Wireless Mesh Networks (WMNs) are undergoing rapid commercialization in many application scenarios such as providing internet access, extending the coverage of wireless local area networks (WLANs), community networking, building automation, high speed metropolitan area networks, and enterprise networking. WMNs are one of the few commonly implemented types of Mobile Ad-hoc Networks (MANETs), so general MANET routing protocols can be used in WMNs. While general MANET routing protocols can be used in WMNs, it is expected that a protocol that takes the particularities of WMNs into account will outperform the general protocol. A new routing protocol is proposed uses all WMNs consideration into account. The proposed routing protocol is based on source routing mechanism, showing that by preferring stable routes, the backbone of stationary nodes presented in WMNs can be effectively used to improve the performance of routing protocol, so the proposed protocol will be called Source Route Routing Protocol (SRRP). The main goal of the proposed protocol is to improve throughput and to reduce average end-to-end delay and packet delivery loosing ratio in large networks. The mobility of the nodes will be maintained having a significant improvement in different network sizes than in MANET routing protocols. From the comparison simulation results, the proposed routing protocol proves to achieve a significant improvement comparing with MANET routing protocols. The percentage of improvement in throughput parameter in no mobility existence over Ad hoc On-Demand Distance Vector Routing protocol (AODV) is 21%, and over Wireless Routing Protocol (WRP) is 40%. And in average end-to-end delay parameter in no mobility existence over AODV routing protocol is 11%, and over WRP is 25%. And in losing ratio parameter in no mobility existence over AODV routing protocol is 23%, and over WRP is 27%. The percentage of improvement in throughput parameter in mobility existence over AODV routing protocol is 15%, and over WRP is 14%. And in average end-to-end delay parameter in mobility existence over AODV routing protocol is 9%, and over WRP is 14%. And in losing ratio parameter in mobility existence over AODV routing protocol is 25%, and over WRP is 24%.