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121

King County / Bus

Sound Transit, Metro Transit, City of Seattle - King County Metro 121 stops, route map and branches

121 · America/Los_Angeles

Selected branch: Downtown Seattle Via SR-509 · 14 stops.

121 route map and ordered stop list

The map follows the selected branch. Choose another direction or short turn above to inspect its own stops.

Burien Transit Center - Bay 5Sr 509 & S 128th StEast Marginal Way S & S Lucile StEast Marginal Way S & S Hudson StEast Marginal Way S & S Alaska StEast Marginal Way S & Diagonal Ave SEast Marginal Way S & S Idaho StAlaskan Way S & S Jackson StAlaskan Way & Columbia St3rd Ave & Madison St3rd Ave & Union St3rd Ave & Pine St3rd Ave & Virginia St3rd Ave & Bell StN ↑
Official route geometry
  1. 1. Burien Transit Center - Bay 5ID 52305 · Stop code 52305
  2. 2. Sr 509 & S 128th StID 47735 · Stop code 47735
  3. 3. East Marginal Way S & S Lucile StID 40801 · Stop code 40801
  4. 4. East Marginal Way S & S Hudson StID 40802 · Stop code 40802
  5. 5. East Marginal Way S & S Alaska StID 40804 · Stop code 40804
  6. 6. East Marginal Way S & Diagonal Ave SID 40806 · Stop code 40806
  7. 7. East Marginal Way S & S Idaho StID 40807 · Stop code 40807
  8. 8. Alaskan Way S & S Jackson StID 1561 · Stop code 1561
  9. 9. Alaskan Way & Columbia StID 1559 · Stop code 1559
  10. 10. 3rd Ave & Madison StID 548 · Stop code 548
  11. 11. 3rd Ave & Union StID 570 · Stop code 570
  12. 12. 3rd Ave & Pine StID 590 · Stop code 590
  13. 13. 3rd Ave & Virginia StID 600 · Stop code 600
  14. 14. 3rd Ave & Bell StID 605 · Stop code 605

Published directions and branches

Each stopping pattern has its own sequence. Occasional variants may have no trips on today’s date.

Downtown Seattle Via SR-50914 stops · 8 trips in the published feed · Pattern 243a8ebfa8b480ec6732e63a↗Burien Transit Center Via SR-50914 stops · 8 trips in the published feed · Pattern ca08507ded31c25f87280239↗

Additional stops on other branches

These stop records occur on another published variant of 121. Open a branch above for its ordered map and sequence.

3rd Ave & Bell St 400 ↗3rd Ave & Columbia St 481 ↗3rd Ave & Pike St 433 ↗3rd Ave & Seneca St 468 ↗3rd Ave & Virginia St 420 ↗Alaskan Way S & S Jackson St 1562 ↗Columbia St & Alaskan Way 1558 ↗East Marginal Way S & Diagonal Ave S 85062 ↗East Marginal Way S & S Alaska St 85064 ↗East Marginal Way S & S Hudson St 85066 ↗East Marginal Way S & S Idaho St 85059 ↗East Marginal Way S & S Lucile St 85067 ↗Sr 509 & S 128th St 85069 ↗

More Sound Transit, Metro Transit, City of Seattle - King County Metro travel information

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Published Sound Transit, Metro Transit, City of Seattle - King County Metro schedule

Imported Oct 24, 2026 · 04:36 UTC · Service dates 2026-08-29 through 2027-12-31. See data status

Schedule data published by Sound Transit, Metro Transit, City of Seattle - King County Metro. Feed discovery and cached source archives from MobilityData. Source details ↗