Origin
Casper, WY
Late night in Casper on Friday
Local time
1:48 AM
MDT
Current temp
44°F
Unavailable
Live forecast
Trip from Casper, WY to Glenrock, WY
Compiled by the Trip.ovh editorial team · Last recalculated Apr 17, 2026 · Methodology
Drive Time
31m
Distance
25.2 mi
41 km
Drive Score
7/10
Good drive
Same Day?
Yes, doable
Fuel Cost
$4
one way
EV Charging
Unknown
Best Time to Leave
4 AM
0h 29m
★
6 AM
0h 31m
8 AM
0h 37m
10 AM
0h 33m
12 PM
0h 33m
3 PM
0h 34m
5 PM
0h 37m
8 PM
0h 30m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Casper, WY
Taryn Elliott
Glenrock, WY
Wikimedia Commons
Trip Overview
The drive from Casper, WY to Glenrock, WY covers 25.2 miles and takes about 31m behind the wheel. This route is realistic as a one-day drive if you keep your stops efficient.
The route leans on I 25, Deer Creek Road, Bryan Stock Trail for much of the mileage, and the overall profile is highway-focused drive. The longest uninterrupted segment is about 20.2 miles on I 25. At current regular gas prices, budget about $3.99 one way before food or hotel costs.
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 31m. Total distance: 25.2 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
31m drive, comfortable solo distance.
EV Driver
0 DC fast chargers along the route. Coverage: unknown.
First-Time Driver
Mostly highway driving (80%). Straightforward navigation.
Drive Character
This is a 31m highway drive covering 25.2 miles, with most of the trip on I 25 and Deer Creek Road. The longest continuous stretch is about 20.2 miles on I 25.
Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.
There are about 13 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
I 25 is the longest continuous segment at about 20.2 miles.
How Hard Is This Drive?
This is a straightforward highway drive that stays mostly on I 25 and Deer Creek Road. There are only a few real navigation decisions along the way. The trickiest moment comes around 0.3 miles in.
Driving Effort
4/10
Easy - simple navigation with a manageable amount of wheel time
Balances navigation complexity with total wheel time.
This is a straightforward 31m drive. You will face about 8 decision points, but nothing that requires special attention if you follow navigation.
Where does it get tricky?
The main spots that need attention: at 0.3 miles: Navigation decision point; at 0.9 miles (Bryan Stock Trail): Navigation decision point; at 2.2 miles (I 25 BUS; US 20; US 26; US 87 / East Yellowstone Highway): Navigation decision point.
Critical Maneuvers
5 of 8 key pointsThese are the spots where you need to pay the most attention. Preview them before you drive.
5
0.3 mi into trip
|
~1m in
Turn right
Navigation decision point
5
0.9 mi into trip
|
~3m in
|
Bryan Stock Trail
At end of road, turn right onto Bryan Stock Trail
Navigation decision point
5
2.2 mi into trip
|
~6m in
|
I 25 BUS; US 20; US 26; US 87 / East Yellowstone Highway
Turn left onto I 25 BUS; US 20; US 26; US 87 / East Yellowstone Highway
Navigation decision point
4
2.5 mi into trip
|
~6m in
Take the ramp toward I 25 South: Douglas
Navigation decision point
Toward I 25 South: Douglas
5
22.7 mi into trip
|
~27m in
|
I 25
Take the exit onto I 25 toward I 25 Business: Glenrock, Rolling Hills
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Toward I 25 Business: Glenrock, Rolling Hills
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 Casper, WY to Glenrock, WY, road signs begin pointing toward Rolling Hills along the way.
