Origin
Castle Rock, WA
Morning in Castle Rock on Tuesday
Local time
8:22 AM
PDT
Current temp
68°F
Unavailable
Live forecast
Trip from Castle Rock, WA to Renton, WA
Pin this tripCompiled and reviewed by the US Trip Planner planning team at COD Solutions Oy · Last reviewed Apr 21, 2026 · Editorial standards
Drive Time
2h 12m
Distance
108.8 mi
175 km
Drive Score
8/10
Great drive
Same Day?
Yes, doable
Fuel Cost
$23
one way
EV Charging
Unknown
Best Time to Leave
4 AM
2h 3m
★
6 AM
2h 12m
8 AM
2h 31m
10 AM
2h 19m
12 PM
2h 17m
3 PM
2h 19m
5 PM
2h 30m
8 PM
2h 7m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Castle Rock, WA
JOHN CALLERY
Trip Overview
This 108.8-mile drive from Castle Rock, WA to Renton, WA is easily manageable as a single-day trip, taking about 2 hours and 12 minutes. The majority of your journey, 97%, will be on highways, primarily I-5 and I-405, with Rainier Avenue South marking the final stretch. With an estimated fuel cost of $23, this is an economical option for a Pacific Coast to Pacific Coast journey within Washington State. This route is focused on efficient travel, making it ideal if you're looking to get from point A to point B without extensive detours.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Midpoint
54.4 miles from Castle Rock, WA
A natural place for your longest stop of the day , about 1h 4m into the drive .
Main Roads
| Road | Distance | Duration |
|---|---|---|
| I 5 | 103.8 mi | 2h 1m |
| I 405 | 1.3 mi | 1m |
| Rainier Avenue South | 0.9 mi | 2m |
| Huntington Avenue North | 0.5 mi | 1m |
| Front Avenue Southwest | 0.2 mi | <1m |
| Valley Freeway | 0.2 mi | <1m |
| Mount Saint Helens Way Northeast | <0.1 mi | <1m |
| Barr Street | <0.1 mi | <1m |
Longest stretch:
I 5
— 103.8 mi, about 2h 1m
Turn-by-Turn Driving Directions
Step-by-step road directions between Castle Rock, WA and Renton, WA.
1
Start on Front Avenue Southwest
0.2 mi
·
33 sec
·
Front Avenue Southwest
2
Turn right onto Barr Street
148 ft
·
9 sec
·
Barr Street
3
Turn left onto I 5 Business; WA 411
0.5 mi
·
1 min
·
Huntington Avenue North
4
Continue on I 5 Business; WA 411
408 ft
·
13 sec
·
Mount Saint Helens Way Northeast
5
Take the ramp
0.4 mi
·
53 sec
Toward I 5 North
6
Merge onto I 5
83 mi
·
1 hr 36 min
·
I 5
Use the straight / slight right lanes.
7
Keep slight right at fork onto I 5
21 mi
·
25 min
·
I 5
Use the slight right lane.
8
Take the exit
448 ft
·
10 sec
Exit 154A-B
Toward WA 518 West, I 405 North: Seattle-Tacoma International Airport, Bellevue
Use the straight / slight right lanes.
9
Keep slight right at fork
0.4 mi
·
50 sec
Exit 154B
Toward I 405 North: Renton, Bellevue
Use the slight right lane.
10
Merge onto I 405
1.3 mi
·
1 min
·
I 405
11
Take the exit
0.4 mi
·
30 sec
Exit 2
Toward WA 167 South: Renton, Auburn
Use the straight / slight right lanes.
12
Keep slight left at fork
0.3 mi
·
26 sec
Toward Renton, Rainier Avenue South
Use the straight lane.
13
Keep slight right at fork
0.2 mi
·
42 sec
Toward WA 167 North: Renton, Rainier Avenue South
Use the slight right lane.
14
Merge onto WA 167
0.2 mi
·
22 sec
·
Valley Freeway
15
Continue on WA 167
0.9 mi
·
2 min
·
Rainier Avenue South
Use the left lane.
16
Turn right
39 ft
·
2 sec
17
Arrive at destination
Trip Plan
Given the relatively short 2-hour and 12-minute duration for this 108.8-mile trip, you have plenty of flexibility. Aim to depart Castle Rock, WA, in the morning to avoid potential afternoon traffic closer to Renton, WA. Since there are no designated stops in the data, plan your own breaks as needed, perhaps at one of the many service areas along I-5. Keep an eye on your fuel gauge, especially during the longest stretch of 103.8 miles on I-5, to ensure you have enough to reach your destination comfortably, considering the $23 fuel cost.
