About Trevor
The path to becoming a ski guide is not always a linear one. For Trevor Kostanich, a longtime Snoqualmie Pass local, the route began with early employment as a ski instructor at Alpental. Utilizing a civil engineering degree, Trevor got a fortuitous offer to manage the planning department for The Summit at Snoqualmie and even had a stint as the ski school director when he was directing on-mountain operations. A career arc as a mountain planner on Snoqualmie Pass allowed idyllic touring days in the local zone. Through three season-long sabbaticals in Jackson Hole, Valdez, Alaska and the Kullu Valley in the Indian Himalaya, Trevor learned he wanted to professionally share his love of moving safely through snowy mountains. Trevor started guiding in 2010 and became a certified ski guide through the AMGA in 2018.
Trevor sharpened his guiding skills locally for Pro Guiding Service and shared his high route knowledge as co-author of Washington’s Backcountry Ski & Snowboard Routes. He has guided hundreds of rewarding days locally in the complex, world-class terrain of the Cascades, as well as in Whistler’s Coast Range, BC’s Selkirks, and the towering peaks of Alaska’s Thompson Pass. Trevor is widely respected in the ski mountaineering community for envisioning and completing the first continuous ski traverse from Snoqualmie Pass to (almost) the Canadian border, a 34-day high route he enjoyed in partnership with Forest McBrian. He's also summited then skied all five Washington volcanoes in five consecutive days with photographer Scott Rinckenberger as well as completed the first ski descent off the summit of Mt. Si with Peter Avolio and Dave Jordan.
Trevor believes in the importance of continuous learning and positive experiences with a bias toward outcomes over objectives. His personal passion for exploring new terrain steers his style toward memorable adventures in the mountains, rather than just repeating the same old lines. He is excited sharing the aesthetic awe of high routes and summit descents during springtime in the Cascades.
Trevor values sustainability, access to public lands for recreation, and has an affinity for community resource management, which sparked a term of public service on the North Bend City Council.