Kennewick, WA to South Hill, WA is 240.4 miles and takes about 4h 40m via US 97, US 12, and I 82, with a fuel budget near $51 and enough daylight to finish in a day. This trip stays within Washington, connecting two points in the Pacific Coast region. With nearly all of it on highways, expect a fairly direct and efficient drive. This route is ideal for a single-day trip when you want to cover ground without extensive stops.
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
120.2 miles from Kennewick, WA
A natural place for your longest stop of the day
, about 2h 14m into the drive
.
Main Roads
Road
Distance
Duration
US 97
85.7 mi
1h 35m
US 12
70.9 mi
1h 17m
I 82
31 mi
33m
State Route 18
24.2 mi
31m
WA 240
11.6 mi
13m
Valley Freeway
7.3 mi
9m
Shaw Road
3.4 mi
7m
Military Road East
0.6 mi
1m
Longest stretch:
US 97
— 85.7 mi, about 1h 35m
Traffic on I-90
Hour-of-day weekday pattern from 27 FHWA count stations on your route.
Peak
1 PM
~1,339 veh/hr typical
· worst 2,355
Quietest
2 AM
~108 veh/hr
Peak-to-quiet ratio
12.4×
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 Kennewick, WA and South Hill, WA.
1
Start on North Newport Street
0.1 mi·37 sec·North Newport Street
2
Turn left onto West Kennewick Avenue
0.5 mi·1 min·West Kennewick Avenue
3
Turn left onto North Fruitland Street
0.6 mi·1 min·North Fruitland Street
4
Turn left onto West Columbia Drive
0.5 mi·1 min·West Columbia Drive
5
Enter roundabout onto WA 240
0.1 mi·8 sec·WA 240
6
Continue on WA 240
6.4 mi·8 min·WA 240
Use the straight / slight right lanes.
7
Keep slight right at fork onto WA 240
5.1 mi·5 min·WA 240
Use the slight right lane.
8
Continue on I 182; US 12
0.1 mi·7 sec·I 182; US 12
9
Keep slight right at fork onto US 12
71 mi·1 hr 17 min·US 12
Toward I 82 West, US 12 West: Prosser, Yakima
10
Continue on I 82; US 97
31 mi·33 min·I 82; US 97
11
Keep slight left at fork onto US 97
86 mi·1 hr 35 min·US 97
Toward I 90 WestUse the straight / slight right lanes.
12
Take the exit
0.2 mi·30 sec
Exit 25Toward WA 18 West: AuburnUse the slight right lane.
13
Keep slight left at fork
448 ft·13 sec
Toward SR 18 west, Snoqualmie Parkway: Auburn, TacomaUse the straight / left / right lanes.
14
Merge onto WA 18
0.3 mi·25 sec·Snoqualmie Parkway
15
Continue on WA 18
24 mi·31 min·State Route 18
Use the straight / slight right lanes.
16
Take the exit
0.2 mi·19 sec
Toward WA 167: Renton, PuyallupUse the slight right lane.
17
Keep slight left at fork
0.3 mi·26 sec
Toward WA 167 South: Puyallup, West Valley HighwayUse the straight / slight right lanes.
18
Keep slight right at fork
0.2 mi·24 sec
Toward WA 167 South: PuyallupUse the straight / right lanes.
19
Merge onto WA 167
7.3 mi·9 min·Valley Freeway
Use the straight / slight right lanes.
20
Take the exit
0.6 mi·47 sec
Toward WA 410 East: Sumner, YakimaUse the straight / slight right lanes.
21
Continue on WA 410
0.2 mi·12 sec·WA 410
22
Take the exit
0.3 mi·36 sec
Toward East Main Traffic AvenueUse the slight right lane.
23
Turn right onto East Main
0.6 mi·1 min·East Main
Use the left / right lanes.
24
Continue on Shaw Road
3.4 mi·7 min·Shaw Road
Use the left lane.
25
Turn right onto Military Road East
0.6 mi·1 min·Military Road East
26
Turn right onto Reservoir Road East
363 ft·10 sec·Reservoir Road East
27
Continue on 128th Street East
0.4 mi·59 sec·128th Street East
28
Turn right onto 117th Avenue East
508 ft·17 sec·117th Avenue East
29
Continue on 126th Street Court East
0.1 mi·25 sec·126th Street Court East
30
Arrive at destination
126th Street Court East
Trip Plan
Given the 4h 40m estimated drive time, leaving Kennewick in the morning is your best bet to arrive in South Hill with plenty of daylight. The route is designed for a single day, so you can be flexible with your departure. You'll want to plan for at least one stop to stretch your legs and refuel, especially since the longest stretch without a route change is 85.7 miles on US 97. Keep an eye on your fuel levels as you approach South Hill, as services can become more spread out in some sections between major towns.
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 120.2 miles from Kennewick, WA, or about 2h 14m into the drive.
The longest continuous stretch on this route runs about 85.7 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 53 miles or 1h 1m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 120.2 miles or 2h 14m 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 40m
Traffic, exits, and arrival timing usually matter more near South Hill, WA than in the middle of the route.
Before You Leave
+
Open the route before leaving Kennewick, 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 Kennewick, WA
This is one driving day of about 240.4 miles and 4h 40m.
