Origin
Seattle, WA
Night in Seattle on Thursday
Local time
10:40 PM
PDT
Current temp
49°F
Unavailable
Live forecast
Trip from Seattle, WA to Ahtanum, WA
Compiled by the Trip.ovh editorial team · Last recalculated Apr 17, 2026 · Methodology
Drive Time
2h 58m
Distance
150.8 mi
243 km
Drive Score
9/10
Great drive
Same Day?
Yes, doable
Fuel Cost
$32
one way
EV Charging
Unknown
Best Time to Leave
4 AM
2h 47m
★
6 AM
2h 59m
8 AM
3h 21m
10 AM
3h 6m
12 PM
3h 4m
3 PM
3h 8m
5 PM
3h 20m
8 PM
2h 52m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Seattle, WA
Wikimedia Commons
Ahtanum, WA
Jack Davis
Trip Overview
The drive from Seattle, WA to Ahtanum, WA covers 150.8 miles and takes about 2h 58m behind the wheel. This route is realistic as a one-day drive if you keep your stops efficient.
The route leans on Mount Baker Ridge Tunnel, US 97, North 40th Avenue for much of the mileage, and the overall profile is turn-heavy local drive. The longest uninterrupted segment is about 107 miles on Mount Baker Ridge Tunnel. At current regular gas prices, budget about $31.56 one way before food or hotel costs.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Break Rhythm
1 planned break
A short stop every 2 to 3 hours is enough for this drive.
Midpoint
75.4 miles from Seattle, WA
A natural place for your longest stop of the day , about 1h 26m into the drive .
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 2h 58m. Total distance: 150.8 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
2h 58m drive, comfortable solo distance.
Scenic Drive
Turn-heavy local drive route profile.
Drive Character
Expect a 2h 58m drive with frequent turns across 150.8 miles of local and secondary roads.
This route has more turning and local-road decision points than a simple highway run.
There are about 25 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
Mount Baker Ridge Tunnel is the longest continuous segment at about 107 miles.
How Hard Is This Drive?
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 0.1 miles in near Spring Street.
Driving Effort
10/10
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 20 significant decision points across 150.8 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 0.1 miles (Spring Street): Lane positioning matters here; at 1 miles (I 5): Highway fork - watch signs carefully. Multiple destination signs - pick the right one; at 1.1 miles: Highway fork - watch signs carefully. Multiple destination signs - pick the right one.
Critical Maneuvers
5 of 20 key pointsThese are the spots where you need to pay the most attention. Preview them before you drive.
7
0.1 mi into trip
|
~0m in
|
Spring Street
Turn right onto Spring Street
Lane positioning matters here
Use the right lane.
6
1 mi into trip
|
~2m in
|
I 5
Keep slight left at fork onto I 5 toward I 90 East, I 5 South: Bellevue, Portland
Highway fork - watch signs carefully. Multiple destination signs - pick the right one
Toward I 90 East, I 5 South: Bellevue, Portland
6
1.1 mi into trip
|
~2m in
Keep slight left at fork toward I 90 East: Bellevue, Spokane
Highway fork - watch signs carefully. Multiple destination signs - pick the right one
Toward I 90 East: Bellevue, Spokane
7
109.4 mi into trip
|
~2h 4m in
|
US 97
Take the exit onto US 97 toward I 82 East, US 97 South: Yakima
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.
Toward I 82 East, US 97 South: Yakima
7
149.4 mi into trip
|
~2h 55m in
|
Ahtanum Road
At end of road, turn right onto Ahtanum Road
Lane positioning matters here
Use the right lane.
Main Roads
| Road | Distance | Duration |
|---|---|---|
| Mount Baker Ridge Tunnel | 107 mi | 1h 59m |
| US 97 | 31.3 mi | 34m |
| North 40th Avenue | 3 mi | 6m |
| US 12 | 1.8 mi | 2m |
| West Washington Avenue | 1.7 mi | 3m |
| Ahtanum Road | 1.3 mi | 2m |
| I 90 | 1 mi | 1m |
| South 64th Avenue | 0.9 mi | 1m |
Longest stretch:
Mount Baker Ridge Tunnel
— 107 mi, about 1h 59m
Turn-by-Turn Driving Directions
Step-by-step road directions between Seattle, WA and Ahtanum, WA.
1
Start on this road
31 ft
·
7 sec
·
this road
2
Turn left onto Madison Street
204 ft
·
11 sec
·
Madison Street
3
Turn right onto 4th Avenue
308 ft
·
14 sec
·
4th Avenue
4
Turn right onto Spring Street
0.1 mi
·
26 sec
·
Spring Street
Use the right lane.
5
Take the ramp
0.2 mi
·
28 sec
Toward I 5 South: Portland
6
Continue on I 5
0.6 mi
·
1 min
·
I 5
Use the left lane.
7
Keep slight left at fork onto I 5
147 ft
·
2 sec
·
I 5
Toward I 90 East, I 5 South: Bellevue, Portland
8
Keep slight left at fork
0.4 mi
·
54 sec
Toward I 90 East: Bellevue, Spokane
9
Merge onto I 90
1.0 mi
·
1 min
·
I 90
Use the straight / slight right lanes.
