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Events

OPEN CAMPING

Get the true Ondessonk camping experience by sleeping among the trees or under a waterfall!  All cabin units have fire pits, benches, picnic tables, a potable water spigot, an outhouse,…
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CLOSED TO THE PUBLIC

Camp Ondessonk will be closed to celebrate the Christmas season!  See you next year!

OPEN CAMPING

Get the true Ondessonk camping experience by sleeping among the trees or under a waterfall!  All cabin units have fire pits, benches, picnic tables, a potable water spigot, an outhouse,…
Read more

2025 Camp Ondessonk Gala Italiano

The Regency O’Fallon 400 Regency Park, O'Fallon, United States

Join us for Gala Italiano, Camp Ondessonk’s bi-annual gala and auction, Saturday, March 1, 2025, at The Regency Conference Center in O’Fallon, Ill.  Through your support of this event, you…
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First Time Camper Open House

The First Time Camper Open House is the best way to introduce potential campers (and nervous parents) to the Ondessonk experience. Families will have a chance to meet leadership staff…
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CLOSED TO THE PUBLIC

We are closed to the public due to a private event. We apologize for any inconvenience.

Spring Stable Round Up

Every spring, volunteers attend the annual Spring Stable Round-Up Weekend to contribute their time & talent to Camp Ondessonk’s stable program, as well as gardening, restoration & preservation efforts. Typical…
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Spring Lodge Reunion

Spring Lodge Reunion is a service-focused experience at Camp Ondessonk. Reunite with friends as you help Camp prepare for the upcoming summer!  Lodge members stay in units and participate in…
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