Origin
Thornton, CO
Late night in Thornton on Wednesday
Local time
12:17 AM
MDT
Current temp
46°F
Unavailable
Live forecast
Trip from Thornton, CO to Alamosa, CO
Data updated 0 seconds ago
Drive Time
4h 37m
Distance
243.5 mi
392 km
Drive Score
8/10
Great drive
Same Day?
Yes, doable
Fuel Cost
$37
one way
EV Charging
Loading...
station data
Best Time to Leave
4 AM
4h 25m
★
6 AM
4h 38m
8 AM
5h 5m
10 AM
4h 47m
12 PM
4h 45m
3 PM
4h 49m
5 PM
5h 3m
8 PM
4h 30m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Thornton, CO
Wikimedia Commons
Alamosa, CO
RDNE Stock project
Trip Overview
The drive from Thornton, CO to Alamosa, CO covers 243.5 miles and takes about 4h 37m behind the wheel. This route is realistic as a one-day drive if you keep your stops efficient.
The route leans on Dorothy Boulevard, Thornton Parkway, I 25 South for much of the mileage, and the overall profile is turn-heavy local drive. At current regular gas prices, budget about $36.69 one way before food or hotel costs.
Trip Pace
Same-day drive is realistic
A same-day return is possible, but it will make for a full day on the road.
Break Rhythm
1 planned break
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
121.7 miles from Thornton, CO
A natural place for your longest stop of the day , about 2h 19m into the drive .
Loading map...
Drive Character
Expect a 4h 37m drive with frequent turns across 243.5 miles of local and secondary roads.
This route has more turning and local-road decision points than a simple highway run.
There are about 24 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
Dorothy Boulevard is one of the defining roads on this drive.
How Hard Is This Drive?
Expect a hands-on drive with frequent turns and local roads rather than long highway stretches. There are only a few real navigation decisions along the way.
Route Complexity
3/10
Easy - simple navigation with a manageable amount of wheel time
This is a straightforward 4h 37m drive. You will face about 0 decision points, but nothing that requires special attention if you follow navigation.
Where does it get tricky?
This route does not have any notably tricky sections. Most of the drive from Thornton, CO to Alamosa, CO is straightforward, with well-signed roads and simple exits.
Main Roads
| Road | Distance | Duration |
|---|---|---|
| Dorothy Boulevard | Unavailable | Refreshing |
| Thornton Parkway | Unavailable | Refreshing |
| I 25 South | Unavailable | Refreshing |
| North Valley Highway | Unavailable | Refreshing |
| Monument Valley Freeway | Unavailable | Refreshing |
| Ronald Reagan Highway | Unavailable | Refreshing |
| John F | Unavailable | Refreshing |
| North Freeway | Unavailable | Refreshing |
Per-road distance and duration are being refreshed from OSRM for this route.
Longest stretch:
Dorothy Boulevard
— detailed segment metrics are refreshing.
Turn-by-Turn Driving Directions
Step-by-step road directions between Thornton, CO and Alamosa, CO.
1
Start on the route
75 ft
·
12 sec
·
the route
2
Turn left onto Dorothy Boulevard
0.2 mi
·
59 sec
·
Dorothy Boulevard
3
At the end of the road, turn left onto Thornton Parkway
1.0 mi
·
2 min
·
Thornton Parkway
4
Turn left onto I 25 South: Colorado Springs
0.4 mi
·
40 sec
·
I 25 South: Colorado Springs
5
Merge slight left onto North Valley Highway
1.2 mi
·
1 min
·
North Valley Highway
6
Keep slight right to continue on North Valley Highway
70 mi
·
1 hr 18 min
·
North Valley Highway
7
Continue on Monument Valley Freeway
8.8 mi
·
10 min
·
Monument Valley Freeway
8
Continue on Ronald Reagan Highway
0.2 mi
·
12 sec
·
Ronald Reagan Highway
9
Keep slight left to continue on Ronald Reagan Highway
23 mi
·
23 min
·
Ronald Reagan Highway
10
Continue on John F. Kennedy Memorial Highway
13 mi
·
12 min
·
John F. Kennedy Memorial Highway
11
Continue on North Freeway
2.6 mi
·
2 min
·
North Freeway
12
Take the exit slight right toward 29th Street
0.4 mi
·
33 sec
·
29th Street
13
Merge slight left onto North Freeway
1.0 mi
·
1 min
·
North Freeway
14
Take the exit slight right toward 13th Street
0.1 mi
·
12 sec
·
13th Street
15
Continue straight
0.2 mi
·
18 sec
16
Merge slight left onto North Freeway
6.1 mi
·
7 min
·
North Freeway
17
Continue on John F. Kennedy Memorial Highway
41 mi
·
40 min
·
John F. Kennedy Memorial Highway
18
Take the exit slight right toward South I 25 Business, US 160 West: Walsenburg, Alamosa
2.8 mi
·
4 min
·
South I 25 Business, US 160 West: Walsenburg, Alamosa
19
Turn right onto West 7th Street
71 mi
·
1 hr 27 min
·
West 7th Street
20
Continue on Broadway Avenue
0.3 mi
·
39 sec
·
Broadway Avenue
21
Continue on Denver Avenue
522 ft
·
18 sec
·
Denver Avenue
22
Turn right onto Fourth Street
0.4 mi
·
1 min
·
Fourth Street
23
Turn right onto Ross Avenue
66 ft
·
2 sec
·
Ross Avenue
24
Arrive at your destination
Trip Plan
Morning Departure
An early start around 7-8 AM gets you there with plenty of daylight left.
