
NYC 50k - Stair Set of Doom Ultra is an ultra and running race on April 17, 2027 in Bronx, NY, with an entry fee of $55.
From the Organizer
The 4rd Annual NYC Stair Set of Doom Ultra isn’t your average race, it’s an adventure through the heart of New York City, where every mile tells a story and every staircase is a challenge. Covering 33+ miles across city streets, parks, and dirt trails, this race gives you a raw, unfiltered experience of the city’s most iconic spots and hidden gems. From historic bridges to winding park paths, you’ll get a tour of NYC like no other.
Here's what you’re up against:
This race is as real as it gets. While we’ll have an aid stations along the way, the Stair Set of Doom is unsanctioned and largely self-supported, meaning you should rely on your own water, fuel and restroom usage (public restrooms will be marked along the route). It’s a grind, but for those who want to experience NYC in the most epic way possible, it’s the ultimate test.
The course map and route instructions will be shared once you register for the event.
What's Included:
There will be a post race beers at the Broadstone Bar and Kitchen.
Join us on this Epic adventure!
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
62°
Typical Low
45°
Chance of Rain
37%
Based on US Climate Normals data from Bronx, 5 mi from the venue.
Host City
Population
8,516,202
as of 2023
City Elevation
72 ft
Nearest Airport
LGA
LaGuardia Airport · 5 mi
Time Zone
Eastern Time
From Endurance Grid
A big city race. Expect multiple lodging options and plenty to do the day before.
Race Location
Your Next Start Line
Every finish line starts with a single decision. Claim your spot at NYC 50k - Stair Set of Doom Ultra, put it on the calendar, and turn “someday” into a start date.
268
Days to train
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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.
An ultramarathon is anything beyond the standard marathon — 50K, 50-mile, 100K, 100-mile, and timed events. Crossing the line is less about speed and more about not quitting.
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.
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Plan your trip
Coming from out of town? There's more to Bronx 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 BronxFrequently Asked Questions (FAQs)
NYC 50k - Stair Set of Doom Ultra
Apr 17, 2027