Elk, Thurston, and Mercer Traverse

Elk, Thurston, and Mercer Traverse is one of the big days out in Chilliwack, and it feels every bit of its 23+ km and 1500 m of gain. You tag three peaks, spend hours on a high ridge, and finish with legs that know they’ve worked. This is rated very difficult for a reason: long, steep sections, almost no water, and a full-day commitment that can easily stretch past 10 hours for most hikers.

The trail from the Elk Mountain trailhead climbs steadily through forest with lots of shade before breaking into open viewpoints with big looks over the Fraser Valley and the Cheam range. The crowds thin after Elk, and by the time you’re between Mount Thurston and Mount Mercer you’ll likely have the ridge mostly to yourself, aside from the odd ATV or truck on the FSR. Views are strongest around Elk and again if you poke around the slopes of Mercer; Thurston itself is more of a wooded bump with glimpses rather than a true summit panorama.

Recent reports on the Elk, Thurston, and Mercer Traverse say the path is well marked to Thurston, then becomes more overgrown and brushy heading down to the service road and up Mercer, with wet feet and soaked legs likely after rain or in lingering snow. Expect bugs and flies in summer, no reliable water, and the real possibility of bears and other wildlife, so bring extra water, snacks, and bear spray, and make noise in the meadows near the third peak. This route from Chilliwack is best from late spring to fall, but shoulder-season snow can mean postholing and route-finding issues, so check conditions, carry a headlamp, and be ready for a serious, committing outing.