8 events in Jefferson County, New York

From big races to Saturday morning group runs—find 5k events and connect with the local endurance sports community.

• IRAS 2026 Cinco de Mayo Celebration 5K/10K [runsignup.com]
  • Subscribe to My Calendar (sign in required)

  • ---

  • Download single event

  Sat, May 09, 2026 at 8:30 AM

  Description

  ▼ Show more Show less

  Back again, and bigger than last year!

  Join us for the 2026 Cinco de Mayo Celebration 5K/10K, a festive event of community, fitness, and North Country fun! Whether you're chasing a PR, walking or...

  Back again, and bigger than last year!

  Join us for the 2026 Cinco de Mayo Celebration 5K/10K, a festive event of community, fitness, and North Country fun! Whether you're chasing a PR, walking or jogging with friends, or just looking for a fun reason to get moving, there's a place for you at the start. Our 5K and 10K routes are designed to be enjoyable and welcoming, guiding you through the Village of Philadelphia and the scenic countryside. Then bring it home to the finish line for raffles and a Walking Taco. The energy from last year ripples into this event.

  New this year, we have the Little Amigos Mile that will take place just before the 5K/10K start.

  All proceeds benefit Indian River Ambulance Service.

  5k 10k Run Walk

  1 Antwerp Street, Jefferson County, New York, 13673, United States
  OpenStreetMap Google Maps
• Thousand Islands Half Marathon, 10K & 5K [runsignup.com]
  • Subscribe to My Calendar (sign in required)

  • ---

  • Download single event

  Fri, May 15, 2026 at 5:00 PM

  Description

  ▼ Show more Show less

  Take in the famous views of the Thousand Islands and Thousand Islands bridge. Once again, we will be offering the 5K on Friday evening at the Thousand Islands Winery in Alexandria Bay. On Saturday,...

  Take in the famous views of the Thousand Islands and Thousand Islands bridge. Once again, we will be offering the 5K on Friday evening at the Thousand Islands Winery in Alexandria Bay. On Saturday, we will offer the 10K and Half Marathon on Wellesley Island along with the post-race festivities and awards ceremony. If you are feeling ambitious, you are more than welcome to consider the Island Double (5K & 10K) or the Island Super Double (5K & 13.1M). This event is part The Get Fit Half Marathon Series.

  For 2026 we are returning to the Lake Course Executive Club House (21496 Club House Dr.) for the start/finish for Saturdays Half Marathon & 10K similar to years 2020-2023 & 2025.

  Great views, great courses...always best swag plus we get to help the great people of Alexandria Bay as well as the ACS Booster Club!

  3.1 Miles 5k 6.2 Miles 10k 15k 13.1 Miles 16.2 Miles Half Marathon Run

  21496 Club House Dr., Jefferson County, New York, 13640, United States
  OpenStreetMap Google Maps
• Lake Monster 5k and 12k 2026 [runsignup.com]
  • Subscribe to My Calendar (sign in required)

  • ---

  • Download single event

  Sun, May 24, 2026 at 9:00 AM

  Description

  ▼ Show more Show less

  The Lake Monster 5k, 12K, and 1.5 mile walk begins at Chaumont's newest park, Veteran's Memorial Park at 12200 NYS Route 12E. (Next to Wise Guy's Restaurant)

  Runners then make their way to Point...

  The Lake Monster 5k, 12K, and 1.5 mile walk begins at Chaumont's newest park, Veteran's Memorial Park at 12200 NYS Route 12E. (Next to Wise Guy's Restaurant)

  Runners then make their way to Point Salubrious for a 5K out and back or 12K loop along the scenic Lake Ontario shoreline with views of Guffin, Sawmill and Chaumont Bay, as well as Cherry Island. A 1.5 mile walk will follow the same direction as the 5K and will also be out and back. Our Lake Monster logo was designed by a Lyme Central School student, Rosamond Hunt. The creature is A Great Blue Heron, Osprey and Northern Pike hybrid and represents the lush Great Lakes wildlife. Proceeds will benefit Lyme Parks and Recreation.

  DATE: The timed road race and walk will start at 9 am on Sunday May 24th.

  REGISTRATION FEE AND T-SHIRTS: Pre-registration includes a t-shirt until April 30th. After April 30th, registration will will not include a t-shirt. Limited t-shirts will be available for purchase on race day. 1.5 mile walk is not timed. All registrations, including day of will be online only. No paper or cash will be accepted.

