Yes, all guests aged 16 and older are required to hold a valid Colorado fishing license, even on a guided trip inside Rocky Mountain National Park. Licenses are not included in the trip price and must be purchased separately before your trip.
You can buy a Colorado fishing license online through Colorado Parks and Wildlife at cpw.state.co.us. The good news: Fly Fish Estes Park handles your RMNP timed-entry reservation for you when you book, so no separate park permit is needed on the day of your trip.
◆ Required age 16+ ◆ Buy at cpw.state.co.us ◆ RMNP reservation handled for you