Origin
Riverton, WY
Late night in Riverton on Sunday
Local time
4:02 AM
MDT
Current temp
75°F
Unavailable
Live forecast
Trip from Riverton, WY to Bar Nunn, WY
Compiled and reviewed by the US Trip Planner planning team at COD Solutions Oy · Last reviewed Apr 19, 2026 · Editorial standards
Drive Time
2h 21m
Distance
122.5 mi
197 km
Drive Score
10/10
Great drive
Same Day?
Yes, doable
Fuel Cost
$19
one way
EV Charging
Unknown
Best Time to Leave
4 AM
2h 12m
★
6 AM
2h 21m
8 AM
2h 41m
10 AM
2h 28m
12 PM
2h 26m
3 PM
2h 29m
5 PM
2h 40m
8 PM
2h 16m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Riverton, WY
Wikimedia Commons
Bar Nunn, WY
Valeria Boltneva
Trip Overview
Riverton, WY to Bar Nunn, WY is 122.5 miles and takes about 2h 21m via US 20 and I 25, with a fuel budget near $19 and enough daylight to finish in a day. This drive stays within the Mountain West region, specifically Wyoming, making it a straightforward connection between two points. It's primarily a highway-focused trip, so expect consistent travel speeds. Given the relatively short duration and low fuel cost, this route is ideal for a single-day excursion. Plan for a simple, no-fuss journey across the state.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Midpoint
61.2 miles from Riverton, WY
A natural place for your longest stop of the day , about 1h 9m into the drive .
Main Roads
| Road | Distance | Duration |
|---|---|---|
| US 20 | 79.9 mi | 1h 30m |
| North Federal Boulevard | 39 mi | 44m |
| I 25 | 1.4 mi | 1m |
| Salt Creek Highway | 1.1 mi | 1m |
| Sunset Boulevard | 0.3 mi | <1m |
| Howard Street | 0.2 mi | <1m |
Longest stretch:
US 20
— 79.9 mi, about 1h 30m
Turn-by-Turn Driving Directions
Step-by-step road directions between Riverton, WY and Bar Nunn, WY.
1
Start on US 26; WY 789
39 mi
·
44 min
·
North Federal Boulevard
2
Continue on US 20; US 26
77 mi
·
1 hr 27 min
·
US 20; US 26
3
Turn left onto US 20; US 26
3.0 mi
·
3 min
·
US 20; US 26
4
Turn left
0.4 mi
·
50 sec
Toward I 25 North, US 87 North: Midwest
5
Merge onto I 25; US 87
1.4 mi
·
1 min
·
I 25; US 87
6
Take the exit
0.3 mi
·
49 sec
Toward Wardwell Road
7
Turn left onto WY 254
0.2 mi
·
24 sec
·
Howard Street
8
Turn right onto Salt Creek Highway
1.1 mi
·
1 min
·
Salt Creek Highway
9
Turn left onto Sunset Boulevard
0.3 mi
·
36 sec
·
Sunset Boulevard
10
Arrive at destination
Sunset Boulevard
Trip Plan
With a drive time of just over two hours and a fuel cost estimated at $19, this is a flexible, same-day trip. You can depart Riverton at your convenience, but consider leaving mid-morning to allow for a relaxed start and arrive in Bar Nunn with ample daylight. There are no specified stops, so plan your own breaks as needed. Keep an eye on your fuel gauge, especially during the 79.9-mile stretch on US 20, as services might be less frequent than on the interstate. Your main roads are US 20, North Federal Boulevard, and I 25.
Morning Departure
Leave by 9 AM and you'll arrive before lunch.
Evening Departure
Even a 4 PM departure gets you there before dark in summer.
You can normally do this drive in one day.
You may only need one short stretch break if traffic stays light.
The halfway point lands around 61.2 miles from Riverton, WY, or about 1h 9m into the drive.
The longest continuous stretch on this route runs about 79.9 miles.
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 27 miles or 30m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 61.2 miles or 1h 9m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 1h 54m
Traffic, exits, and arrival timing usually matter more near Bar Nunn, WY than in the middle of the route.
Before You Leave
+
Open the route before leaving Riverton, WY 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 Riverton, WY
This is one driving day of about 122.5 miles and 2h 21m.
