What's on in Rocky Mountain National Park (Rocky Mountains), United States through the year

Busy — Winter / Christmas break in United States, school holidays in 2 of the markets that fill it

Nothing new starts in January.

Quiet — travelers describe it as quiet

Nothing new starts in February.

Busy — Spring break in United States

Nothing new starts in March.

Shoulder season — an ordinary month

Nothing new starts in April.

Busy — Timed entry reservations

• Rule

  Timed entry reservations

  22 May – 18 Oct · usuallyBook earlyCrowded

  Two permits from late May to mid-October: one for the Bear Lake corridor between 5am and 6pm, one for the rest of the park between 9am and 2pm. They release in monthly batches and the popular days go in minutes. Source ↗

• Opening

  Trail Ridge Road season

  25 May – 15 Oct · usuallyTrail seasonClosures

  The highest continuous paved road in the country is ploughed open around Memorial Day and closed by the first serious October storm. Between those dates it can still shut for a day of snow in July. Source ↗

Peak crowds — Timed entry reservations, Summer peak

• Holiday

  Summer peak

  15 Jun – 20 AugSchool holidaysCrowded

  Nearly all of the park's four million visitors come in these ten weeks, and most of them want the same three trailheads. The park-and-ride shuttle on Bear Lake Road is full by eight. Source ↗

• Nature

  Tundra wildflowers

  25 Jun – 5 Aug · usuallyWildflowers & blooms

  The alpine tundra either side of Trail Ridge flowers for a few weeks in July, low to the ground and easy to miss from a car. It is the closest thing in the country to Arctic ground.

Still on: Timed entry reservations (22 May – 18 Oct (usually)), Trail Ridge Road season (25 May – 15 Oct (usually))

Peak crowds — Timed entry reservations, Summer peak

• Hazard

  Afternoon lightning season

  5 Jul – 5 Sep · usuallyMonsoon

  Storms build over the divide almost every summer afternoon and the tundra is the highest ground for miles with no shelter on it. The rule here is to be off the high trails by noon. Source ↗

Still on: Timed entry reservations (22 May – 18 Oct (usually)), Trail Ridge Road season (25 May – 15 Oct (usually)), Summer peak (15 Jun – 20 Aug), Tundra wildflowers (25 Jun – 5 Aug (usually))

Peak crowds — Timed entry reservations, Summer peak

Nothing new starts in August.

Still on: Timed entry reservations (22 May – 18 Oct (usually)), Trail Ridge Road season (25 May – 15 Oct (usually)), Summer peak (15 Jun – 20 Aug), Tundra wildflowers (25 Jun – 5 Aug (usually)), Afternoon lightning season (5 Jul – 5 Sep (usually))

Peak crowds — Timed entry reservations, Elk rut

• Nature

  Elk rut

  10 Sep – 20 Oct · usuallyRutting seasonCrowded

  Bulls bugle in the Moraine Park and Horseshoe Park meadows at dawn and dusk through the autumn, and the traffic jams that follow are managed by rangers. Keep well back; people get hurt most years. Source ↗

• Nature

  Aspens turning

  18 Sep – 8 Oct · usuallyAutumn colour

  The stands along Bear Lake Road and up in Kawuneeche Valley turn gold in the last ten days of September, usually a week before the elk rut peaks.

Still on: Timed entry reservations (22 May – 18 Oct (usually)), Trail Ridge Road season (25 May – 15 Oct (usually)), Afternoon lightning season (5 Jul – 5 Sep (usually))

Peak crowds — Timed entry reservations, Elk rut

Nothing new starts in October.

Still on: Timed entry reservations (22 May – 18 Oct (usually)), Trail Ridge Road season (25 May – 15 Oct (usually)), Elk rut (10 Sep – 20 Oct (usually)), Aspens turning (18 Sep – 8 Oct (usually))

Busy — Thanksgiving break in United States

Nothing new starts in November.

Busy — Winter / Christmas break in United States, school holidays in 2 of the markets that fill it

Nothing new starts in December.