Walk the Snoqualmie Lake Trail approximately 2.7 miles and turn left on an unsigned unmaintained path just before crossing Martin Creek on a trail bridge. Steeply ascend about a mile and a half on a primitive unmaintained trail with windfall, brush and route-finding challenges to Martin Lake and a few nice camp spots. The Marten Lake Trail enters Alpine Lakes Wilderness and is an unmaintained fisherman's access trail. Climb steeply through old-growth forest until the trail levels out and offers views of surrounding mountains. The route is extremely brushy and very steep. Because of the heavy brush, this trail can be difficult to find and is not recommended for the inexperienced hiker.
From North Bend travel east on I-90 to exit 34. Turn north on Edgewick Road. In 0.6 mile turn right onto SE Middle Fork Road (Forest Service road 56). Stay on Forest Service road 56 for 12.2 miles just after the bridge crossing. Continue on the left fork to the Taylor River Road (Forest Service 5620). In another 0.4 mile, park at the gate. The trailhead is beyond the gate, across the Taylor River Bridge.
Hike Snoqualmie Lake Trail #1002 for 3.0 miles to the junction and take the left fork to the Marten Lake Trailhead (about 150 feet before the Marten Creek bridge crossing).