Your first comfortable stop window is around 53 miles from Kennewick, 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 US 97 for about 85.7 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 21
5 decision points cluster between mile 115.5 and 226.6 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
7
115.5 mi into trip|~2h 9m in|US 97
Keep slight left at fork onto US 97 toward I 90 West
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
Toward I 90 West
7
201.2 mi into trip|~3h 44m in
Take the exit toward WA 18 West: Auburn
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the slight right lane.
Exit 25
Toward WA 18 West: Auburn
9
201.5 mi into trip|~3h 45m in
Keep slight left at fork toward SR 18 west, Snoqualmie Parkway: Auburn, Tacoma
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / left / right lanes.
Toward SR 18 west, Snoqualmie Parkway: Auburn,...
9
226.3 mi into trip|~4h 17m in
Keep slight left at fork toward WA 167 South: Puyallup, West Valley Highway
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Toward WA 167 South: Puyallup, West Valley High...
8
226.6 mi into trip|~4h 17m in
Keep slight right at fork toward WA 167 South: Puyallup
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / right lanes.
Toward WA 167 South: Puyallup
Fuel & Cost
Regular Gas
$46.83 one way
$93.66 round trip
$4.95/gal25.4 MPG avg84 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$5.18
$49.06
$98.13
premium
$5.39
$51.02
$102.05
diesel
$4.80
$45.39
$90.78
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: 84.1 kg one way.
Prices: EIA weekly data, 2026-07-13.
Driving Electric?
About $25 in charging
· 0 stops
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
72.1
0
$25.24
$11.54
Efficient EV
60.1
0
$21.04
$9.62
EV Truck/SUV
96.2
1
$33.66
$15.39
Gas CO2
84 kg
EV CO2
28 kg (67% less)
Plan for 0 charging stops, roughly every 270 miles. Allow 25-40 minutes per stop at a DC fast charger.
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
Kennewick, WA
Morning
in Kennewick on Sunday
Local time
11:44 AM
PDT
Current temp
64°F
Mostly Clear
SW 8 to 13 mph4% chanceLive forecast
Red Flag Warning
Red Flag Warning issued July 16 at 8:50PM PDT until July 17 at 7:00AM PDT by NWS Spokane WA
Red Flag Warning
Red Flag Warning issued July 16 at 8:50PM PDT until July 17 at 11:00PM PDT by NWS Spokane WA
Destination
South Hill, WA
Morning
in South Hill on Sunday
Local time
11:44 AM
PDT
Current temp
54°F
Mostly Cloudy
WSW 1 to 5 mph11% chanceLive forecast
Red Flag Warning
Red Flag Warning issued July 16 at 8:50PM PDT until July 17 at 7:00AM PDT by NWS Spokane WA
Red Flag Warning
Red Flag Warning issued July 16 at 8:50PM PDT until July 17 at 11:00PM 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
10 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 40m 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...
19 mi from route
~48 min detour
Free
near mile 215.5
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
This is a predominantly highway drive, with 96% of the 240.4 miles on major roads. You'll encounter the longest stretch without a major change in route on US 97, covering 85.7 miles. Expect mostly rural cruising and straightforward highway travel until you approach the Seattle metropolitan area. The transition to more frequent exits and urban merging will signal your approach to the South Hill area.
96% highway — fuel and pacing are the main things to plan.
30 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 85.7 mi on US 97.
How Hard Is This Drive?
9/10
This is a straightforward highway drive that stays mostly on US 97 and US 12. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 115.5 miles in near US 97.
Driving Effort9/10
High effort - long or complex enough to need steady focus all day
Balances navigation complexity with total wheel time.
This is a demanding drive. With 21 significant decision points across 240.4 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 115.5 miles (US 97): Highway fork - watch signs carefully. Lane positioning matters here; at 201.2 miles: Exit ramp - move to the correct lane early. Lane positioning matters here; at 201.5 miles: Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one.
Elevation Profile
Hilly terrain with moderate elevation changes
2,546 ft98 ft
Total Climb
3,278 ft
Total Descent
3,149 ft
Highest Point
2,546 ft
~171.7 mi in
Elevation Range
2,448 ft
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Kennewick, WA and South Hill, WA, road signs point toward Yakima, Snoqualmie Parkway: Auburn, Tacoma, Puyallup and Valley Highway.
Kennewick is a city in Benton County along the Columbia River of Washington State, roughly between the Yakima and Snake Rivers on the south bank of the Columbia.
Kennewick is the largest of the Tri-Cities of Washington, which also includes Pasco and Richland. The Tri-Cities are the third most populous metropolitan area in the state, after Seattle-Tacoma and Spokane.
Doable as a same-day drive at 4h 40m. Total distance: 240.4 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
4h 40m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (96%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 85.7 miles on US 97. 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.
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 South Hill, 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. Dedicated rest areas are limited, so plan gas or food stops as your bathroom breaks.
The main spots that need attention: at 115.5 miles (US 97): Highway fork - watch signs carefully. Lane positioning matters here; at 201.2 miles: Exit ramp - move to the correct lane early. Lane positioning matters here; at 201.5 miles: Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one.
Yes — Klondike Gold Rush - Seattle Unit National Historical Park. See the National Parks section for detour distances and tips on detours.
Possible but tiring. At 4.7 hours each way, an in-and-out day trip would put you behind the wheel for 9.4 hours — manageable with a long break at South Hill, WA, but most travelers stay overnight.
