# Boulder Cave Trail, United States: what it is and when to go > Boulder Cave Trail is a hiking trail in United States. Interests: Hiking. The best time to visit is April to October. In June there are 15 h 40 of daylight, and in December, 8 h 20. Here is what it is, where it lies, when to come, how to get there and what else is nearby to turn it into a trip. - Address: https://kokai.app/en/paises/america/estados-unidos/boulder-cave-trail/ - Reviewed on: 2026-10-08 - Language: en ## In a nutshell - **What it is:** Hiking trail · Hiking - **Where:** United States - **Best time:** April to October. - **Nearest airport:** SFO San Francisco, 1,045 km as the crow flies - **Trail network:** Regional - **Run by:** United States Department of Agriculture Forest Service - **Coordinates:** 46.95928, -121.08989 ## What it is and where Boulder Cave Trail is a hiking trail in United States. Its coordinates are 46.95928, -121.08989; the nearest main airport is San Francisco International Airport (SFO, San Francisco), 1,045 km as the crow flies. How to get around United States (train, car, bus) is covered in [its country guide](https://kokai.app/en/paises/america/estados-unidos/#moverse). - [Where it is](https://www.google.com/maps/search/?api=1&query=46.959279%2C-121.089893) - [Directions](https://www.google.com/maps/dir/?api=1&destination=46.959279%2C-121.089893) - **Trail network:** Regional - **Run by:** United States Department of Agriculture Forest Service It is one of the [Hiking](https://kokai.app/en/paises/america/estados-unidos/senderismo/) places in United States. In [Kokai](https://kokai.app/en/) it is already on your trip map next to the places you save yourself, and it goes into a day's plan with one tap. ## When to go The best time to visit Boulder Cave Trail is **April to October**. | Mes | Época | Hours of daylight | | --- | --- | --- | | January | Possible | 8 h 43 | | February | Possible | 10 h 03 | | March | Possible | 11 h 36 | | April | Best time | 13 h 22 | | May | Best time | 14 h 51 | | June | Best time | 15 h 40 | | July | Best time | 15 h 20 | | August | Best time | 14 h 02 | | September | Best time | 12 h 19 | | October | Best time | 10 h 37 | | November | Possible | 9 h 05 | | December | Possible | 8 h 20 | In June there are 15 h 40 of daylight, and in December, 8 h 20. Daylight hours are calculated from the site's latitude for the 15th of each month; when planning a full day on foot they matter as much as the weather. When to go to United States in general, with its festivals and peak seasons, is in [its country guide](https://kokai.app/en/paises/america/estados-unidos/#cuando-ir). ## Before you go to United States To enter United States there are 9 things to sort out before you leave, starting with “Book national parks and cars in advance”: they are all, with their deadlines, in [the United States checklist](https://kokai.app/en/paises/america/estados-unidos/#antes-de-salir). Currency: US dollar (USD); plugs: Type A and B · 120 V · 60 Hz (you need an adapter, and check your devices' voltage); emergencies: 911 for everything. In [Kokai](https://kokai.app/en/) you tick off the checklist inside your trip, and each item reminds you when it is time to do it. ## What is nearby - [Norse Peak Wilderness](https://kokai.app/en/paises/america/estados-unidos/norse-peak-wilderness/): Wilderness area in central Washington · 22 km - [Mount Aix](https://kokai.app/en/paises/america/estados-unidos/mount-aix/): Mountain in United States of America · 22 km - [William O. Douglas Wilderness](https://kokai.app/en/paises/america/estados-unidos/william-o-douglas-wilderness/): Wilderness area in Washington, United States · 23 km - [William O. Douglas Trail](https://kokai.app/en/paises/america/estados-unidos/william-o-douglas-trail/): Hiking · 25 km - [PCT - Washington Section I](https://kokai.app/en/paises/america/estados-unidos/pct-washington-section-i/): Section of the Pacific Crest Trail in Washington · 26 km Distances are as the crow flies. Everything else is in [the United States guide](https://kokai.app/en/paises/america/estados-unidos/). ## More in United States: Hiking - [Appalachian Trail](https://kokai.app/en/paises/america/estados-unidos/appalachian-trail/): 2,198.4-mile (3,538 km) trail going through fourteen US states managed by the National Park Service - [Pacific Crest Trail](https://kokai.app/en/paises/america/estados-unidos/pacific-crest-trail-2/): long-distance hiking and equestrian trail in the USA - [Ala Kahakai National Historic Trail](https://kokai.app/en/paises/america/estados-unidos/ala-kahakai-national-historic-trail/): historic Place in Hawaii County, Hawaii - [Hager Mountain](https://kokai.app/en/paises/america/estados-unidos/hager-mountain/): mountain in Oregon, United States of America - [North Country Trail](https://kokai.app/en/paises/america/estados-unidos/north-country-national-scenic-trail-ny/): long-distance hiking trail in the United States - [American Discovery Trail](https://kokai.app/en/paises/america/estados-unidos/adt-maryland-seg-3/): long-distance hiking and biking trail across the United States Every United States place under Hiking, each with its season, is on [its page](https://kokai.app/en/paises/america/estados-unidos/senderismo/). ## Frequently asked questions ### What is Boulder Cave Trail? It is a hiking trail in United States. ### When is the best time to visit Boulder Cave Trail? April to October. In June there are 15 h 40 of daylight, and in December, 8 h 20. ### How do you get to Boulder Cave Trail? The nearest main airport is San Francisco International Airport (SFO), 1,045 km as the crow flies. From there, [directions](https://www.google.com/maps/dir/?api=1&destination=46.959279%2C-121.089893) opens the route on the map, and how to get around United States is explained in [its country guide](https://kokai.app/en/paises/america/estados-unidos/#moverse). ### How do I add it to my trip? With one tap. In Kokai it is already on the United States map, next to the places you save yourself: add it to a day's plan, give it a time and, if you like, get a reminder when you pass nearby. ### What else is around here? Nearby you have [Norse Peak Wilderness](https://kokai.app/en/paises/america/estados-unidos/norse-peak-wilderness/), [Mount Aix](https://kokai.app/en/paises/america/estados-unidos/mount-aix/), [William O. Douglas Wilderness](https://kokai.app/en/paises/america/estados-unidos/william-o-douglas-wilderness/). The rest is in [the United States guide](https://kokai.app/en/paises/america/estados-unidos/). Data from [OpenStreetMap](https://www.openstreetmap.org/relation/9677029), licensed under the ODbL. Daylight hours are calculated from the latitude. More in [credits](https://kokai.app/en/aviso/#creditos).