# OBT-3, United States: what it is and when to go > OBT-3 is a hiking trail in United States (Thornton). Interests: Hiking. The best time to visit is April to October. In June there are 15 h of daylight, and in December, 9 h. 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/obt-3/ - 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:** ORD Chicago, 46 km as the crow flies - **Website:** [outerbelt.org](https://outerbelt.org/) - **Trail network:** Regional - **Distance:** 338 km - **Run by:** Outerbelt Alliance NFP - **Coordinates:** 41.66176, -87.54541 ## What it is and where OBT-3 is a hiking trail in United States (Thornton). It is in [Thornton](https://kokai.app/en/paises/america/estados-unidos/thornton/), where this site lists 11 more places to see, 12 km from the centre. Its coordinates are 41.66176, -87.54541; the nearest main airport is Chicago O'Hare International Airport (ORD, Chicago), 46 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=41.661762%2C-87.545407) - [Directions](https://www.google.com/maps/dir/?api=1&destination=41.661762%2C-87.545407) - **Trail network:** Regional - **Distance:** 338 km - **Run by:** Outerbelt Alliance NFP 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 OBT-3 is **April to October**. | Mes | Época | Hours of daylight | | --- | --- | --- | | January | Possible | 9 h 18 | | February | Possible | 10 h 23 | | March | Possible | 11 h 40 | | April | Best time | 13 h 08 | | May | Best time | 14 h 21 | | June | Best time | 15 h | | July | Best time | 14 h 44 | | August | Best time | 13 h 41 | | September | Best time | 12 h 16 | | October | Best time | 10 h 51 | | November | Possible | 9 h 36 | | December | Possible | 9 h | In June there are 15 h of daylight, and in December, 9 h. 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 - [Salem Baptist Church](https://kokai.app/en/paises/america/estados-unidos/house-of-hope/): Church in Illinois, United States · 5.7 km - [18th Street Brewery](https://kokai.app/en/paises/america/estados-unidos/18th-street-brewery/): Brewery · 5.7 km - [Pullman National Historical Park](https://kokai.app/en/paises/america/estados-unidos/pullman-national-historical-park/): Historic district and national monument in Chicago · 6.3 km - [Green Lake Family Aquatic Center](https://kokai.app/en/paises/america/estados-unidos/green-lake-family-aquatic-center/): With kids · 6.7 km - [Church of the Immaculate Conception](https://kokai.app/en/paises/america/estados-unidos/immaculate-conception-roman-catholic-church/): Polish church in Chicago · 8.3 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 OBT-3? It is a hiking trail in United States. ### When is the best time to visit OBT-3? April to October. In June there are 15 h of daylight, and in December, 9 h. ### How do you get to OBT-3? The nearest main airport is Chicago O'Hare International Airport (ORD), 46 km as the crow flies. From there, [directions](https://www.google.com/maps/dir/?api=1&destination=41.661762%2C-87.545407) 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 [Salem Baptist Church](https://kokai.app/en/paises/america/estados-unidos/house-of-hope/), [18th Street Brewery](https://kokai.app/en/paises/america/estados-unidos/18th-street-brewery/), [Pullman National Historical Park](https://kokai.app/en/paises/america/estados-unidos/pullman-national-historical-park/). The rest is in [the United States guide](https://kokai.app/en/paises/america/estados-unidos/). Data from [OpenStreetMap](https://www.openstreetmap.org/relation/12626281), licensed under the ODbL. Daylight hours are calculated from the latitude. More in [credits](https://kokai.app/en/aviso/#creditos).