7424900, -105.5136100 |
| Altitude | 2294 |
| Country | United States |
#2 Thornton
The seventh most populous city in Colorado.
| Population | 148,113 |
| Coordinates | 39.8680400, -104.9719200 |
| Altitude | 1631 |
| Country | United States |
End: (-104.971859, 39.868064)
Estimated Travel Time
Distance: 63 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 18m |
| 40 mph (64.37 km/h) | 00h 58m |
| 50 mph (80.47 km/h) | 00h 47m |
| 60 mph (96.56 km/h) | 00h 39m |
| 70 mph (112.65 km/h) | 00h 33m |
| 80 mph (129 km/h) | 00h 29m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.70 | $5.14 | $10.28 |
| Mid-grade | $4.08 | $5.68 | $11.35 |
| Premium | $4.39 | $6.10 | $12.21 |
| Diesel | $4.74 | $6.58 | $13.17 |
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
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.