Riverton to South Greeley is 301.2 miles and takes about 5h 18m via I 25, US 20, and North Federal Boulevard, with a fuel budget near $53 and enough daylight to finish in a day. This trip stays within Wyoming, connecting two points in the Mountain West region. With over half the route on highways, expect a fairly direct drive. This is a straightforward, one-day trip that should be manageable for most drivers.
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
150.6 miles from Riverton, WY
A natural place for your longest stop of the day
, about 2h 48m into the drive
.
Main Roads
Road
Distance
Duration
I 25
113.6 mi
1h 47m
US 20
79.6 mi
1h 30m
North Federal Boulevard
39 mi
44m
Central Avenue
2.9 mi
3m
North Greeley Highway
2.3 mi
3m
West College Drive
0.3 mi
<1m
I 25 BUS
0.3 mi
<1m
Cedar Avenue
0.2 mi
<1m
Longest stretch:
I 25
— 113.6 mi, about 1h 47m
Traffic on I-25
Hour-of-day weekday pattern from 28 FHWA count stations on your route.
Peak
4 PM
~376 veh/hr typical
· worst 537
Quietest
2 AM
~27 veh/hr
Peak-to-quiet ratio
13.9×
busier at peak than in the quiet hours
12a6anoon6p11p
Averaged across 52 weeks of 2023 FHWA Travel Monitoring Analysis System data. Weekday hours only (Mon–Fri).
Turn-by-Turn Driving Directions
Step-by-step road directions between Riverton, WY and South Greeley, 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
2.7 mi·3 min·US 20; US 26
4
Take the exit
63 mi·1 hr 6 min
5
Continue on I 25; US 26; US 87
34 mi·31 min·I 25; US 26; US 87
6
Continue on I 25; US 87
76 mi·1 hr 10 min·I 25; US 87
Toward Cheyenne
7
Continue on I 25; US 85; US 87
4.0 mi·4 min·I 25; US 85; US 87
8
Take the exit onto I 25 BUS; US 85; US 87 BUS
0.3 mi·35 sec·I 25 BUS; US 85; US 87 BUS
Exit 12Toward I 25 Business, US 85 South: Central Avenue, Warren Gate 5
9
Turn left onto I 25 BUS; US 85; US 87 BUS
0.8 mi·1 min·Central Avenue
10
Continue on I 25 BUS; US 85; US 87 BUS
2.1 mi·2 min·Central Avenue
11
Continue on I 180; I 25 BUS; US 85; US 87 BUS
2.3 mi·3 min·North Greeley Highway
12
Turn right onto I 25 BUS; US 87 BUS; WY 212
0.3 mi·36 sec·West College Drive
13
Turn left onto Cedar Avenue
0.2 mi·42 sec·Cedar Avenue
14
At end of road, turn left onto Citrus Street
141 ft·8 sec·Citrus Street
15
Turn right onto Rooks Avenue
0.1 mi·29 sec·Rooks Avenue
16
Arrive at destination
Rooks Avenue
Trip Plan
Given the 5h 18m estimated drive time, leaving Riverton in the morning allows for ample daylight to reach South Greeley. The route has only one indicated stop, so plan your breaks accordingly, especially since the longest stretch without a break is over 113 miles on I 25. Keep an eye on your fuel gauge, as the estimated cost is $53, and plan your refueling stops strategically. Given it's a single-day trip, you have the flexibility to depart when you're ready, but an early start is recommended to maximize daylight.
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 150.6 miles from Riverton, WY, or about 2h 48m into the drive.
The longest continuous stretch on this route runs about 113.6 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 66 miles or 1h 15m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 150.6 miles or 2h 48m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 4h 23m
Traffic, exits, and arrival timing usually matter more near South Greeley, 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 301.2 miles and 5h 18m.
Your first comfortable stop window is around 66 miles from Riverton, WY.
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.
The longest stretch is on I 25 for about 113.6 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Place data sourced from public business listings. Hours and availability may vary.
Heads-up: tricky spots
5 of 7
5 decision points cluster between mile 118.6 and 301.1 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
4
118.6 mi into trip|~2h 14m in
Take the exit
Exit ramp - move to the correct lane early
6
295 mi into trip|~5h 8m in|I 25 BUS; US 85; US 87 BUS
Take the exit onto I 25 BUS; US 85; US 87 BUS toward I 25 Business, US 85 South: Central Avenue, Warren Gate 5
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Exit 12
Toward I 25 Business, US 85 South: Central Aven...
