11th Annual Spring into Green 5K/10K Run is set for September 19th Published on August 26, 2020 CHEYENNE – The Greater Cheyenne Greenway Foundation will host their annual “Spring into Green” event (rescheduled from this spring), a 5K Run/Walk and 10K Run on Saturday, September 19th. The health department has approved the event and it will be carefully managed to protect the public’s health and safety.