Boooo-mfield 5K in Bloomfield: Race Details, Schedule & How to Register

On Saturday, October 24, 2026, the Boooo-mfield 5K turns the streets of Bloomfield into a Halloween-themed race and block party: part race, part party, with costumes encouraged. There is a short kids dash, a 5K walk and run for everyone else, and an AfterBOO party with giveaways and swag once the running is done. Here is the full rundown straight from the race's official event page: the schedule, what registration includes, who the race supports, and how to sign up.

If you caught my recent What's Happening in Bloomfield roundup, this is the deeper dive on this one event, with the full schedule and every registration detail in one place.

What is the Boooo-mfield 5K?

The Boooo-mfield 5K is a Halloween-themed 5K and block party on the streets of Bloomfield: part race, part party, with costumes encouraged. Neighbors line up in costume, kids get a dash of their own, and the finish flows straight into an after-party. The course is USATF-certified, so the race part is real, but the tone is friendly first. In a town like Bloomfield, community events like this are part of how neighbors actually get to know each other, which is one of the reasons so many families choose these streets.

What time does the Boooo-mfield 5K start?

Race morning at the Boooo-mfield 5K runs on a tight, well-paced schedule, and it is deliberately family-friendly:

Where does the Boooo-mfield 5K start?

The race's official event and RunSignUp pages list the start and finish on Carteret Street at 33 Carteret Street, in front of 23 Skiddoo Cafe in Bloomfield's Watsessing neighborhood. It is a proper small-town corner, and race morning there is one of the most Halloween-y ways I can think of to start a Saturday in Essex County. If you are coming from out of town, give yourself a few extra minutes to find street parking nearby.

What's included with registration?

Every registration includes a cotton-blend race t-shirt and a Halloween-themed finishers medal, so you leave with something to wear and something to show for the morning. The AfterBOO party adds giveaways and swag from event vendors starting at 10:00am. For families, the kids dash means the little ones get their own race moment without having to cover the full 5K, and walkers are just as welcome as runners on the main course.

Who does the Boooo-mfield 5K benefit?

Proceeds from the race support the Bloomfield High School cross country and track teams and the Friends of Watsessing Park Conservancy, funding student-athlete travel and new trees in the park. That is the part I like most: your entry fee does double duty as a fun Saturday morning out and a direct contribution to two local causes, one for the students who run and one for the park where neighbors gather.

How do I register for the Boooo-mfield 5K?

Registration runs through the race's official event page at trialsofmilesracing.com/tom/boo, and the race is also listed on RunSignUp. If the date works for you and the family, I would register from the event page rather than waiting, so the t-shirt size you want and the entry tier are sorted ahead of race morning.

Why this race is a good sign for Bloomfield

A community event like this tells you a lot about a town before you ever look at a listing. A block party on Carteret Street, a kids dash filling the corner with families, and a race that pays for student-athlete travel and trees in the park: that is a neighborhood investing in its own quality of life. If you are comparing Essex County towns, race morning in Watsessing is a free, honest look at how Bloomfield actually feels on a Saturday.

However you spend October 24, I hope you get out to see it. And if a home in the neighborhood is on your mind, I would genuinely love to walk you through it, no pressure and no pushy sales talk, just the real local picture.

Talk soon,
Sorelle