Martha Lake Airport Park Mountain Biking Trails

A 28.76-acre property just north of Martha Lake and east of I-5. Park amenities include picnic shelter, youth softball field, two youth sports fields, skate park, and restrooms.

From 164th Avenue Southeast:
Turn north onto Meadow Road and follow to 146th Street Southwest
Turn right onto 146th Street Southwest and follow to park entrance on right

The Big Rock
The big rock in the park is one of the largest glacial erratic boulders in urban King, Snohomish, and Pierce counties. The retreating ice sheet dropped this massive rock at its current location about 12,000 years ago. It is a magnificent reminder of our region's recent glacial past.

An erratic is a piece of rock that has been eroded and transported by a glacier to a different area, then left behind when the ice melted. Glacial erratics give us information about the direction of ice movement and distances of transport. Glacial erratics can be any size from small pebbles to large boulders the size of a house.


The Skate Park
The skate park at Martha Lake Airport Park is the first in the county parks system. Much thanks goes to young Colton Heaverly who pleaded with the design team to include a skate park for neighborhood youth. Only 12-years old at the time Colton started his quest, he gave many impassioned speeches to the county planning team and community organizations and gathered large lists of signatures to support his requests. Now 19 years old, Colton is very pleased with the results.