Riverton, WA to Spokane, WA is 285.1 miles and takes about 5h 18m via I 90, I 405, and Military Road South, with a fuel budget near $60 and enough daylight to finish in a day. This trip stays within the Pacific Coast region, traversing Washington state. It's a straightforward drive that primarily utilizes major highways, making it a practical choice for a single-day excursion. The route offers a consistent driving experience, ideal for those looking to cover ground efficiently without extensive planning.
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
142.5 miles from Riverton, WA
A natural place for your longest stop of the day
, about 2h 39m into the drive
.
Main Roads
Road
Distance
Duration
I 90
269.5 mi
4h 53m
I 405
10.5 mi
13m
Military Road South
1.2 mi
2m
WA 518
1.2 mi
1m
South Lincoln Street
0.4 mi
1m
International Boulevard
0.3 mi
<1m
West 4th Avenue
0.2 mi
<1m
West Freeway Avenue
0.2 mi
<1m
Longest stretch:
I 90
— 269.5 mi, about 4h 53m
Traffic on I-90
Hour-of-day weekday pattern from 83 FHWA count stations on your route.
Peak
3 PM
~1,832 veh/hr typical
· worst 2,477
Quietest
2 AM
~107 veh/hr
Peak-to-quiet ratio
17.1×
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, WA and Spokane, WA.
1
Start on South 133rd Street
267 ft·13 sec·South 133rd Street
2
Turn left onto Military Road South
1.2 mi·2 min·Military Road South
3
Turn left onto South 152nd Street
176 ft·12 sec·South 152nd Street
4
Turn right onto International Boulevard
0.3 mi·36 sec·International Boulevard
Use the right lane.
5
Take the ramp
0.3 mi·46 sec
Toward WA 518 East: RentonUse the left lane.
6
Merge onto WA 518
0.9 mi·1 min·WA 518
Use the straight / slight right lanes.
7
Keep slight left at fork onto WA 518
0.3 mi·22 sec·WA 518
Toward I 405 North: RentonUse the slight left lane.
8
Continue on I 405
10 mi·13 min·I 405
Use the straight / slight right lanes.
9
Take the exit
0.2 mi·31 sec
Exit 11Toward I 90: Seattle, SpokaneUse the slight right lane.
10
Keep slight right at fork
0.4 mi·45 sec
Toward I 90 East: SpokaneUse the slight right lane.
11
Merge onto I 90
268 mi·4 hr 51 min·I 90
Use the straight / slight right lanes.
12
Merge onto I 90; US 2; US 395
1.8 mi·2 min·I 90; US 2; US 395
13
Take the exit
0.2 mi·31 sec
Toward Maple Street, Lincoln Street, Walnut Street
14
Continue on West 5th Avenue
382 ft·12 sec·West 5th Avenue
15
Turn straight onto West Freeway Avenue
0.2 mi·32 sec·West Freeway Avenue
16
Continue on West 4th Avenue
0.2 mi·31 sec·West 4th Avenue
17
Continue on West 4th Avenue
167 ft·4 sec·West 4th Avenue
18
Continue on South Lincoln Street
0.4 mi·1 min·South Lincoln Street
Use the straight / left lanes.
19
Turn left onto West Main Avenue
0.2 mi·34 sec·West Main Avenue
20
Turn right
26 ft·8 sec
21
Turn left onto South Gorge Trail
157 ft·17 sec·South Gorge Trail
22
Arrive at destination
South Gorge Trail
Trip Plan
Given the 5h 18m duration, starting your drive from Riverton in the morning is advisable to maximize daylight. With only one recommended stop, you can easily complete this trip in a single day. The fuel cost is estimated at $60, so ensure you have sufficient funds or a working payment method. Pay attention to exit numbers as you navigate the transitions between I 90, I 405, and Military Road South, as these can help you stay on track for Spokane.
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 142.5 miles from Riverton, WA, or about 2h 39m into the drive.
The longest continuous stretch on this route runs about 269.5 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 63 miles or 1h 13m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 142.5 miles or 2h 39m 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 19m
Traffic, exits, and arrival timing usually matter more near Spokane, WA than in the middle of the route.
Before You Leave
+
Open the route before leaving Riverton, WA 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, WA
This is one driving day of about 285.1 miles and 5h 18m.
Your first comfortable stop window is around 63 miles from Riverton, WA.
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 90 for about 269.5 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 14
5 decision points cluster between mile 1.3 and 13.9 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
7
1.3 mi into trip|~3m in|International Boulevard
Turn right onto International Boulevard
Lane positioning matters here
Use the right lane.
6
1.6 mi into trip|~3m in
Take the ramp toward WA 518 East: Renton
Lane positioning matters here
Use the left lane.
Toward WA 518 East: Renton
7
2.8 mi into trip|~5m in|WA 518
Keep slight left at fork onto WA 518 toward I 405 North: Renton
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight left lane.