10
Keep slight left at fork onto I 90
107 mi
·
1 hr 59 min
·
Mount Baker Ridge Tunnel
Use the straight / slight right lanes.
11
Take the exit onto US 97
31 mi
·
34 min
·
US 97
Toward I 82 East, US 97 South: Yakima
Use the straight / slight right lanes.
12
Take the exit
314 ft
·
4 sec
Toward US 12 west, North 1st Street
13
Keep slight right at fork
0.3 mi
·
25 sec
Toward US 12 west, North 1st Street
14
Merge onto US 12
1.8 mi
·
2 min
·
US 12
15
Take the exit
0.6 mi
·
1 min
Toward North 40th Avenue, Fruitvale BOulevard
16
Continue on North 40th Avenue
3.0 mi
·
6 min
·
North 40th Avenue
17
Turn right onto Loren Place
368 ft
·
12 sec
·
Loren Place
18
Continue on South 42th Avenue
0.1 mi
·
27 sec
·
South 42th Avenue
19
At end of road, turn right onto West Washington Avenue
1.7 mi
·
3 min
·
West Washington Avenue
20
Turn left onto South 64th Avenue
0.9 mi
·
1 min
·
South 64th Avenue
Use the left lane.
21
At end of road, turn right onto Ahtanum Road
1.3 mi
·
2 min
·
Ahtanum Road
Use the right lane.
22
Turn right onto South 84th Avenue
353 ft
·
17 sec
·
South 84th Avenue
23
Turn left onto Aspen Road
362 ft
·
14 sec
·
Aspen Road
24
Turn right onto South 85th Avenue
109 ft
·
3 sec
·
South 85th Avenue
25
Arrive at destination
South 85th Avenue
Trip Plan
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.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 75.4 miles from Seattle, WA, or about 1h 26m into the drive.
The longest continuous stretch on this route runs about 107 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 33 miles or 38m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 75.4 miles or 1h 26m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 2h 20m
Traffic, exits, and arrival timing usually matter more near Ahtanum, WA than in the middle of the route.
Before You Leave
+
Open the route before leaving Seattle, 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 Seattle, WA
This is one driving day of about 150.8 miles and 2h 58m.
Your first comfortable stop window is around 33 miles from Seattle, 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 Mount Baker Ridge Tunnel for about 107 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 75.4 mi from Seattle, WA · 1h 26m into the drive
Mid-route town
Meal stop
75 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 33 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 75.4 miles from Seattle, WA, which is a good place for a longer meal and fuel stop.
Before the longest stretch
Fuel checkTop up before Mount Baker Ridge Tunnel if your tank is already low. That segment runs about 107 miles.
Arriving in Ahtanum, WA
The final approach into Ahtanum, WA usually feels slower than the middle of the drive, so avoid planning your tightest schedule at the very end.
Try to arrive with enough fuel left to skip an immediate station stop unless you already know the area around Ahtanum, WA.
After long uninterrupted mileage, take five minutes before the last urban segment to reset and refocus on exits, merges, and city traffic.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Fuel & Cost
Regular Gas
$31.56 one way
$63.12 round trip
$5.32/gal
25.4 MPG avg
53 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $5.58 | $33.10 | $66.20 |
| premium | $5.77 | $34.24 | $68.49 |
| diesel | $5.61 | $33.29 | $66.59 |
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$32
Meals
$25–$50
Total
$57–$82
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 52.8 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $16 in charging · 0 stops · 66% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 45.2 | 0 | $15.83 | $7.24 |
| Efficient EV | 37.7 | 0 | $13.20 | $6.03 |
| EV Truck/SUV | 60.3 | 0 | $21.11 | $9.65 |
Gas CO2
53 kg
EV CO2
18 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
Ahtanum, WA
Night in Ahtanum on Thursday
Local time
10:40 PM
PDT
Current temp
39°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
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
2h 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.
Frequently Asked Questions
The drive from Seattle, WA to Ahtanum, WA covers 150.8 miles and takes about 2h 58m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are Mount Baker Ridge Tunnel, US 97, North 40th Avenue. Expect a mix of highway and local road driving.
This is a comfortable same-day trip.
The midpoint is about 75.4 miles from Seattle, WA. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $31.56 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
Leave by 9 AM and you'll arrive before lunch. Even a 4 PM departure gets you there before dark in summer.
Plan about 1 meaningful break for fuel, food, or rest. A short stop every 2 to 3 hours is enough for this drive.
This is a demanding drive. With 20 significant decision points across 150.8 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.
The main spots that need attention: at 0.1 miles (Spring Street): Lane positioning matters here; at 1 miles (I 5): Highway fork - watch signs carefully. Multiple destination signs - pick the right one; at 1.1 miles: Highway fork - watch signs carefully. Multiple destination signs - pick the right one.
The route from Seattle, WA to Ahtanum, WA does not surface many named destination signs beyond the main corridor.
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