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A 100-mile Green Mountain test for ultrarunners
Start the Infinitus 100 Miler at Silver Towers Camp in Ripton on Friday of Memorial Day weekend, with 100 rugged miles through Green Mountain terrain.
Event details
The Infinitus 100 Miler at Silver Towers brings Memorial Day weekend focus to Ripton, Vermont, with a 100-mile loop that starts and finishes at Silver Towers Camp. You step straight from camp into the Green Mountain National Forest, linking rugged singletrack with forest roads and long, committed climbs. We treat this race as a true test of self-reliance, where vertical gain and distance matter as much as the remoteness, and your decisions count.
Expect a calm, serious atmosphere that still feels communal, with elite ultrarunners lining up beside disciplined first-timers. The early Friday start sets the tone, then the course steadily turns technical underfoot and demanding on the climbs. Your defining hours often come after dark, when you manage pace, nutrition, and navigation through the night in pursuit of the 48-hour cutoff. Even with a remote course, the camp anchors the weekend with shared meals, familiar faces, and steady, practical support.
Registration runs through UltraSignup, with pricing typically starting around $250, and the limited field means the 100-mile entry can sell out well ahead of race week. Plan to arrive Thursday for check-in and to get comfortable with the setting before the start. Pack for variable Vermont weather, including waterproof layers and a reliable headlamp setup for overnight running, plus electrolytes and calorie-dense food since some remote aid stops are simple. If you can, bring a crew for accessible points, and consider trekking poles to manage the elevation.
For lodging, you can stay on-site with basic camping or dorm-style rooms for a small fee, keeping you close to the start and the race’s center of gravity. If you prefer more amenities, book in Ripton or nearby Middlebury, or choose a vacation rental via Lake.com for a quieter recovery base. Note that you generally need proof of a completed 50-mile race or similar to qualify, and pets are typically not allowed on Silver Towers Camp property during the event.
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