
Interstate 17 is a trail running and running race on August 8, 2026 in Closter, NJ, with an entry fee of $17.
From the Organizer
Traversing beautiful viewpoints along the Hudson River from New Jersey to New York and back again the Interstate 17 Trail Run delivers amazing scenery as it tests your physical prowess.
You will run four times on a four mile loop of rugged technical trails after a mile out and back on a closed road to separate the field of runners for safety. You will complete three counterclockwise loops followed by a final loop clockwise. You must check in at the beginning/end of each loop to have your time card punched.
Founded in 2017. This is NOT your average trail race. This trail is meant to test your strength and endurance. Seventeen miles with over 5000 ft. of elevation change, if you're not extremely careful there are many places where you can fall to your death or serious injury. No awards or medals. Race at your own risk.
Course Description
Mile 0-1: from the start/finish out and back on road
Mile 1-2: heading south along a semi technical rock strewn dirt trail which leads to a steep long descent on rocky uneven jagged stairs and switchbacks. Once you reach the bottom you'll head north on smooth dirt trail along the river with beautiful views
Mile 2-3: a boulder filled rock scramble where you'll need to use your hands to navigate at certain points ends with a singletrack dirt trail with short yet steep ascents and descents along the river
Mile 3-4: singletrack dirt path takes you directly back into another rock scramble, however this portion is much more runnable, ending directly on the shore of the river
Mile 4-5: as you continue along the rocky shore trail you'll encounter the beautiful waterfall signaling your time to ascend the cliff using various switchbacks and staircases. Once you reach the top it's a short trip south through wide cross country skiing trails back to the checkpoint/aid station at the start/finish area
Miles 5-9 & 9-13 repeat miles 1-5. Last loop miles 13-17 you'll reverse your path.
Aid Station
Mile 1, 5, 9, & 13 Fully stocked with water, sports drink, soda, candies, oranges, chips, pretzels and more! Feel free to leave your own personal supply stash, it will be safe and easy to access each loop.
*Due to distance between aid we highly recommend carrying your own hydration supply (handhelds may be cumbersome at times you may require both hands free)
Email with complete information will be sent a week prior to event date to all registered runners, plz check your junk folder or send us a message if you can’t locate it.
More Races: https://linktr.ee/foresttrailstriders
Events
Weather
It's too far out for a forecast, so here's what weather on this date is normally like in the area. A race day forecast will replace this as race week approaches.
Typical High
85°
Typical Low
64°
Chance of Rain
33%
Based on US Climate Normals data from Dobbs Ferry-Ardsley, 7 mi from the venue.
Host City
Population
8,544
as of 2023
City Elevation
37 ft
Nearest Airport
LGA
LaGuardia Airport · 14 mi
Time Zone
Eastern Time
From Endurance Grid
A small town race. Lodging near the start could be limited, so book early.
Race Location
Your Next Start Line
Every finish line starts with a single decision. Claim your spot at Interstate 17, put it on the calendar, and turn “someday” into a start date.
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From Endurance Grid
This race spans more than one sport — here’s a guide to each, so you can understand what’s involved and decide if it’s the right fit. For course distances, logistics, and race-day specifics, always defer to the race organizer’s event page.
Running off-road — dirt, singletrack, and mountain paths — from 5Ks to ultras. The terrain makes for an exciting twist and adventure in your running journey.
From 5K to marathon, running races are an accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.
Coming Up
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Plan your trip
Coming from out of town? There's more to Closter than race day. We'll help you line up nearby lodging, flights, a rental car, and things to do so you can make the most of your racecation.
Plan your trip to ClosterFrequently Asked Questions (FAQs)
Interstate 17
Aug 8, 2026