Organic　radicals　are　generally　short-lived　intermediates　with　exceptionally　high　reactivity.　Strategically,　achieving　synthetically　useful　transformations　mediated　by　organic　radicals　requires　both　efficient　initiation　and　selective　termination　events.　Here,　we　report　a　new　catalytic　strategy,　namely,　bimetallic　radical　redox-relay,　in　the　regio-　and　stereoselective　rearrangement　of　epoxides　to　allylic　alcohols.　This　approach　exploits　the　rich　redox　chemistry　of　Ti　and　Co　complexes　and　merges　reductive　epoxide　ring　opening　(initiation)　with　hydrogen　atom　transfer　(termination).　Critically,　upon　effecting　key　bond-forming　and　-breaking　events,　Ti　and　Co　catalysts　undergo　proton　transfer/electron　transfer　with　one　another　to　achieve　turnover,　thus　constituting　a　truly　synergistic　dual　catalytic　system.