Origin
Idaho Springs, CO
Late night in Idaho Springs on Tuesday
Local time
2:50 AM
MDT
Current temp
30°F
Unavailable
Live forecast
Trip from Idaho Springs, CO to Thornton, CO
Pin this tripCompiled and reviewed by the US Trip Planner planning team at COD Solutions Oy · Last reviewed Apr 21, 2026 · Editorial standards
Drive Time
51m
Distance
39.3 mi
63 km
Drive Score
6/10
Good drive
Same Day?
Yes, doable
Fuel Cost
$6
one way
EV Charging
Unknown
Best Time to Leave
4 AM
0h 47m
★
6 AM
0h 52m
8 AM
1h 0m
10 AM
0h 55m
12 PM
0h 54m
3 PM
0h 55m
5 PM
1h 0m
8 PM
0h 49m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Idaho Springs, CO
Chris F
Thornton, CO
Wikimedia Commons
Trip Overview
Traveling from Idaho Springs to Thornton covers a manageable 39.3 miles, making this a perfect candidate for a single-day trip. You can expect to reach your destination in approximately 51 minutes depending on traffic conditions. With a fuel budget of just $6, this is an incredibly cost-effective excursion through the Mountain West. Because the duration is under an hour, you won't need to plan for overnight stays or complex logistics. The route relies heavily on major thoroughfares, ensuring a straightforward and efficient transition between the two Colorado cities.
Main Roads
| Road | Distance | Duration |
|---|---|---|
| I 70 Business | 27.6 mi | 32m |
| Heartland Expressway | 5.1 mi | 5m |
| North Valley Highway | 2.2 mi | 2m |
| Colorado Boulevard | 1.2 mi | 3m |
| Thornton Parkway | 0.9 mi | 1m |
| Dorothy Boulevard | 0.2 mi | <1m |
| Riverside Drive | <0.1 mi | — |
Some road-level metrics are being recalculated.
Longest stretch:
I 70 Business
— 27.6 mi, about 32m
Turn-by-Turn Driving Directions
Step-by-step road directions between Idaho Springs, CO and Thornton, CO.
1
Start on Riverside Drive
3 ft
·
0 sec
·
Riverside Drive
2
Turn right onto I 70 Business
0.9 mi
·
2 min
·
Colorado Boulevard
3
Enter roundabout onto I 70 Business
134 ft
·
2 sec
·
Colorado Boulevard
4
Continue on I 70 Business
0.3 mi
·
36 sec
·
Colorado Boulevard
5
Take the ramp onto I 70 Business
28 mi
·
32 min
·
I 70 Business
Toward I 70 east: Denver
Use the straight / slight right lanes.
6
Keep slight left at fork onto I 76
5.1 mi
·
5 min
·
Heartland Expressway
Exit 269B
Toward I 76 East: Fort Morgan
Use the left lane.
7
Take the exit
0.2 mi
·
20 sec
Exit 5
Toward I 25: Fort Collins, Colorado Springs
Use the slight right lane.
8
Keep slight left at fork
1.4 mi
·
2 min
Toward I 25 North: Fort Collins
Use the slight left / slight right lanes.
9
Merge onto I 25
0.9 mi
·
1 min
·
North Valley Highway
10
Keep slight right at fork onto I 25
1.3 mi
·
1 min
·
North Valley Highway
Use the slight right lane.
11
Take the exit
0.4 mi
·
43 sec
Exit 220
Toward Thornton Parkway
Use the slight right lane.
12
Turn right onto Thornton Parkway
0.9 mi
·
1 min
·
Thornton Parkway
Use the left / straight / right lanes.
13
Turn right onto Dorothy Boulevard
0.2 mi
·
51 sec
·
Dorothy Boulevard
Use the right lane.
14
Turn right
116 ft
·
8 sec
15
Arrive at destination
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Mid-route town
Meal stop
20 mi into the route
Best for: Lunch, fuel, and a longer reset
This sits close to the middle of the route, so it works well for the longest stop of the day.
Pacing Suggestions
Fuel and coffee
A short stop after about 39 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 19.6 miles from Idaho Springs, CO, which is a good place for a longer meal and fuel stop.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Heads-up: tricky spots
5 of 125 decision points cluster between mile 28.8 and 37.7 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
8
28.8 mi into trip
|
~36m in
|
I 76 / Heartland Expressway
Keep slight left at fork onto I 76 / Heartland Expressway toward I 76 East: Fort Morgan
Highway fork - watch signs carefully. Lane positioning matters here
Use the left lane.
