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Ice Age Floods National Geologic Trail: fees, hours, camping and when to visit

Updated October 29, 2026. Based on National Park Service data. Published by Humblebee.

Entrance fee
None[1]

Ice Age Floods National Geologic Trail is part of the U.S. National Park System and spans Washington, Oregon, Idaho and Montana[2]. NPS lists it as a fee-free park, so there is no entrance fee[1].

Entrance fees and passes

The National Park Service lists no entrance fee for Ice Age Floods National Geologic Trail[1]. Some tours, campgrounds or permits inside a park can still have their own fees.

When to visit and hours

The trail is a set of sites run by many different partners, so there is no single set of hours[3]. Hours and seasons differ from one site to the next, so check each site you plan to visit[3]. Weather also differs because the sites cover four states[4]. NPS suggests checking the forecast for the region you will be in[4]. Confirm details on the official NPS page before you go.

Pets and dogs

Under the national NPS pet rule, pets must be crated, caged or on a leash no longer than six feet where they are allowed[5]. Pets are not allowed in public buildings or on designated swimming beaches, with service animals excepted[5]. Each park can close more areas to pets, so check the site you are visiting[5].

Before you go

Questions people ask

Is there an entrance fee for Ice Age Floods National Geologic Trail?
NPS lists it as a fee-free park, so there is no entrance fee[1].
What are the hours?
Hours and season vary from site to site, so check each site[3].
Are dogs allowed?
Where pets are allowed, the national NPS pet rule requires a leash no longer than six feet or a crate or cage[5]. Park areas can be closed to pets, so check each site[5].
What activities does NPS list?
NPS lists guided tours, self-guided walking tours, self-guided auto tours and a Junior Ranger Program[6].

Facts and sources

  1. NPS lists Ice Age Floods National Geologic Trail as a fee-free park: there is no entrance fee. National Park Service
  2. Ice Age Floods National Geologic Trail is a unit of the U.S. National Park System (designation: National Geologic Trail) in Washington, Oregon, Idaho and Montana. National Park Service
  3. Operating hours, Ice Age Floods National Geologic Trail: The Ice Age Floods National Geologic Trail is a collection of sites operated and owned by a variety of partners. , Hours of operation and season will vary from site to site. Please check each... National Park Service
  4. NPS weather and seasons overview for Ice Age Floods National Geologic Trail. National Park Service
  5. National Park Service rule 36 CFR 2.15: where pets are allowed they must be crated, caged or on a leash no longer than six feet at all times, and pets are not allowed in public buildings, on public transportation or on designated swimming beaches (service... eCFR, 36 CFR 2.15
  6. Activities NPS lists for Ice Age Floods National Geologic Trail: Guided Tours, Self-Guided Tours - Walking, Self-Guided Tours - Auto, Junior Ranger Program. National Park Service

Fees and hours are what NPS lists in its data at the snapshot date. They change: tell readers to confirm on the official park page before a trip. Visits are NPS recreation visits (counted entries, not unique people). Use them only for this park's own months and years, never to rank parks. Campground list and site counts come from NPS and Recreation.gov records. Count fields can differ slightly between the two. The pet rule is the national baseline (36 CFR 2.15). The park may close more areas to pets. Do not claim specific trails allow dogs unless a fact says so.