Ames to Osceola County is 200.3 miles and takes about 4 hours 13 minutes via US 20 and I-35 Business, with a fuel budget near $31 and enough daylight to finish in a day. This trip stays entirely within Iowa, traversing the Midwest region. Expect a primarily highway drive that's straightforward for a single-day excursion. It's a practical option if you're looking for an efficient way to get between these two points in the state, with most of the travel on established roadways.
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
100.2 miles from Ames, IA
A natural place for your longest stop of the day
, about 1h 56m into the drive
.
Main Roads
Road
Distance
Duration
US 20
92.8 mi
1h 47m
I 35 Business
29 mi
31m
US 59
13.6 mi
18m
Silver Avenue
13.5 mi
19m
Roosevelt Avenue
13 mi
17m
20th Avenue
9.2 mi
12m
Armstrong Avenue
6 mi
8m
470th Street
4.1 mi
5m
Longest stretch:
US 20
— 92.8 mi, about 1h 47m
Traffic on I-35
Hour-of-day weekday pattern from 8 FHWA count stations on your route.
Peak
3 PM
~974 veh/hr typical
· worst 1,494
Quietest
2 AM
~96 veh/hr
Peak-to-quiet ratio
10.1×
busier at peak than in the quiet hours
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Averaged across 99 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 Ames, IA and Osceola County, IA.
1
Start on I 35 Business
2.7 mi·5 min·13th Street
2
Turn left onto I 35 Business
29 mi·31 min·I 35 Business
Toward I 35 North: Minneapolis
3
Take the exit
0.3 mi·56 sec
Toward US 20 West: Fort Dodge
4
Merge onto US 20
93 mi·1 hr 47 min·US 20
5
Turn right onto CR M27
6.0 mi·8 min·Armstrong Avenue
6
Continue on CR M27
9.2 mi·12 min·20th Avenue
7
Turn left onto IA 7
1.1 mi·1 min·Highway 7
8
Continue on IA 7
2.1 mi·2 min·State Highway 7
9
Continue on IA 7
1.4 mi·2 min·1st Street
10
Continue on IA 7
1.9 mi·2 min·V Avenue
11
Turn left onto IA 3
0.2 mi·22 sec·State Highway 3
12
Turn straight onto IA 3
3.1 mi·4 min·530th Street
13
Turn right onto IA 3
2.7 mi·3 min·State Highway 3
14
Turn right onto US 59
14 mi·18 min·US 59
15
Turn left onto US 59; IA 10
4.1 mi·5 min·470th Street
16
Continue on US 59; IA 10
7.2 mi·9 min·Silver Avenue
Use the left lane.
17
Continue on US 59
1.6 mi·2 min·South Rerick Avenue
18
Continue on US 59
6.0 mi·8 min·Silver Avenue
19
Turn left onto US 18; US 59
1.0 mi·1 min·320th Street
20
Turn right onto US 59
13 mi·17 min·Roosevelt Avenue
21
Turn right onto 190th Street
1.0 mi·3 min·190th Street
22
Turn left onto Silver Avenue
0.3 mi·1 min·Silver Avenue
23
Arrive at destination
Silver Avenue
Trip Plan
With a drive time under 4.5 hours, this route is easily manageable in a single day. Consider leaving Ames in the morning to give yourself ample time to reach Osceola County without feeling rushed. The longest stretch without significant changes in road type is 92.8 miles on US 20, so plan your fuel and rest stops accordingly, perhaps before you begin that segment. The $31 fuel cost is a good estimate, but always keep an eye on your gauge, especially when you're on the longer highway portions. Since it's a shorter trip, you have the flexibility to depart when it's most convenient for you.
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 100.2 miles from Ames, IA, or about 1h 56m into the drive.
The longest continuous stretch on this route runs about 92.8 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 44 miles or 51m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 100.2 miles or 1h 56m 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 20m
Traffic, exits, and arrival timing usually matter more near Osceola County, IA than in the middle of the route.
Before You Leave
+
Open the route before leaving Ames, IA 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 Ames, IA
This is one driving day of about 200.3 miles and 4h 13m.
Your first comfortable stop window is around 44 miles from Ames, IA.
