Sell your land to a speculative investor. Many areas have investors that will buy just about anything as long as it is cheap enough. These investors can close quickly, but will frequently offer you a very low price for your land. That's how they're able to move so fast -- they're getting a great deal. Investors usually won't require you to finance the land for them.
Market for Land is Less Active – The market for existing homes is almost always more vibrant than the land market. There simply are fewer numbers of buyers for vacant land than consumers looking for homes. Start marketing a new home listing and a new lot listing when both are desirable and priced well, and you generally can expect fewer contacts about the new lot listing.