4 events in Onondaga County, New York

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

• Earth Day Half Marathon, 5K & Relay [runsignup.com]
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  Sat, Apr 18, 2026 at 8:15 AM

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  EARTH DAY HALF MARATHON, 5K & Relay

  April 18, 2026

  The Earth Day Half Marathon, Relay & 5K will be celebrating it's 12th Anniversary in 2026. This event has quickly become one of CNY’s most looked...

  EARTH DAY HALF MARATHON, 5K & Relay

  April 18, 2026

  The Earth Day Half Marathon, Relay & 5K will be celebrating it's 12th Anniversary in 2026. This event has quickly become one of CNY’s most looked forward to springtime races! Along with some of the best swag out there, all participants get a tree to plant! Runners love the connection to the countryside setting. As you run along the low-traffic country roads, you’ll be rewarded with amazing views of rolling farmland, pastures with cows and horses and the lookout at Beaver Lake. The race start/finish and post-race fest are at the Emmi Farm’s Greenhouse with lots of parking, conveniently nearby- within walking distance.

  The half marathon is mostly a loop course on low-traffic, country roads with many friendly neighbors that come out to cheer you on! The course is described as having rolling hills with a few good ones between Mile 8/9. The Half Marathon Relay is a 2 person relay with each member of the team running 6.55 miles (1/4 marathon). The 5K is an out & back along two fairly flat stretches of country road.

  The Earth Day Half Marathon, Relay & 5K event benefits the Baldwinsville Meals on Wheels and the Baldwinsville Sports Booster Club.

  RACE WEATHER & CLIMATE

  Baldwinsville is located just 15 miles NW of Syracuse in Central NY. Baldwinsville typically sees temperatures in April range between the high 40's to mid 50’s.

  3.1 Miles 5k 6.55 Miles 13.1 Miles Half Marathon Relay Run Walk

  Corner Rt. 370 & Vann Road, Onondaga County, New York, 13027, United States
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• Tromptown Half Marathon & 5K [runsignup.com]
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  Sat, Aug 08, 2026 at 7:30 AM

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  Join us for the 49th Annual Tromptown Half Marathon Half Marathon or 5K on Saturday, August 8th as we continue to support the DeRuyter Fire Dept and other local community organizations in the...

  Join us for the 49th Annual Tromptown Half Marathon Half Marathon or 5K on Saturday, August 8th as we continue to support the DeRuyter Fire Dept and other local community organizations in the DeRuyter area including the graduating class of 2027. Stick around post race for the DeRuyter Fireman Field Days event (Aug 6-9th). All Half Marathon finishers will receive a free pancake breakfast post race.

  The Tromptown 5K has been moved to Saturday morning (Aug 8) for 2026.

  3.1 Miles 5k 13.1 Miles Half Marathon Run

  Mechanic St., Onondaga County, New York, 13052, United States
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• Morgan Hill Trail Races [facebook.com] [Register at ultrasignup.com] - Facebook - Instagram
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  Sat, Sep 19, 2026

  Half Marathon Trail

  Morgan Hill State Forest, Onondaga County, New York, United States
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