Timberlake Golf Course sits on rolling terrain outside Sullivan, Illinois, where the landscape alternates between open fairways and stands of mature oak and hickory. Several holes play alongside a small lake that comes into play on the inward stretch, while others wind through a modest ravine that drops away from the main level. The greens are bentgrass, moderately sized, and slope gently away from the center, requiring careful approach shots when the pin is tucked. A creek crosses the property twice, once as a narrow ribbon near the fourth tee and again as a wider channel guarding the approach to the eighth green. Cart paths follow the natural grade, offering views of the surrounding farmland and the low skyline of Sullivan itself. Maintenance crews keep rough areas at a playable length rather than letting them grow thick, so errant shots remain recoverable. The course lacks extensive bunkering, relying instead on the natural hazards and subtle elevation changes to shape strategy.