Origin
Southworth, WA
Late night in Southworth on Sunday
Local time
12:31 AM
PDT
Current temp
64°F
Unavailable
Live forecast
Trip from Southworth, WA to Renton, WA
Compiled and reviewed by the US Trip Planner planning team at COD Solutions Oy · Last reviewed Apr 19, 2026 · Editorial standards
Drive Time
58m
Distance
18.4 mi
30 km
Drive Score
7/10
Good drive
Same Day?
Yes, doable
Fuel Cost
$4
one way
EV Charging
Unknown
Best Time to Leave
4 AM
0h 53m
★
6 AM
0h 58m
8 AM
1h 8m
10 AM
1h 1m
12 PM
1h 1m
3 PM
1h 2m
5 PM
1h 7m
8 PM
0h 55m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Southworth, WA
JOHN CALLERY
Trip Overview
This 18.4-mile journey from Southworth, WA to Renton, WA is a straightforward, one-day trip that will take about 58 minutes to complete. You'll primarily navigate on the Fauntleroy - Southworth Ferry, State Route 518, and Ambaum Boulevard Southwest. With a modest fuel cost estimated at $4, this route is an easy addition to any Pacific Coast exploration. Its 'turn-heavy local drive' profile means you'll be engaging with the road more than on a highway cruise. No overnight stays are necessary, making it a convenient segment for your travels.
Main Roads
| Road | Distance | Duration |
|---|---|---|
| Fauntleroy - Southworth Ferry | 4.8 mi | 29m |
| State Route 518 | 3.4 mi | 4m |
| Ambaum Boulevard Southwest | 2.1 mi | 4m |
| I 405 | 1.5 mi | 1m |
| Southwest 106th Street | 1 mi | 2m |
| Rainier Avenue South | 0.9 mi | 2m |
| Marine View Drive Southwest | 0.7 mi | 2m |
| Southwest 148th Street | 0.6 mi | 1m |
Longest stretch:
Fauntleroy - Southworth Ferry
— 4.8 mi, about 29m
Turn-by-Turn Driving Directions
Step-by-step road directions between Southworth, WA and Renton, WA.
1
Start on this road
35 ft
·
4 sec
·
this road
2
Turn right onto Southeast Southworth Drive
343 ft
·
10 sec
·
Southeast Southworth Drive
3
Continue on WA 160
0.2 mi
·
1 min
·
Southworth Ferry
4
Turn straight onto WA 160
4.8 mi
·
29 min
·
Fauntleroy - Southworth Ferry
5
Continue on Fauntleroy Ferry Terminal
0.2 mi
·
16 sec
·
Fauntleroy Ferry Terminal
6
At end of road, turn right onto Fauntleroy Way Southwest
459 ft
·
15 sec
·
Fauntleroy Way Southwest
Use the left / right lanes.
7
Turn left onto Southwest Wildwood Place
0.1 mi
·
29 sec
·
Southwest Wildwood Place
8
Turn right onto 45th Avenue Southwest
0.2 mi
·
42 sec
·
45th Avenue Southwest
9
Continue on Marine View Drive Southwest
0.7 mi
·
2 min
·
Marine View Drive Southwest
10
Turn left onto Southwest 106th Street
1.0 mi
·
2 min
·
Southwest 106th Street
11
Continue on Southwest 107th Way
0.2 mi
·
33 sec
·
Southwest 107th Way
12
Continue on Southwest 107th Street
0.3 mi
·
47 sec
·
Southwest 107th Street
13
Turn right onto 16th Avenue Southwest
0.6 mi
·
1 min
·
16th Avenue Southwest
Use the straight / right lanes.
14
Continue on Ambaum Boulevard Southwest
2.1 mi
·
4 min
·
Ambaum Boulevard Southwest
Use the straight / right lanes.
15
Turn left onto Southwest 148th Street
0.6 mi
·
1 min
·
Southwest 148th Street
Use the left lane.
16
Continue on WA 518
3.4 mi
·
4 min
·
State Route 518
Use the straight / slight right lanes.
17
Keep slight left at fork onto WA 518
0.3 mi
·
22 sec
·
WA 518
Toward I 405 North: Renton
Use the slight left lane.
18
Continue on I 405
1.5 mi
·
1 min
·
I 405
19
Take the exit
0.4 mi
·
30 sec
Exit 2
Toward WA 167 South: Renton, Auburn
Use the straight / slight right lanes.
20
Keep slight left at fork
0.3 mi
·
26 sec
Toward Renton, Rainier Avenue South
Use the straight lane.
