The Hood To Coast course consists of 36 legs; each team member runs three in rotation. The course is run primarily on paved roads and multi-use off-street trails, with small portions of the course on sidewalks and gravel roads. The legs vary in length from ; some legs are virtually flat, and others descend and/or ascend steep mountainous hills. Consequently, a runner or walker may total between . Teams in the full Hood To Coast Relay must complete the course within a 36-hour time limit. Teams start on Friday between 3:00 a.m. and 2:00 p.m. in staggered waves of approximately 15 teams every 5 minutes. Teams are seeded based on previous race pace times (extrapolated based on a specific deterioration factor over three legs, taking into account additional factors) for each team's submitted roster. Thus the flow of teams through the 35 exchange points and finish line remains relatively smooth, with all teams finishing the race by the closing time of 9 p.m. on Saturday. The course starts at
Timberline Lodge at the level of
Mount Hood, and proceeds down Timberline Road to
Government Camp. This first leg drops in elevation over about ; the next two legs from Government Camp to
Rhododendron have a combined elevation drop of over about . Runners proceed west along
U.S. Route 26 to the towns of
Sandy and
Gresham, where the route proceeds along the
Springwater Corridor Trail to the Sellwood neighborhood in southeast
Portland. The route then proceeds north along the paved Springwater/Willamette River Trail and crosses the
Tilikum Crossing bridge west into downtown Portland. After going over the Tilikum Crossing Bridge, runners proceed north along
Naito Parkway in downtown Portland along the west bank of the
Willamette River and onto
U.S. Route 30 to
St. Helens. From there onward, the route passes through hilly rural and sometimes unpaved backroads through the forested communities of
Mist and
Birkenfeld on the way to the beach finish line party in
Seaside. The Portland To Coast Walk Relay follows the last 24 legs (130 miles) of the course, starting from the Tilikum Crossing Bridge in downtown Portland. Each participant in the PTC Walk Relay walk two legs in rotation. ==Logistics and atmosphere==