Hybrid wireless networks support both Mobile Ad hoc network (MANET) and Infrastructure wireless network. An efficient data routing protocol is important to improve the network efficiency. This efficient data routing protocol support hybrid wireless networks for high capacity and scalability. In third-generation (3G) wireless data networks, mobile users experiencing p o or channel quality usually have low data-rate connections with the base-station. Providing service to low data-rate users is required for maintaining fairness, but at the cost of reducing the cell’s aggregate throughput. In this project, the system proposed Distributed Three-Hop Routing (DTR) protocol to improve the capacity of Hybrid wireless networks. This DTR protocol divides the message stream in to a number of segments. This segments are distributed in terms of wide spread Base station. Simultaneously the Base station distributes the segments and forwarding the data using Mobile Ad hoc Network. So the DTR protocol improves the Network efficiency and reduces the Overhead. Existing Two-Hop Routing protocols are produce High overhead and Low Reliability. The proposed DTR protocol compare to Two-Hop Routing protocol improve the Network Efficiency and reduce the Overhead.