Exit 269B
Toward I 76 East: Fort Morgan
8
33.9 mi into trip
|
~41m in
Take the exit toward I 25: Fort Collins, Colorado Springs
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Exit 5
Toward I 25: Fort Collins, Colorado Springs
7
34.1 mi into trip
|
~42m in
Keep slight left at fork toward I 25 North: Fort Collins
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight left / slight right lanes.
Toward I 25 North: Fort Collins
6
36.4 mi into trip
|
~46m in
|
I 25 / North Valley Highway
Keep slight right at fork onto I 25 / North Valley Highway
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight right lane.
7
37.7 mi into trip
|
~47m in
Take the exit toward Thornton Parkway
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the slight right lane.
Exit 220
Toward Thornton Parkway
Fuel & Cost
Regular Gas
$5.92 one way
$11.84 round trip
$3.83/gal
25.4 MPG avg
14 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.05 | $6.27 | $12.54 |
| premium | $4.39 | $6.80 | $13.60 |
| diesel | $5.61 | $8.68 | $17.35 |
No toll roads detected on this route.
Drive Cost (one way)
Fuel
$6
Estimated CO2 emission: 13.8 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $4 in charging · 0 stops · 64% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 11.8 | 0 | $4.13 | $1.89 |
| Efficient EV | 9.8 | 0 | $3.44 | $1.57 |
| EV Truck/SUV | 15.7 | 0 | $5.50 | $2.52 |
Gas CO2
14 kg
EV CO2
5 kg (64% less)
This trip is well within single-charge range for most EVs. No charging stops needed if you start fully charged.
DC fast charging avg $0.35/kWh. Home charging avg $0.16/kWh. US grid CO2: 0.39 kg/kWh.
Travel Intel
Current conditions at both ends of the drive.
Destination
Thornton, CO
Late night in Thornton on Tuesday
Local time
2:50 AM
MDT
Current temp
36°F
Unavailable
Live forecast
Time zone
Same local time
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
6 degrees warmer at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
51m on the road
Use the two city cards together: check the sky where you start, then compare it with the local time and temperature at arrival.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
What kind of drive is this?
This highway-focused drive is defined by its efficiency, with 85% of the trip spent on high-speed roads. You will spend the bulk of your time on I-70 Business, which accounts for the longest uninterrupted stretch of 27.6 miles. As you move away from Idaho Springs, the route transitions through the Heartland Expressway and North Valley Highway to connect you to Thornton. Expect a consistent, fast-paced experience rather than a winding backroad journey. Behind the wheel, you will find the road feel remains steady and predictable for the entirety of the 51-minute transit.
85% highway — fuel and pacing are the main things to plan.
15 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 27.6 mi on I 70 Business.
How Hard Is This Drive?
9/10
This is a straightforward highway drive that stays mostly on I 70 Business and Heartland Expressway. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 28.8 miles in near I 76 / Heartland Expressway.
Driving Effort
9/10
Focused - lots of decisions in a short distance, but it is over quickly
Balances navigation complexity with total wheel time.
This is a short but busy drive. With 12 decision points packed into just 39.3 miles, you will need to pay attention to lane changes and exits — but the whole thing is over in 51m.
Where does it get tricky?
The main spots that need attention: at 28.8 miles (I 76 / Heartland Expressway): Highway fork - watch signs carefully. Lane positioning matters here; at 33.9 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 34.1 miles: Highway fork - watch signs carefully. Lane positioning matters here.
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
On the drive from Idaho Springs, CO to Thornton, CO, road signs begin pointing toward Colorado Springs along the way.
Colorado Springs
33.9 mi in
|
~41m
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 51m. Total distance: 39.3 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
51m drive, comfortable solo distance.
EV Driver
0 DC fast chargers along the route. Coverage: unknown.
First-Time Driver
Mostly highway driving (85%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 27.6 miles on I 70 Business. The full list of main roads is in the Roads section above.
It helps. This route has a higher-than-average number of complex decision points, which get harder in the dark. If the last hour of the trip is on surface roads or mountain grades, aim to arrive at Thornton, CO before sunset when you can. Check the Trip Plan for departure windows that land you in daylight.
Yes. At under 2 hours behind the wheel, this works well for families — plan one quick stop if you have younger kids.
The main spots that need attention: at 28.8 miles (I 76 / Heartland Expressway): Highway fork - watch signs carefully. Lane positioning matters here; at 33.9 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 34.1 miles: Highway fork - watch signs carefully. Lane positioning matters here.
Yes. A round trip is manageable in a single day if you plan a break at Thornton, CO before heading back.
How this page is built
Compiled by the US Trip Planner planning team at COD Solutions Oy from open government datasets — OSRM over OpenStreetMap for geometry, and EIA for fuel prices. See our methodology for refresh cadence and limitations.
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