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 …

Boulder Reservoir: The City's Lake, Northeast of North Boulder Boulder Reservoir is a 700-acre lake on the plains northeast of Boulder. The City of Boulder owns and manages it. It stores water for drinking and for farm irrigation, and it is also the city's biggest place to swim, boat and fish. From North Boulder it is …