Hartmann Inline Rink: A Nonprofit Rink Sitting Right on the 80301/80304 Line The mailing address at 4800 28th Street carries a Boulder, CO 80301 zip, per the site's own directory listing on AboutBoulder.com — not 80304 — but it sits close enough to North Boulder's own zip line that it belongs in the neighborhood's …

What Walk & Bike to Work Day Is — and When in 2026 On Wednesday, June 24, 2026, from 6:30 to 9:00 a.m., Boulder ran its biggest cycling morning of the year: Walk and Bike to Work Day. The 2026 event has passed; it returns each June as the headline event of Walk & Bike Month, a full June calendar of rides and walks …

Goose Creek Path: Following North Boulder's Hidden Waterway The trailhead at East Mapleton Park and Ball Fields, 2838 Mapleton Avenue looks like an unremarkable park entrance off a residential street — but step onto the path and you're at the western terminus of one of Boulder's most practical car-free corridors: the …

Wonderland Lake: The Reservoir That Became a Wildlife Sanctuary Standing on the earthen dam at the south end of Wonderland Lake on a clear morning, you are looking at the northern geographic anchor of the 80304 zip code — a shallow foothills reservoir that began as an irrigation impoundment in the early twentieth …