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INTRODUCTION AND OBJECTIVES: Transfemoral access is the most frequently used vascular approach in chronic total occlusion percutaneous coronary interventions (CTO-PCI). The aim of this study was to evaluate the safety and feasibility of a transradial access CTO-PCI program and its impact on angiographic and clinical results and length of hospital stay.; METHODS: Retrospective multicenter cohort study including 2550 consecutive CTO-PCI procedures included in a multicenter registry with accurate information on vascular access. A total of 896 procedures were performed as radial-only access while 1654 were performed through at least 1 femoral puncture. Clinical and angiographic data were collected.; RESULTS: The mean age was 66.3 ± 11.4 years. The mean Japan-chronic total occlusion score (2.7 ± 0.3) was similar in the 2 groups. Successful revascularization was achieved in 2009 (79.6%) cases, 78.2% and 82.1% in the femoral and radial access cohorts, respectively (P = .002). Periprocedural in-hospital complications were observed in 5.1% and 2.3% (P = .02), with fewer access site-dependant vascular complications in the transradial cohort (2.3% vs 0.2%; P = .009). The mean length of hospital stay was significantly shorter in the transradial access group (0.89 ± 1.4 vs 2.2 ± 3.2 days, P < .001).; CONCLUSION: A transradial program for CTO-PCI is safe and effective in most CTO lesions. The transradial strategy has fewer vascular complications and shorter length of hospital stay without compromising the success rate. Copyright © 2022. Published by Elsevier Espana, S.L.U.