4
300.5 mi into trip|~5h 16m in|I 25 BUS; US 87 BUS; WY 212 / West College Drive
Turn right onto I 25 BUS; US 87 BUS; WY 212 / West College Drive
Navigation decision point
5
301.1 mi into trip|~5h 18m in|Citrus Street
At end of road, turn left onto Citrus Street
Navigation decision point
5
301.1 mi into trip|~5h 18m in|Rooks Avenue
Turn right onto Rooks Avenue
Navigation decision point
Fuel & Cost
Regular Gas
$46.95 one way
$93.89 round trip
$3.96/gal25.4 MPG avg105 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.17
$49.48
$98.97
premium
$4.47
$53.05
$106.11
diesel
$4.80
$56.87
$113.74
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$47
Meals
$25–$50
Total
$72–$97
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 105.4 kg one way.
Prices: EIA weekly data, 2026-07-13.
Driving Electric?
About $32 in charging
· 1 stop
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
90.4
1
$31.63
$14.46
Efficient EV
75.3
0
$26.36
$12.05
EV Truck/SUV
120.5
1
$42.17
$19.28
Gas CO2
105 kg
EV CO2
35 kg (67% less)
Plan for 1 charging stop. A 30-minute DC fast charge mid-route should be enough to complete the trip comfortably.
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.
Forecast as of Jul 17, 2026
Origin
Riverton, WY
Evening
in Riverton on Saturday
Local time
7:27 PM
MDT
Current temp
95°F
Mostly Sunny
NNE 3 to 8 mph10% chanceLive forecast
Special Weather Statement
Special Weather Statement issued July 17 at 2:52PM MDT by NWS Salt Lake City UT
Heat Advisory
Heat Advisory issued July 17 at 12:12PM MDT until July 20 at 6:00PM MDT by NWS Cheyenne WY
Destination
South Greeley, WY
Evening
in South Greeley on Saturday
Local time
7:27 PM
MDT
Current temp
90°F
Sunny
SE 10 to 15 mph1% chanceLive forecast
Special Weather Statement
Special Weather Statement issued July 17 at 2:52PM MDT by NWS Salt Lake City UT
Heat Advisory
Heat Advisory issued July 17 at 12:12PM MDT until July 20 at 6:00PM MDT by NWS Cheyenne WY
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
5 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
5h 18m 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.
More Details
What kind of drive is this?
About 64% of this 301.2-mile drive is on highways, meaning you'll spend a good portion of your time on faster roads. The longest continuous stretch on a highway is 113.6 miles on I 25. You'll transition from highway cruising to surface roads, specifically North Federal Boulevard in the latter part of your drive. Expect some merging and potentially denser traffic as you approach your destination.
64% highway — fuel and pacing are the main things to plan.
16 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 113.6 mi on I 25.
How Hard Is This Drive?
3/10
This is a straightforward highway drive that stays mostly on I 25 and US 20. There are only a few real navigation decisions along the way. The trickiest moment comes around 118.6 miles in.
Driving Effort3/10
Easy - simple navigation with a manageable amount of wheel time
Balances navigation complexity with total wheel time.
This is a straightforward 5h 18m drive. You will face about 7 decision points, but nothing that requires special attention if you follow navigation.
Where does it get tricky?
The main spots that need attention: at 118.6 miles: Exit ramp - move to the correct lane early; at 295 miles (I 25 BUS; US 85; US 87 BUS): Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one; at 300.5 miles (I 25 BUS; US 87 BUS; WY 212 / West College Drive): Navigation decision point.
Elevation Profile
High-altitude sections with notable climbs
6,356 ft4,685 ft
Total Climb
2,969 ft
Total Descent
1,874 ft
Highest Point
6,356 ft
~279.7 mi in
Elevation Range
1,671 ft
Notable High Points
6,124 ft at ~64.6 miles+436 ft prominence
6,356 ft at ~279.7 miles+307 ft prominence
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 Riverton, WY to South Greeley, WY, road signs begin pointing toward Cheyenne along the way.
The longest stretch is about 113.6 miles on I 25. The full list of main roads is in the Roads section above.
Yes — we found about 7 rest areas or service plazas within a short detour of the route (from OpenStreetMap). See the Rest Stops tab under Nearby Places for locations and mile markers. Plan to stretch, use the bathroom, and top off fluids every 2–3 hours on longer drives.
Only with planning. This is a long drive for kids — consider splitting it into two days rather than pushing through. Plan at least 1 meaningful breaks. There are 7 rest areas along the route for bathroom stops.
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 118.6 miles: Exit ramp - move to the correct lane early; at 295 miles (I 25 BUS; US 85; US 87 BUS): Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one; at 300.5 miles (I 25 BUS; US 87 BUS; WY 212 / West College Drive): Navigation decision point.
Not recommended in a single day. At 5.3 hours each way, a round trip means 10.6 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at South Greeley, WY before the return drive.