Morning Departure
Leave by 9 AM and you'll arrive before lunch.
Evening Departure
Even a 4 PM departure gets you there before dark in summer.
You can normally do this drive in one day.
You may only need one short stretch break if traffic stays light.
The halfway point lands around 54.4 miles from Castle Rock, WA, or about 1h 4m into the drive.
The longest continuous stretch on this route runs about 103.8 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 24 miles or 29m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 54.4 miles or 1h 4m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 1h 45m
Traffic, exits, and arrival timing usually matter more near Renton, WA than in the middle of the route.
Before You Leave
+
Open the route before leaving Castle Rock, 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 Castle Rock, WA
This is one driving day of about 108.8 miles and 2h 12m.
Your first comfortable stop window is around 24 miles from Castle Rock, WA.
This route can stay practical as a one-day drive if traffic stays reasonable.
The longest stretch is on I 5 for about 103.8 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Mid-route town
Meal stop
54 mi into the route
Best for: Lunch, fuel, and a longer reset
This sits close to the middle of the route, so it works well for the longest stop of the day.
Pacing Suggestions
Fuel and coffee
A short stop after about 24 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 54.4 miles from Castle Rock, WA, which is a good place for a longer meal and fuel stop.
Before the longest stretch
Fuel checkTop up before I 5 if your tank is already low. That segment runs about 103.8 miles.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Heads-up: tricky spots
5 of 135 decision points cluster between mile 105 and 107.5 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
8
105 mi into trip
|
~2h 5m in
Take the exit toward WA 518 West, I 405 North: Seattle-Tacoma International Airport, Bellevue
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 154A-B
Toward WA 518 West, I 405 North: Seattle-Tacoma...
9
105.1 mi into trip
|
~2h 5m in
Keep slight right at fork toward I 405 North: Renton, Bellevue
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Exit 154B
Toward I 405 North: Renton, Bellevue
8
106.8 mi into trip
|
~2h 7m 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
107.2 mi into trip
|
~2h 8m 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
107.5 mi into trip
|
~2h 8m 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
$22.77 one way
$45.54 round trip
$5.32/gal
25.4 MPG avg
38 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $5.58 | $23.88 | $47.76 |
| premium | $5.77 | $24.71 | $49.41 |
| diesel | $5.61 | $24.02 | $48.04 |
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$23
Meals
$25–$50
Total
$48–$73
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 38.1 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $11 in charging · 0 stops · 66% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 32.6 | 0 | $11.42 | $5.22 |
| Efficient EV | 27.2 | 0 | $9.52 | $4.35 |
| EV Truck/SUV | 43.5 | 0 | $15.23 | $6.96 |
Gas CO2
38 kg
EV CO2
13 kg (66% 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
Morning in Renton on Tuesday
Local time
8:22 AM
PDT
Current temp
67°F
Unavailable
Live forecast
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
1 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
2h 12m 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 highway-focused drive for most of this 108.8-mile route, with 97% of it spent on major interstates. You'll experience a significant uninterrupted stretch of 103.8 miles on I-5, offering a consistent cruising experience. As you transition to I-405 and then Rainier Avenue South, the character may shift slightly, but the overall feel remains that of efficient, high-speed travel. This isn't a route designed for leisurely scenic stops, but rather for covering ground effectively.
97% highway — fuel and pacing are the main things to plan.
17 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 103.8 mi on I 5.
How Hard Is This Drive?
9/10
This is a straightforward highway drive that stays mostly on I 5 and I 405. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 105 miles in.
Driving Effort
9/10
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 13 significant decision points across 108.8 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 105 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 105.1 miles: Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 106.8 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.
About the Cities
Arriving in Renton, WA
Full guide →Renton is a city in King County, Washington south of Bellevue and north of Kent. It is a quiet suburb of Seattle at the base of Lake Washington. Renton is primarily known as the site of the Boeing 737 plant, where the popular commercial jetliner is built. Renton is also notable for being the resting place of rock legend Jimi Hendrix. Its relatively inexpensive property prices make it a solid choice of stay while visiting Seattle, and the downtown area has many quiet charms of its own.
City content from Wikivoyage (CC BY-SA 4.0) and Wikidata (CC0).
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 2h 12m. Total distance: 108.8 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
2h 12m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (97%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 103.8 miles on I 5. 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.
Only with planning. This is a long drive for kids — consider splitting it into two days rather than pushing through. Dedicated rest areas are limited, so plan gas or food stops as your bathroom breaks.
The main spots that need attention: at 105 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 105.1 miles: Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 106.8 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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