In this paper, we evaluate the potential of a rate-adaptive hybrid link, combining LED based optical wireless and 60 GHz technologies. These links over short backhauling distances are well suited for the deployment of small radio cells in 5G mobile networks. Results from a 4.5-month outdoor field trial indicate that the availability for both links is 100%. The throughput of the LED-based optical link is higher in 90% of all cases while the 60 GHz link has a higher minimal throughput. If both links are aggregated, the hybrid link offers minimal/average/ maximal data rates of 230/750/880 Mbps over 100 m in all weather conditions.