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 US 20 for about 92.8 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 11
5 decision points cluster between mile 2.7 and 185 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
5
2.7 mi into trip|~5m in|I 35 Business
Turn left onto I 35 Business toward I 35 North: Minneapolis
Navigation decision point
Toward I 35 North: Minneapolis
4
31.6 mi into trip|~36m in
Take the exit toward US 20 West: Fort Dodge
Exit ramp - move to the correct lane early
Toward US 20 West: Fort Dodge
4
124.7 mi into trip|~2h 25m in|CR M27 / Armstrong Avenue
Turn right onto CR M27 / Armstrong Avenue
Navigation decision point
4
166.1 mi into trip|~3h 22m in|US 59; IA 10 / 470th Street
Turn left onto US 59; IA 10 / 470th Street
Navigation decision point
4
185 mi into trip|~3h 49m in|US 18; US 59 / 320th Street
Turn left onto US 18; US 59 / 320th Street
Navigation decision point
Fuel & Cost
Regular Gas
$31.05 one way
$62.11 round trip
$3.94/gal25.4 MPG avg70 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.32
$34.05
$68.10
premium
$4.93
$38.86
$77.72
diesel
$5.60
$44.15
$88.31
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$31
Meals
$25–$50
Total
$56–$81
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 70.1 kg one way.
Prices: EIA weekly data, 2026-08-31.
Driving Electric?
About $21 in charging
· 0 stops
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
60.1
0
$21.03
$9.61
Efficient EV
50.1
0
$17.53
$8.01
EV Truck/SUV
80.1
1
$28.04
$12.82
Gas CO2
70 kg
EV CO2
23 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.
Forecast as of Aug 17, 2026
Origin
Ames, IA
Late night
in Ames on Wednesday
Local time
1:58 AM
CDT
Current temp
60°F
Mostly Clear
NW 3 mph0% chanceLive forecast
Flood Warning
Flood Warning issued August 16 at 8:07PM CDT until August 17 at 4:42PM CDT by NWS Quad Cities IA IL
Flood Warning
Flood Warning issued August 16 at 8:02PM CDT by NWS Des Moines IA
Destination
Osceola County, IA
Late night
in Osceola County on Wednesday
Local time
1:58 AM
CDT
Current temp
57°F
Partly Cloudy
0 mph0% chanceLive forecast
Flood Warning
Flood Warning issued August 16 at 8:07PM CDT until August 17 at 4:42PM CDT by NWS Quad Cities IA IL
Flood Warning
Flood Warning issued August 16 at 8:02PM CDT by NWS Des Moines IA
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
4h 13m 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?
This drive is mostly highway, with 71% of the 200.3 miles on faster roads. You'll encounter a long stretch of 92.8 miles on US 20 before transitioning to other routes. The route includes some time on I-35 Business, suggesting a pattern of more developed road infrastructure for a significant portion of the travel. Expect a consistent cruising experience for much of the 4 hour 13 minute duration.
71% highway — fuel and pacing are the main things to plan.
23 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 92.8 mi on US 20.
How Hard Is This Drive?
3/10
This is a straightforward highway drive that stays mostly on US 20 and I 35 Business. There are only a few real navigation decisions along the way. The trickiest moment comes around 2.7 miles in near I 35 Business.
Driving Effort3/10
Easy - simple navigation with a manageable amount of wheel time
Balances navigation complexity with total wheel time.
This is a straightforward 4h 13m drive. You will face about 11 decision points, but nothing that requires special attention if you follow navigation.
Where does it get tricky?
The main spots that need attention: at 2.7 miles (I 35 Business): Navigation decision point; at 31.6 miles: Exit ramp - move to the correct lane early; at 124.7 miles (CR M27 / Armstrong Avenue): Navigation decision point.
Ames is a pleasant college town in Central Iowa, sitting astride the Skunk River roughly 30 miles north of Des Moines. Life in Ames follows the ebb and flow of the academic year at Iowa State University, which is the city's primary draw.
Top landmarks
•Catt Hall — building on Iowa State University's campus, U.S.
•Food Sciences Building — historic building on the campus of Iowa State University in Ames, Iowa, United S...
The longest stretch is about 92.8 miles on US 20. The full list of main roads is in the Roads section above.
We did not find dedicated rest areas on this route. For a drive this long, plan bathroom and stretch breaks around gas stations, fast-food stops, or small-town downtowns — check the Nearby Places section for options.
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.
The main spots that need attention: at 2.7 miles (I 35 Business): Navigation decision point; at 31.6 miles: Exit ramp - move to the correct lane early; at 124.7 miles (CR M27 / Armstrong Avenue): Navigation decision point.
Possible but tiring. At 4.2 hours each way, an in-and-out day trip would put you behind the wheel for 8.5 hours — manageable with a long break at Osceola County, IA, but most travelers stay overnight.
