STP Transportation Details


The Kaiser Permanente Seattle to Portland Bicycle Classic presented by Alaska Airlines is a one-way ride from Seattle, WA, to Portland, OR. Every rider needs a plan for getting to the start line on Saturday morning. Once at the finish line, there are multiple services to help you and your bike get back to the Seattle start line at the University of Washington.

All services are subject to limited availability. Prices may increase closer to the day of the event.

Important deadline: June 24, 2023 is the last day to purchase bus tickets to return to Seattle after the ride.

Pre-Ride Bus

Arranged by Portland Bicycling Club, this service delivers riders and bikes to the University of Washington dorms in Seattle on the Friday before STP. Bus tickets and parking can be purchased on Order early -- space is limited. See Portland Bicycle Club for more details about departure and arrival times, locations, and contact information.

Parking at Start Line

If you're driving to the start line, you can park your vehicle in the E-18 parking lot at UW. The lot opens on Friday and closes on Monday.

Purchase your parking pass in advance online or on Friday during early bag drop.

  Opens Closes
Friday 6 p.m. --
Saturday 4 a.m. --
Monday -- 5 p.m.

Post-Ride Bus 

Bus & Bike Transportation - Combo Package

  • Transportation for you by bus and for your bike by truck.
  • Your choice of Saturday, Sunday or Monday returns by bus.
  • Tandem riders must purchase two combo tickets.
  • Bikes arrive in Seattle on Sunday and Monday.
  • Limited standby tickets available in Portland. 
  • Important deadline: June 24, 2023 is the last day to purchase bus tickets to return to Seattle after the ride.

Bike-Only Transportation 

  • Transportation for only your bike back to Seattle.
  • Tandem riders must purchase two bike-only tickets.
  • Bikes arrive in Seattle on Sunday and Monday.
  • Need to upgrade from bike-only to the combo bus & bike transportation package? Purchase the bike & bus package and then email to request a refund of the bike-only ticket, minus a $5 handling fee.

Bike Box Transport

Intended for riders flying out of Portland after the ride, transporting bikes in boxes via Amtrak, or otherwise. One-way transportation for your personal bike box from the start line in Seattle to the finish line in Portland.

Drop off your bike box at the start line in Seattle and pick it up at DoubleTree Hotel at the Portland finish line.

Post-Ride Bike Storage

  • Purchase in advance during registration or when you pick up your bike.
  • Charged to any bike left at the UW bike corral after 7 p.m. on Monday.
  • This is a courtesy and the cost covers the truck, labor and storage.

Cascade Bicycle Club does not provide any insurance to cover damages occurred in transport. Bikes are transported in trucks and covered in moving blankets. If you have concerns, we recommend you make other arrangements.

No refunds or replacements will be given for unused or lost tickets.

Bus & Bike Loading at Finish Line


When should I load my bike? As soon as possible at the finish line to avoid transportation delays. Buses often arrive in Seattle before the bike trucks do. All bike trucks and buses load on NE 9th Ave, on the west side of the DoubleTree Hotel. Saturday and Sunday are the only days that you can load your bike. If you are returning to Seattle on a Monday morning bus, you must load your bike on Sunday. There will be a designated "Monday" arrival truck.

What do I need to pick up my bike in Seattle? Leave your bike number affixed to your bike; you or someone with a your rider bib number (or picture of it) will need this to pick it up in Seattle. 

  Start Loading Final Departure Seattle Arrival
Buses 8 p.m. 9:15 p.m. 11:30 p.m. Saturday or later
Bike Trucks 5 p.m. 9 p.m. 11 a.m. Sunday

Buses depart as they fill and will not wait for riders. There are only two buses on Saturday and the last bus leaves at 9:15 p.m. sharp.

  Start Loading Final Departure Seattle Arrival
Buses 1 p.m. 7 p.m. 3+ hrs.Traffic dependent
Bike Trucks 12:30 p.m. 7 p.m. 3+ hrs.Traffic dependent

You do not have to load the bus at the same time that you load your bike. The later you load your bike, the longer you wait for it in Seattle. Bike trucks will often not arrive at the University of Washington bike corral until after 9 p.m.

  Start Loading Final Departure Seattle Arrival
Buses 9 a.m. 9:30 a.m. 3+ hrs.Traffic dependent
Bike Trucks Not available Not available Not available

Load your bike on Sunday on the truck marked Monday. Buses load in the breeze way of the DoubleTree Hotel. Buses depart when full.

Bike Pickup in Seattle

Bike Corral at UW Seattle

(Location) University of Washington, E-18 parking lot (same as start line)

Day Pickup Hours
[Saturday Not available]
Sunday 11 a.m. to midnight (or last truck arrival)
Monday 11 a.m. to 7 p.m.

Use the southern-most entrance to retrieve your bike and avoid paying for the lot. Present your rider bib (or photo) and we'll match you with your bike.

Any bike left in the corral at 7 p.m. on Monday will be transported to Cascade Bicycle Club.


Bike Storage at Cascade Bicycle Club

(Location) 7787 62nd Ave NE, Seattle, WA 98115

Day Pickup Hours Price
Tues. 10 a.m. - 5 p.m. $20
Wed. 10 a.m. - 5 p.m. $40
Thurs. 10 a.m. - 5 p.m. $60
Fri. 10 a.m. - 5 p.m. $80

After Friday by appointment only by calling (206) 522-3222.

Bicycle Concierge

Need to get your bike to Seattle? Use to ship your bike and gear there and back and save time, money and hassle instead of flying with your bike. offers convenient, reliable and affordable shipping. With’s Best Way Guarantee, you are guaranteed that your bike will arrive on schedule, and you get great customer support from fellow cyclists. 

Montlake Bicycle Shop

Montlake is a long-time partner of STP and conveniently located close to the UW start line. They offer shipping/building services and rent bikes. If you are looking to ship your bike and have it built for you, Montlake is the spot!  Contact:, (206) 329-7333.