Evening Departure
A late afternoon start means arriving after dark. Morning is better.
You can normally do this drive in one day.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 121.7 miles from Thornton, CO, or about 2h 19m into the drive.
This is a comfortable same-day trip.
Departure
Before you leave
Start with fuel, water, and navigation already sorted so the first hour feels easy.
First stop
Around 80 miles or 1h 31m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 121.7 miles or 2h 19m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 3h 47m
Traffic, exits, and arrival timing usually matter more near Alamosa, CO than in the middle of the route.
Before You Leave
+
Open the route before leaving Thornton, CO so your first major turns are already loaded.
+
Leave with enough water and a charging cable within reach, not packed away.
+
Check your fuel range against the first long segment, especially if you are starting outside city service areas.
Day 1
Settle into the route from Thornton, CO
This is one driving day of about 243.5 miles and 4h 37m.
Your first comfortable stop window is around 80 miles from Thornton, CO.
This route can stay practical as a one-day drive if traffic stays reasonable.
Plan about 1 real break rather than only quick fuel stops.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 121.7 mi from Thornton, CO · 2h 19m into the drive
Mid-route town
Meal stop
122 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 80 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 121.7 miles from Thornton, CO, which is a good place for a longer meal and fuel stop.
Arriving in Alamosa, CO
The final approach into Alamosa, CO usually feels slower than the middle of the drive, so avoid planning your tightest schedule at the very end.
Try to arrive with enough fuel left to skip an immediate station stop unless you already know the area around Alamosa, CO.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Fuel & Cost
Regular Gas
$36.69 one way
$73.38 round trip
$3.83/gal
25.4 MPG avg
85 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.05 | $38.84 | $77.69 |
| premium | $4.39 | $42.12 | $84.25 |
| diesel | $5.61 | $53.76 | $107.52 |
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$37
Meals
$25–$50
Total
$62–$87
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 85.2 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $26 in charging · 0 stops · 67% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 73.1 | 0 | $25.57 | $11.69 |
| Efficient EV | 60.9 | 0 | $21.31 | $9.74 |
| EV Truck/SUV | 97.4 | 1 | $34.09 | $15.58 |
Gas CO2
85 kg
EV CO2
28 kg (67% less)
Plan for 0 charging stops, roughly every 270 miles. Allow 25-40 minutes per stop at a DC fast charger.
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
Alamosa, CO
Late night in Alamosa on Wednesday
Local time
12:17 AM
MDT
Current temp
66°F
Unavailable
Live forecast
Seasonal Notes
Summer travel usually means heavier construction, hotter rest stops, and busier weekend traffic around major cities.
Winter travel shortens daylight, so a route that looks manageable on paper can feel much longer after dark.
Holiday weekends tend to make both departure and arrival windows slower than the raw route time suggests.
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
20 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
4h 37m on the road
An early start around 7-8 AM gets you there with plenty of daylight left.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
Frequently Asked Questions
The drive from Thornton, CO to Alamosa, CO covers 243.5 miles and takes about 4h 37m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are Dorothy Boulevard, Thornton Parkway, I 25 South. Expect a mix of highway and local road driving.
This is a comfortable same-day trip.
The midpoint is about 121.7 miles from Thornton, CO. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $36.69 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
An early start around 7-8 AM gets you there with plenty of daylight left. A late afternoon start means arriving after dark. Morning is better.
Plan about 1 meaningful break for fuel, food, or rest. Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
This is a straightforward 4h 37m drive. You will face about 0 decision points, but nothing that requires special attention if you follow navigation.
This route does not have any notably tricky sections. Most of the drive from Thornton, CO to Alamosa, CO is straightforward, with well-signed roads and simple exits.
The route from Thornton, CO to Alamosa, CO does not surface many named destination signs beyond the main corridor.
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