A snow-encrusted trail cairn leads the way to the summit of Sunday River Whitecap in western Maine. Credit: Courtesy of Ron Chase

Sunday River Whitecap is one of the most unique mountain hikes in Maine. Rugged terrain, phenomenal views and a barren alpine summit provide a remarkable winter mountaineering experience.

Located on the northeastern end of the Mahoosuc Range in far western Maine, the 3,337-foot peak features a hike that has about 2,100 feet of elevation gain and a variety of trail conditions.

The Grafton Notch Loop Trail is the normal route to the summit. From Route 26 in North Newry, the 14-mile out-and-back trek is an arduous winter expedition. For about three decades, Chowderheads with the Penobscot Paddle and Chowder Society have been scaling Sunday River Whitecap via an esoteric 6-mile round-trip alternative route.

Scheduled to lead a mid-January chowder society winter mountain hike, Sunday River Whitecap was my choice. Unaware of snow depth in the Mahoosucs, a primary concern was to snowshoe or not to snowshoe. Full disclosure, for me, snowshoeing is a means to an end. If I can get to the top of a mountain without using them, that’s my preference. During my last Sunday River Whitecap outing, a companion and I toted snowshoes for the entire trip, never needing them. At my age, I’m pacing my arthritic joints, attempting to postpone their inevitable demise. Senselessly carrying added weight is a non-starter.

Several club members responded to my inquiry regarding snow levels in the Mahoosucs. Their reports indicated about 10 inches of snow accumulation could be anticipated and snowshoes were probably unnecessary. Our plan was to take them to the trailhead before making a final decision.

Six of us met in a clearing at the junction of routes 2 and 26 in Newry on a sunny, breezy winter day with temperatures in the low 20s. Since parking was expected to be limited at the esoteric trailhead, we masked and teamed up in pairs for the 9-mile drive north on Route 26 to an old dirt road on the left between Screw Auger Falls and Grafton Notch. A snowplow had cleared space sufficient for a few vehicles.

Inspection at the trailhead indicated the 10 inch snow prediction was accurate. As the snow had a very light consistency, our decision was settled: no snowshoes. Anticipating gusty winds and low temperatures above the tree line, we packed for extreme winter conditions. Everyone carried ice cleats, some wearing them from the outset.

Hikers ascend the north shoulder of Sunday River Whitecap in a dense conifer growth in western Maine. Credit: Courtesy of Ron Chase

Our intrepid band began the journey by crossing a bridge over Bear River before following the passageway as it rose steadily south. Just beyond the bridge, snowmobile Route 82 ITS joined from the right. For the first time in my experience, no snowmobile tracks were evident. Insufficient snow accumulation is the probable explanation.

Turning left, the gradient moderated as our team traveled easterly. About a mile from the trailhead, the start of what was formerly a bush whack was detected on the right. Due to occasional usage and some trail markings, a fairly obvious path has evolved that leads through a scattered conifer and hardwood forest. Persevering uphill for approximately a mile, we connected with Grafton Notch Loop Trail in Miles Notch.

After progressing southeasterly on the loop trail for a short distance, our tenacious group of mountaineers angled right and began climbing steeply south on the north shoulder of Whitecap in a dense conifer growth. Scrambling up a narrow gully amidst a consequential rock formation, we emerged onto the lower end of an extensive alpine zone where exceptional views of the northern Mahoosucs awaited us. Encountering frigid wind chills and sporadic icy footing, everyone donned parkas and ice cleats.

Climbers enjoy spectacular views of the northern Mahoosucs while descending Sunday River Whitecap. Credit: Courtesy of Ron Chase

A formidable topography of wind-swept, ice-covered surfaces and drifted snow, complicated by a labyrinth of patchy mountain scrub, confronted us. Trailfinding became much more problematic. Cautiously surmounting an icebound escarpment and approaching the summit cone, we were unable to locate critical trail cairns. Advancing directly up as safely as possible seemed our best strategy.

Doggedly persisting up the cone, we serendipitously observed a snow-encrusted cairn to our right. Back on the trail, we could easily discern the remaining route to the blustery summit and found shelter from the piercing gusts on the southwest side of the crest. There we enjoyed an overdue respite and much needed snacks.

Departing the summit, we passed two hikers. They were the only other alpine adventurers fortunate enough to experience dramatic Sunday River Whitecap on that glorious day.

Would snowshoes have been beneficial on the descent? I think so.

Ron Chase, Outdoors Contributor

The author of “The Great Mars Hill Bank Robbery” and “Mountains for Mortals – New England,” Ron Chase resides in Topsham. His latest book, “The Fifty Finest Outdoor Adventures in Maine” is...