Toward I 405 North: Renton
8
13.6 mi into trip|~19m in
Take the exit toward I 90: Seattle, Spokane
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Exit 11
Toward I 90: Seattle, Spokane
7
13.9 mi into trip|~19m in
Keep slight right at fork toward I 90 East: Spokane
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight right lane.
Toward I 90 East: Spokane
Fuel & Cost
Regular Gas
$55.54 one way
$111.08 round trip
$4.95/gal25.4 MPG avg100 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$5.18
$58.19
$116.37
premium
$5.39
$60.51
$121.02
diesel
$4.80
$53.83
$107.66
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$56
Meals
$25–$50
Total
$81–$106
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 99.8 kg one way.
Prices: EIA weekly data, 2026-07-13.
Driving Electric?
About $30 in charging
· 1 stop
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
85.5
1
$29.94
$13.68
Efficient EV
71.3
0
$24.95
$11.40
EV Truck/SUV
114
1
$39.91
$18.25
Gas CO2
100 kg
EV CO2
33 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 18, 2026
Origin
Riverton, WA
Morning
in Riverton on Sunday
Local time
10:18 AM
PDT
Current temp
57°F
Partly Cloudy
WNW 1 to 5 mph1% chanceLive forecast
Red Flag Warning
Red Flag Warning issued July 17 at 11:13AM PDT until July 17 at 9:00PM PDT by NWS Spokane WA
Red Flag Warning
Red Flag Warning issued July 17 at 11:13AM PDT until July 17 at 9:00PM PDT by NWS Spokane WA
Destination
Spokane, WA
Morning
in Spokane on Sunday
Local time
10:18 AM
PDT
Current temp
92°F
Patchy Smoke
SW 6 mph7% chanceLive forecast
Red Flag Warning
Red Flag Warning issued July 17 at 11:13AM PDT until July 17 at 9:00PM PDT by NWS Spokane WA
Red Flag Warning
Red Flag Warning issued July 17 at 11:13AM PDT until July 17 at 9:00PM PDT by NWS Spokane WA
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
35 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
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.
National Parks Near This Route
Worth a detour if your schedule allows.
Klondike Gold Rush - Seattle Unit National Historical Park
National Historical Park
Seattle flourished during and after the Klondike Gold Rush. Merchants supplied people from around the world passing through this port city on their way to a remarkable adventure in the Yukon Territory...
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
This drive is almost entirely on highways, with a 99% highway share. You'll spend the vast majority of your time on the interstate, with the longest stretch covering 269.5 miles on I 90. Expect to transition from I 90 to I 405 and Military Road South, indicating a shift from interstate cruising to more local road access as you approach your destination. The dense exit patterns on the interstates are a noticeable feature.
99% highway — fuel and pacing are the main things to plan.
22 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 269.5 mi on I 90.
How Hard Is This Drive?
7/10
This is a straightforward highway drive that stays mostly on I 90 and I 405. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 1.3 miles in near International Boulevard.
Driving Effort7/10
Demanding - plan breaks and stay ahead of the key maneuvers
Balances navigation complexity with total wheel time.
This is a demanding drive. With 14 significant decision points across 285.1 miles, you will need to stay alert - especially through interchange areas and urban stretches. Consider splitting it into segments if you are not comfortable with fast highway navigation.
Where does it get tricky?
The main spots that need attention: at 1.3 miles (International Boulevard): Lane positioning matters here; at 1.6 miles: Lane positioning matters here; at 2.8 miles (WA 518): Highway fork - watch signs carefully. Lane positioning matters here.
Spokane is the second-largest city in Washington State, and the largest between Seattle and Minneapolis. It is the economic hub of the "Inland Empire", a name used for Eastern Washington and the Idaho Panhandle (pre-dating by nearly a century the use of the same title by a region in Southern California). It is at the north edge of the Palouse, where gently rolling hills of wheat fields end at the Spokane River valley.
This article also includes the suburbs of Liberty Lake and Spokane Valley.
Top landmarks
•Monroe Street Bridge — bridge in Spokane, Washington
•Montvale Hotel — hotel in Spokane, Washington
•Manito Park and Botanical Gardens — park in Spokane, Washington state, USA
Doable as a same-day drive at 5h 18m. Total distance: 285.1 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
5h 18m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (99%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 269.5 miles on I 90. The full list of main roads is in the Roads section above.
Yes — we found about 20 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.
It helps. This route has a higher-than-average number of complex decision points, which get harder in the dark. If the last hour of the trip is on surface roads or mountain grades, aim to arrive at Spokane, WA before sunset when you can. Check the Trip Plan for departure windows that land you in daylight.
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 20 rest areas along the route for bathroom stops.
The main spots that need attention: at 1.3 miles (International Boulevard): Lane positioning matters here; at 1.6 miles: Lane positioning matters here; at 2.8 miles (WA 518): Highway fork - watch signs carefully. Lane positioning matters here.
Yes — Klondike Gold Rush - Seattle Unit National Historical Park. See the National Parks section for detour distances and tips on detours.
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 Spokane, WA before the return drive.
