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The Ice Age Trail's western start at Interstate State Park stands out as the gateway to a 1,200-mile journey tracing Wisconsin's glacial past, beginning amid the deepest potholes on Earth formed 12,000 years ago. This launch point in St. Croix Falls delivers raw geology—basalt cliffs, eskers, and the St. Croix River gorge—without the crowds of eastern segments. Hikers feel the pull of thru-hiking history here, as it's the traditional kickoff for end-to-end treks to Potawatomi State Park.
Core experiences include the Pothole Trail terminus loop, the 9-mile St. Croix Falls Segment with its river bluffs and nature preserves, and extended loops like Skyline Trail blending park paths with Ice Age markers. Activities span day hikes, birdwatching, and geology tours at the Ice Age Center. Nearby, paddle the St. Croix or explore Riegel Park for more esker views.
Spring through fall offers prime conditions with May-June wildflowers and September-October colors; summers stay mild at 70-80°F but bring bugs, winters suit snowshoers. Trails feature moderate elevation (200-400 ft gains) and wet crossings—prepare for mud. Download apps, carry the $11 park pass, and scout weather via NOAA.
St. Croix Falls thrives as the "City of Trails," with locals from the Ice Age Trail Alliance hosting volunteer events and trail magic like shuttles. Communities blend Norwegian heritage with outdoor ethos, fueling hiker pitstops at diners serving walleye. Insiders tip quiet riverbank campsites for stargazing post-hike.
Plan your start at Interstate State Park's Pothole Trail parking area, reachable via STH-35 south from St. Croix Falls. Book park entry vehicle sticker online in advance during peak weekends; Wisconsin residents pay $8 daily, non-residents $11 as of 2026. Time hikes for weekdays to dodge tour groups, and check Ice Age Trail Alliance maps for segment updates.
Pack layers for variable weather, as trails mix sun-exposed ridges with shaded valleys. Download offline GPS apps like AllTrails for navigation amid rock hops and stream crossings. Refill water at the park's Ice Age Center and notify someone of your itinerary given spotty cell service.