ElevationAscent: 73' 22 m
Descent: -59' -18 m
High: 598' 182 m
Low: 567' 173 m
GradeAvg Grade: 3% (2°)
Max Grade: 9% (5°)
Current trail conditions
Popular runs nearby
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Add details to help others plan their adventure.
“The main entry into Lake Sawyer's trail network, leading visitors to a wide variety of singletrack options.”— Brendan Ross
The turnoffs to area trails begin almost immediately, and this is a good place to intentionally get lost on a run for a while. Most are signed, but signs here are often a little harder to see than in Black Diamond Open Space to the east. Most signage are vertical and posted about eight to ten feet up on a tree set back a bit from the entrance, so look up.
After passing Old Railroad Grade, Mainline narrows to a singletrack and the rocks ease up just a little (but not much). Hang right at the fork where Mainline crosses Lake Sawyer RR Company, named after an old area railroad cutting directly through the trails, and descend a short here. You'll start feeling the humidity off the area's water features at the bottom as Mainline continues to pass turnoff after turnoff. Generally, going right will put you deeper into the system, and left heads back towards the highway. It's mostly flat from here until the end.
Most of the trail is well-covered and shady, though you'll pass through a small clearing at the southern end of Lake Sawyer RR Company. Continue ahead as the trail slowly curves to the east and passes through an open air segment just before ending at Old Railroad Grade opposite Mistress. As mentioned earlier, the sign on this end is set back from the intersection a bit. Continuing straight can make a nice short loop back to the parking lot, or turn south to continue exploring.
Land Manager: King County Parks