Rolling Hills
22.7 mi in
|
~27m
|
via I 25
Main Roads
| Road | Distance | Duration |
|---|---|---|
| I 25 | 20.2 mi | 21m |
| Deer Creek Road | 1.6 mi | 2m |
| Bryan Stock Trail | 1.1 mi | 1m |
| South 4th Street | 0.6 mi | <1m |
| East Sunlight Drive | 0.5 mi | 1m |
| East Yellowstone Highway | 0.3 mi | <1m |
| North Sunlight Drive | 0.3 mi | 1m |
| North Beverly Street | 0.2 mi | <1m |
Longest stretch:
I 25
— 20.2 mi, about 21m
Turn-by-Turn Driving Directions
Step-by-step road directions between Casper, WY and Glenrock, WY.
1
Start on North Sunlight Drive
0.3 mi
·
1 min
·
North Sunlight Drive
2
Turn right
0.1 mi
·
33 sec
3
Turn right onto East Sunlight Drive
0.5 mi
·
1 min
·
East Sunlight Drive
4
At end of road, turn right onto Bryan Stock Trail
1.1 mi
·
1 min
·
Bryan Stock Trail
5
Continue on I 25 Business
0.2 mi
·
29 sec
·
North Beverly Street
6
Turn left onto I 25 BUS; US 20; US 26; US 87
0.3 mi
·
25 sec
·
East Yellowstone Highway
7
Take the ramp
0.3 mi
·
37 sec
Toward I 25 South: Douglas
8
Merge onto I 25
20 mi
·
20 min
·
I 25
9
Take the exit onto I 25
0.4 mi
·
47 sec
·
I 25
Toward I 25 Business: Glenrock, Rolling Hills
10
Turn left onto I 25 Business; WY 95
1.6 mi
·
2 min
·
Deer Creek Road
11
Continue on I 25 Business; WY 95
0.6 mi
·
56 sec
·
South 4th Street
12
Turn left onto US 20; US 26; US 87
23 ft
·
0 sec
·
West Birch Street
13
Arrive at destination
US 20; US 26; US 87
Fuel & Cost
Regular Gas
$3.99 one way
$7.99 round trip
$4.03/gal
25.4 MPG avg
9 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.22 | $4.19 | $8.37 |
| premium | $4.53 | $4.50 | $8.99 |
| diesel | $5.61 | $5.56 | $11.13 |
No toll roads detected on this route.
Drive Cost (one way)
Fuel
$4
Estimated CO2 emission: 8.8 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $3 in charging · 0 stops · 67% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 7.6 | 0 | $2.65 | $1.21 |
| Efficient EV | 6.3 | 0 | $2.20 | $1.01 |
| EV Truck/SUV | 10.1 | 0 | $3.53 | $1.61 |
Gas CO2
9 kg
EV CO2
3 kg (67% 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
Glenrock, WY
Late night in Glenrock on Friday
Local time
1:48 AM
MDT
Current temp
74°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
30 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
31m 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.
Frequently Asked Questions
The drive from Casper, WY to Glenrock, WY covers 25.2 miles and takes about 31m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are I 25, Deer Creek Road, Bryan Stock Trail. Most of the drive stays on highways, so watch for ramps and exits.
This is a comfortable same-day trip.
The midpoint is about 12.6 miles from Casper, WY. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $3.99 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
Leave by 9 AM and you'll arrive before lunch. Even a 4 PM departure gets you there before dark in summer.
This is a straightforward 31m drive. You will face about 8 decision points, but nothing that requires special attention if you follow navigation.
The main spots that need attention: at 0.3 miles: Navigation decision point; at 0.9 miles (Bryan Stock Trail): Navigation decision point; at 2.2 miles (I 25 BUS; US 20; US 26; US 87 / East Yellowstone Highway): Navigation decision point.
On the drive from Casper, WY to Glenrock, WY, road signs begin pointing toward Rolling Hills along the way.
Data sources
The figures on this page are computed from open government and mapping datasets, not crowdsourced reviews. Distances and geometry come from OSRM over OpenStreetMap. Fuel cost uses EIA weekly regional averages. Full methodology, refresh cadence, and limitations are documented on the methodology page.
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