  ADDITIONAL RACE INFORMATION: There will be restroom facilities available, but no showers.

  COURSE MAPS: https://connect.garmin.com/modern/activity/18973480346?share_unique_id=2

  *Prizes will be awarded to the top male and female finishers in both the 5k and 12K. The top male and female winner in the 12k will be awarded the lake monster trophy!

  *See our Facebook page https://www.facebook.com/lakemonster5k12k for all updates and changes.

  1.5 Miles 5k 12k Run Walk

  12200 NYS Route 12E, Jefferson County, New York, 13622, United States
  OpenStreetMap Google Maps
• Summer Solstice 5K [runsignup.com]
  • Subscribe to My Calendar (sign in required)

  • ---

  • Download single event

  Sat, Jun 20, 2026 at 9:30 AM

  Description

  ▼ Show more Show less

  Come celebrate the official start of Summer 2026 with us as we kick off the season with a fun and rewarding 5K in beautiful Sackets Harbor, NY. This event coincides with the Summer Solstice on...

  Come celebrate the official start of Summer 2026 with us as we kick off the season with a fun and rewarding 5K in beautiful Sackets Harbor, NY. This event coincides with the Summer Solstice on Saturday, June 20th. Join us as we usher in the beauty and warmth the new summer ahead. The 5K course is mostly flat with spectacular views of Lake Ontario as you make your way along the 3.1 mile trek. Expect more that just a 5K run as we are teaming up with the 1812 Brewing Co., the Whiskey Coop and The Boathouse to extend the fun beyond the run!

  Willow Running USA is teaming up with the Garrett W. Loomis Foundation, a 501c-3 committed to enhancing Fire Safety regionally in the memory of Garrett.

  Join us if you love to run, love to have fun and especially if you love the sun!

  5K Course Map

  5k Run

  304 W Main St, Jefferson County, New York, 13685, United States
  OpenStreetMap Google Maps
• Thousand Island Park 5K [runsignup.com]
  • Subscribe to My Calendar (sign in required)

  • ---

  • Download single event

  Sat, Jul 04, 2026 at 12:00 PM

  Description

  ▼ Show more Show less

  The Thousand Island Park 5K, or TIP5K, is a memorial footrace to honor the memory of General TJ "Demon" Costello, who served as a fighter pilot in the United States Air Force. This race started at a...

  The Thousand Island Park 5K, or TIP5K, is a memorial footrace to honor the memory of General TJ "Demon" Costello, who served as a fighter pilot in the United States Air Force. This race started at a family reunion in 2013 and has grown to include the local community of TI Park. It's a small, family-oriented race that welcomes all levels of participation. Walkers and strollers are welcomed! Although, be advised that the course covers dirt roads, grassy lawns, and one trail. Also, the route will be poorly marked, open to traffic, and the timing crew will consist of a couple of teenagers with an iPhone. No timing chips here! So, your official time will likely be wrong, if it's recorded at all. However, I can guarantee a great scenic run, good times and camaraderie, and maybe a cold drink or two at the finish line.

  5k Run Trail Walk

  Outlook Avenue, Jefferson County, New York, 13692, United States
  OpenStreetMap Google Maps
• Tibbetts Point Run 5k/10k [runsignup.com]
  • Subscribe to My Calendar (sign in required)

  • ---

  • Download single event

  Sat, Aug 01, 2026 at 8:00 AM

  Description

  ▼ Show more Show less

  The Tibbetts Point Run is a fast and flat "out-and-back" 5k/10k course that starts right at the heart of the village of Cape Vincent.

  Run along the mighty St. Lawrence Seaway while enjoying...

  The Tibbetts Point Run is a fast and flat "out-and-back" 5k/10k course that starts right at the heart of the village of Cape Vincent.

  Run along the mighty St. Lawrence Seaway while enjoying spectacular views of the river. 10k runners will go all the way out to Tibbett's Point Lighthouse and back, while the 5k runners will have a turnaround halfway on the route.

  It's one of the most scenic routes in Upstate NY!

  Walkers are welcome to sign up for the "TPR Mile Walk" and will also receive a Finisher Medal and T-shirt.

  Come out for this time-honored event, stay for the charm of the village shops and eateries!

  1 Miles 5k 10k Run Walk

  128 Esseltyne St, Jefferson County, New York, 13618, United States
  OpenStreetMap Google Maps