How far is Black Diamond, WA from Seattle, WA?
The driving distance from Black Diamond, WA to Seattle, WA is about 33.2 miles (53.4 km), with a travel time of about 00h 48m by car.
- The straight-line flight distance is about 25.7 miles (41.3 km).
- For a round trip, plan for roughly 01h 36m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM PDT.
Reverse, save, or send this route
This route works well as a day trip with time at the destination. Copy the route link, send it to another device, or print a clean version before you head out.
This route works well as a day trip with time at the destination.
Flight Distance
Driving Distance
Gas Cost Calculator
Leave and Arrive Planner
Pick a departure time to see your estimated arrival and same-day return window.
Drive time stays fixed at 00h 48m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
You are leaving earlier than the recommended window, which gives you extra margin for breaks and traffic.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
The second most populous city in King County, Washington.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Chance Light Rain
Chance Light Rain
Driving Route Map
The map below follows the saved road route between Black Diamond and Seattle.
Turn-by-Turn Driving Directions
Step-by-step road directions between Black Diamond and Seattle.
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1
Start on Lawson Street
18 m · 4 sec · Lawson Street
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2
Turn right onto 3rd Avenue
2963 ft · 1 min · 3rd Avenue
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3
Enter the roundabout and take exit 1 toward 3rd Avenue
18 m · 1 sec · 3rd Avenue
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4
Exit the roundabout onto 3rd Avenue
1185 ft · 30 sec · 3rd Avenue
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5
Enter the roundabout and take exit 1 toward 3rd Avenue
69 m · 11 sec · 3rd Avenue
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6
Exit the roundabout onto 3rd Avenue
1.1 km · 1 min · 3rd Avenue
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7
Continue on Maple Valley Black Diamond Road Southeast
2 mi · 3 min · Maple Valley Black Diamond Road Southeast
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8
Enter the roundabout and take exit 1 toward Maple Valley Black Diamond Road Southeast
38 m · 3 sec · Maple Valley Black Diamond Road Southeast
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9
Exit the roundabout onto Maple Valley Black Diamond Road Southeast
1.4 km · 2 min · Maple Valley Black Diamond Road Southeast
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10
Enter the roundabout and take exit 2 toward Maple Valley Black Diamond Road Southeast
32 m · 2 sec · Maple Valley Black Diamond Road Southeast
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11
Exit the roundabout onto Maple Valley Black Diamond Road Southeast
2186 ft · 41 sec · Maple Valley Black Diamond Road Southeast
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12
Enter the roundabout and take exit 2 toward Maple Valley Black Diamond Road Southeast
34 m · 2 sec · Maple Valley Black Diamond Road Southeast
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13
Exit the roundabout onto Maple Valley Black Diamond Road Southeast
1.8 mi · 3 min · Maple Valley Black Diamond Road Southeast
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14
Continue on Renton Maple Valley Road Southeast
5.5 mi · 9 min · Renton Maple Valley Road Southeast
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15
Continue on Southeast Renton Maple Valley Road
1.6 mi · 2 min · Southeast Renton Maple Valley Road
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16
Continue on Maple Valley Highway
4 mi · 7 min · Maple Valley Highway
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17
Take the ramp left toward I 405 South: Tacoma
1112 ft · 31 sec
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18
Merge slight left
3.5 mi · 4 min
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19
Take the exit slight right toward I 5 North: Seattle, Southcenter Boulevard
973 ft · 14 sec
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20
Keep slight left to continue on I 5 North: Seattle
1118 ft · 16 sec
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21
Merge slight left
10.8 mi · 13 min
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22
Take the exit slight left toward Seneca Street
1359 ft · 36 sec
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23
Turn left onto Seneca Street
98 m · 18 sec · Seneca Street
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24
Turn left onto 5th Avenue
615 ft · 27 sec · 5th Avenue
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25
Turn right onto Madison Street
34 m · 9 sec · Madison Street
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26
Turn left
9 m · 2 sec
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27
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Black Diamond and Seattle.
Turn-heavy local drive
The route has frequent decision points for its length, so lane choice and turn timing will matter more than cruising speed.
I 5 North
Merge slight left
10.8 mi · 00h 13m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A comfortable day-trip route
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
Chance Light Rain leaving Black Diamond and Chance Light Rain near Seattle.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Black Diamond to Seattle?
The road trip is about 33.2 miles (53.4 km) and usually takes 00h 48m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
What is the halfway point on this route?
Renton is a useful midpoint, sitting about 16.5 miles from Black Diamond and 16.7 miles from Seattle.
How much longer is the road route than the straight-line distance?
The direct path is about 25.7 miles (41.3 km), while the road route adds roughly 7.5 extra miles because roads do not follow the straight air line.
When is the best time to leave for this route?
A good departure window is usually 8:00 AM to 10:00 AM PDT. If you want a more comfortable same-day return, try to leave by 4:54 PM PDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $6.12 one way or $12.25 round trip. Estimated CO2 is about 10.4 kg one way.
What should you check before leaving?
Before you leave, expect Chance Light Rain around Black Diamond and Chance Light Rain near Seattle.
Stop Ideas Near Renton
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Tukwila Community Center
Auburn Building Permits
City of Auburn
Auburn Community & Event Center
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Renton.
Tukwila station
King Street Station
Seattle (Ferry - Pier 69), Washington
Tacoma Dome Station
Flight Path Map
This map shows the direct air route between Black Diamond and Seattle. Straight-line distance: 25.66 mi (41.3 km).
#1 Black Diamond
City in King County, Washington, United States
| Population | 5,403 |
| Coordinates | 47.3087100, -122.0031700 |
| Altitude | 199 |
| Country | United States |
#2 Seattle
The eighteenth most populous city in the United States and the center of the Seattle metropolitan area.
| Population | 769,714 |
| Coordinates | 47.6062100, -122.3320700 |
| Altitude | 56 |
| Country | United States |
End: (-122.332143, 47.606309)
Estimated Travel Time
Distance: 53 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 06m |
| 40 mph (64.37 km/h) | 00h 49m |
| 50 mph (80.47 km/h) | 00h 39m |
| 60 mph (96.56 km/h) | 00h 33m |
| 70 mph (112.65 km/h) | 00h 28m |
| 80 mph (129 km/h) | 00h 24m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $5.23 | $6.12 | $12.25 |
| Mid-grade | $5.57 | $6.51 | $13.03 |
| Premium | $5.77 | $6.75 | $13.50 |
| Diesel | $5.47 | $6.40 | $12.79 |
Assumes 8.3 L/100 km (about 28.3 MPG). CO2 is an estimate and varies by vehicle, fuel blend, traffic, and terrain.
Prices in Washington · Apr 19, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.