Contact Us


Booking Office: 800-500-5922

On-site Office: 217-854-4820

Fax: 217-854-4840

Booking Office:
PO Box 620
Carlinville, IL 62626

On-site Office:
17280 Lakeside Drive
Carlinville, IL 62626

Retreat Planner

Justin Haschemeyer

Justin will work with you to find available dates, build a budget-friendly retreat package, and help create an event that fits your group’s needs. Justin has been with Lake Williamson since 2005.  He has held leadership positions as Head Lifeguard, Guest Services Manager, and is the current Group Accounts Manager.

Conference Services

Jennifer Frericks - Lake Williamson Conference and Retreat Center - photoJennifer Frericks

After you book your off-site event with our retreat planner, Jennifer will help you plan out all the details. We like to say she’s the one that puts the puzzle pieces together! Jennifer will assign meeting spaces and lodge rooms, as well as work with you to get your meeting space set up to your specifications. She will also help you set up your agenda and schedule recreation and meals.

Director of Adventure Education

Jeffery Gosnell - Lake Williamson Conference and Retreat Center - photo

Jeffery Gosnell

Looking to add a little adventure to your retreat? Whether you want to take your group to new heights on the high ropes course, conquer low ropes challenges, climb in the climbing gym, or solve the mystery in the escape rooms, Jeffery will set up a team building program tailored to your group’s needs. He has over 15 years of experience leading adventure education.