21
Keep slight right at fork
0.2 mi
·
42 sec
Toward WA 167 North: Renton, Rainier Avenue South
Use the slight right lane.
22
Merge onto WA 167
0.2 mi
·
22 sec
·
Valley Freeway
23
Continue on WA 167
0.9 mi
·
2 min
·
Rainier Avenue South
Use the left lane.
24
Turn right
39 ft
·
2 sec
25
Arrive at destination
Heads-up: tricky spots
5 of 135 decision points cluster between mile 5.3 and 17.1 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
7
5.3 mi into trip
|
~32m in
|
Fauntleroy Way Southwest
At end of road, turn right onto Fauntleroy Way Southwest
Lane positioning matters here
Use the left / right lanes.
7
14.6 mi into trip
|
~51m 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
16.4 mi into trip
|
~53m in
Take the exit toward WA 167 South: Renton, Auburn
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Exit 2
Toward WA 167 South: Renton, Auburn
8
16.8 mi into trip
|
~54m in
Keep slight left at fork toward Renton, Rainier Avenue South
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight lane.
Toward Renton, Rainier Avenue South
9
17.1 mi into trip
|
~54m in
Keep slight right at fork toward WA 167 North: Renton, Rainier Avenue South
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Toward WA 167 North: Renton, Rainier Avenue Sou...
Fuel & Cost
Regular Gas
$3.85 one way
$7.70 round trip
$5.32/gal
25.4 MPG avg
6 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $5.58 | $4.04 | $8.08 |
| premium | $5.77 | $4.18 | $8.36 |
| diesel | $5.61 | $4.06 | $8.12 |
No toll roads detected on this route.
Drive Cost (one way)
Fuel
$4
Estimated CO2 emission: 6.4 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $2 in charging · 0 stops · 67% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 5.5 | 0 | $1.93 | $0.88 |
| Efficient EV | 4.6 | 0 | $1.61 | $0.74 |
| EV Truck/SUV | 7.4 | 0 | $2.58 | $1.18 |
Gas CO2
6 kg
EV CO2
2 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
Renton, WA
Late night in Renton on Sunday
Local time
12:31 AM
PDT
Current temp
48°F
Unavailable
Live forecast
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
16 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
58m 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?
Expect a dynamic driving experience on this route, characterized as a 'turn-heavy local drive.' While 29% of the journey involves highway travel, much of your time will be spent on local roads, requiring your attention. The longest uninterrupted stretch you'll encounter is 4.8 miles on the Fauntleroy - Southworth Ferry, offering a different kind of transit than typical road travel. As you transition from the ferry to State Route 518 and Ambaum Boulevard Southwest, the character shifts from open water to more urban and suburban environments, with frequent intersections.
Only 29% highway — the rest is turn-by-turn surface driving.
25 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 4.8 mi on Fauntleroy - Southworth Ferry.
How Hard Is This Drive?
9/10
Expect a hands-on drive with frequent turns and local roads rather than long highway stretches. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 5.3 miles in near Fauntleroy Way Southwest.
Driving Effort
9/10
Focused - lots of decisions in a short distance, but it is over quickly
Balances navigation complexity with total wheel time.
This is a short but busy drive. With 13 decision points packed into just 18.4 miles, you will need to pay attention to lane changes and exits — but the whole thing is over in 58m.
Where does it get tricky?
The main spots that need attention: at 5.3 miles (Fauntleroy Way Southwest): Lane positioning matters here; at 14.6 miles (WA 518): Highway fork - watch signs carefully. Lane positioning matters here; at 16.4 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Southworth, WA and Renton, WA, road signs point toward Auburn and Rainier Avenue South.
Auburn
16.4 mi in
|
~53m
Rainier Avenue South
16.8 mi in
|
~54m
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 58m. Total distance: 18.4 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
58m drive, comfortable solo distance.
EV Driver
0 DC fast chargers along the route. Coverage: unknown.
Scenic Drive
Mostly surface roads route profile.
Frequently Asked Questions
The longest stretch is about 4.8 miles on Fauntleroy - Southworth Ferry. The full list of main roads is in the Roads section above.
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 Renton, WA before sunset when you can. Check the Trip Plan for departure windows that land you in daylight.
Yes. At under 2 hours behind the wheel, this works well for families — plan one quick stop if you have younger kids.
The main spots that need attention: at 5.3 miles (Fauntleroy Way Southwest): Lane positioning matters here; at 14.6 miles (WA 518): Highway fork - watch signs carefully. Lane positioning matters here; at 16.4 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.
Yes. A round trip is manageable in a single day if you plan a break at Renton, WA 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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