How far is Thornton, CO from Idaho Springs, CO?
The driving distance from Thornton, CO to Idaho Springs, CO is about 39.9 miles (64.2 km), with a travel time of about 00h 52m by car.
- The straight-line flight distance is about 30 miles (48.3 km).
- For a round trip, plan for roughly 01h 44m 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 00h 52m.
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.
Municipality in Colorado, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Rain And Snow Showers
Snow Showers
Driving Route Map
The map below follows the saved road route between Thornton and Idaho Springs.
Turn-by-Turn Driving Directions
Step-by-step road directions between Thornton and Idaho Springs.
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1
Start on the route
23 m · 12 sec
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2
Turn left onto Dorothy Boulevard
1165 ft · 59 sec · Dorothy Boulevard
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3
At the end of the road, turn left onto Thornton Parkway
1.6 km · 2 min · Thornton Parkway
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4
Turn left onto I 25 South: Colorado Springs
1973 ft · 40 sec
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5
Merge slight left onto North Valley Highway
1.2 mi · 2 min · North Valley Highway
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6
Keep slight right to continue on North Valley Highway
1.5 mi · 2 min · North Valley Highway
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7
Take the exit slight right toward I 76 West: Arvada, Grand Junction
1.5 km · 2 min
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8
Merge slight left onto Heartland Expressway
5.2 mi · 6 min · Heartland Expressway
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9
Merge slight left
29.1 mi · 35 min
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10
Take the exit slight right toward CO 103: Mount Evans
822 ft · 26 sec
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11
Turn right onto 13th Avenue
46 m · 3 sec · 13th Avenue
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12
Turn right onto Miner Street
1586 ft · 49 sec · Miner Street
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13
Turn left onto Riverside Drive
60 m · 11 sec · Riverside Drive
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14
Arrive at your destination
0 m · 1 sec · Riverside Drive
Car Route Details
A richer read on the saved driving route between Thornton and Idaho Springs.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Heartland Expressway
Merge slight left
29.1 mi · 00h 35m
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.
Rain And Snow Showers leaving Thornton and Snow Showers near Idaho Springs.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Thornton to Idaho Springs?
The road trip is about 39.9 miles (64.2 km) and usually takes 00h 52m 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?
Morrison is a useful midpoint, sitting about 19.9 miles from Thornton and 19.9 miles from Idaho Springs.
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 9.9 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 8:00 AM to 10:00 AM MDT. If you want a more comfortable same-day return, try to leave by 4:46 PM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $5.21 one way or $10.43 round trip. Estimated CO2 is about 12.5 kg one way.
What should you check before leaving?
Before you leave, expect Rain And Snow Showers around Thornton and Snow Showers near Idaho Springs.
Stop Ideas Near Morrison
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 Morrison.
Denver (Bus Station), Colorado
Union Station
Pine Junction, CO
Boulder, Colorado
Flight Path Map
This map shows the direct air route between Thornton and Idaho Springs. Straight-line distance: 30.03 mi (48.33 km).
#1 Thornton
The seventh most populous city in Colorado.
| Population | 148,113 |
| Coordinates | 39.8680400, -104.9719200 |
| Altitude | 1631 |
| Country | United States |
#2 Idaho Springs
City in Clear Creek County, Colorado, United States
| Population | 1,857 |
| Coordinates | 39.7424900, -105.5136100 |
| Altitude | 2294 |
| Country | United States |
End: Idaho Springs (-105.51361, 39.74249)
Estimated Travel Time
Distance: 64 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 19m |
| 40 mph (64.37 km/h) | 00h 59m |
| 50 mph (80.47 km/h) | 00h 47m |
| 60 mph (96.56 km/h) | 00h 39m |
| 70 mph (112.65 km/h) | 00h 34m |
| 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 | $5.21 | $10.43 |
| Mid-grade | $4.08 | $5.76 | $11.52 |
| Premium | $4.39 | $6.19 | $12.38 |
| Diesel | $4.74 | $6.68 | $13.36 |
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.