Your first comfortable stop window is around 27 miles from Riverton, WY.
This route can stay practical as a one-day drive if traffic stays reasonable.
The longest stretch is on US 20 for about 79.9 miles.
Heads-up: tricky spots
5 of 75 decision points cluster between mile 118.8 and 122.2 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
5
118.8 mi into trip
|
~2h 15m in
Turn left toward I 25 North, US 87 North: Midwest
Multiple destination signs - pick the right one
Toward I 25 North, US 87 North: Midwest
4
120.6 mi into trip
|
~2h 17m in
Take the exit toward Wardwell Road
Exit ramp - move to the correct lane early
Toward Wardwell Road
4
120.9 mi into trip
|
~2h 18m in
|
WY 254 / Howard Street
Turn left onto WY 254 / Howard Street
Navigation decision point
4
121.2 mi into trip
|
~2h 18m in
|
Salt Creek Highway
Turn right onto Salt Creek Highway
Navigation decision point
4
122.2 mi into trip
|
~2h 20m in
|
Sunset Boulevard
Turn left onto Sunset Boulevard
Navigation decision point
Fuel & Cost
Regular Gas
$19.41 one way
$38.82 round trip
$4.03/gal
25.4 MPG avg
43 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.22 | $20.35 | $40.70 |
| premium | $4.53 | $21.85 | $43.70 |
| diesel | $5.61 | $27.05 | $54.09 |
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$19
Meals
$25–$50
Total
$44–$69
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 42.9 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $13 in charging · 0 stops · 67% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 36.8 | 0 | $12.86 | $5.88 |
| Efficient EV | 30.6 | 0 | $10.72 | $4.90 |
| EV Truck/SUV | 49 | 0 | $17.15 | $7.84 |
Gas CO2
43 kg
EV CO2
14 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
Bar Nunn, WY
Late night in Bar Nunn on Sunday
Local time
4:02 AM
MDT
Current temp
72°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
3 degrees cooler at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
2h 21m 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 covers 122.5 miles and is predominantly on major roads, with a 66% highway share. You'll experience a long, uninterrupted stretch of 79.9 miles on US 20, offering a chance to settle into a steady pace. The route transitions from US 20 to North Federal Boulevard before merging onto I 25. Expect consistent travel speeds for most of the journey, with the interstate providing faster transit in the latter part of the drive. It's a drive characterized by efficiency rather than winding scenic byways.
66% highway — fuel and pacing are the main things to plan.
10 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 79.9 mi on US 20.
How Hard Is This Drive?
1/10
This is a straightforward highway drive that stays mostly on US 20 and North Federal Boulevard. Navigation is very simple - set it and forget it for most of the drive. The trickiest moment comes around 118.8 miles in.
Driving Effort
1/10
Very easy - short and simple to drive
Balances navigation complexity with total wheel time.
The drive from Riverton, WY to Bar Nunn, WY is easy. At 2h 21m with 66% highway, most drivers will find it relaxed and low-stress.
Where does it get tricky?
The main spots that need attention: at 118.8 miles: Multiple destination signs - pick the right one; at 120.6 miles: Exit ramp - move to the correct lane early; at 120.9 miles (WY 254 / Howard Street): Navigation decision point.
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 2h 21m. Total distance: 122.5 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
2h 21m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (66%). Straightforward navigation.
Frequently Asked Questions
The longest stretch is about 79.9 miles on US 20. The full list of main roads is in the Roads section above.
Yes, with realistic expectations. Build in a stop roughly every 2 hours, have snacks and activities ready, and check the Nearby Places tabs for kid-friendly stops along the way.
Mostly yes along the main roads, but rural stretches through WY can have sparse or no coverage. Before you leave, download offline Google Maps or Apple Maps for the route, and consider downloading music or podcasts instead of streaming. If you depend on data for navigation, keep a paper backup of the turn-by-turn directions.
The main spots that need attention: at 118.8 miles: Multiple destination signs - pick the right one; at 120.6 miles: Exit ramp - move to the correct lane early; at 120.9 miles (WY 254 / Howard Street): Navigation decision point.
Yes. A round trip is manageable in a single day if you plan a break at Bar Nunn, WY 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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