Alluvial Fan Trail (RMNP) (Estes Park)

Alluvial Fan Trail (RMNP) in Estes Park: best for ages 0-2, 3-5, 6-8, 9-12, 13-17; No site fee — RMNP entrance pass required (standard pass $15–$35 per vehicle; RMNP annual pass $70).

AddressAlluvial Fan, Endovalley Road — 2 miles west on Hwy 34 from the Fall River Entrance Station, then north on Endovalley Rd (0.75 miles to the East lot, 1 mile to the West lot), Rocky Mountain National Park, Estes Park, CO 80517 (no street address published by NPS)

HoursOpen year-round as a trail; no gated hours published. Endovalley Road access is seasonal in practice — check road status before a winter visit

PricesNo site fee — RMNP entrance pass required (standard pass $15–$35 per vehicle; RMNP annual pass $70)

Price notesNPS publishes the standard pass as a $15–$35 range and does not break out the 1-day vs 7-day vehicle price on its fees page; a pass is required at all times. Children under 16 do not need an individual pass when entering on foot or bicycle. In the 2026 season a standard timed-entry reservation was also required 9am–2pm daily, May 22–Oct 12 ($2 processing fee, Recreation.gov only — not sold at entrance stations or visitor centers); the 2027 schedule had not been published at verification (Nov 2, 2026).

Age notesNPS calls this 'a great trail for families': a gentle stroll with views of the Alluvial Fan, the Roaring River, Horseshoe Falls, the Mummy Range and Endovalley, and interpretive signs explaining the 1982 Lawn Lake dam breach that created the boulder field.

Suggested timeAbout 1.5 hours

AccessibilityNPS: reconstructed in 2020, the trail to the Alluvial Fan was designed to be fully accessible from the WEST parking lot, meandering up to a 56-foot bridge crossing the Roaring River. The east-side approach has a steep section (slope exceeds 19% in one short stretch), so mobility-device users should use the west lot.

ParkingParking at the West and East Alluvial parking areas (NPS); a restroom is off the west parking area

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Venue details last verified October 31, 2026 against official sources. Hours and prices change — check the official site before you go. FamilyDay AI is a free planning tool for parents; we list only facts we have verified, and we never invent ratings or reviews.

Alluvial Fan Trail (RMNP) — Estes Park, Colorado

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