The main metric that is used in the computer networks to packet forwarding is "shortest path". The shortest path is decided according to some other sub metrics. In wired networks these metrics can be more complex. Generally, in Mobile Ad Hoc Networks (MANETs) simpler metrics are used such as hop count. In this study we suggest a new routing metric for MANETs: one-way-delay (OWD). Simulation results showed that OWD can be used alone as a routing metric and with other metrics.