He has served as Co-Chair of the China Council Task Force on WTO and Environment. Runnalls was the Leopold Fellow at the Yale School of Forestry and Environmental Studies and a member of the federal External Advisory Committee on Smart Regulation (EACSR). He serves as Chair of the Adjudication Panel for the ALCAN Prize for Sustainability. He is a member of the Board of the Institute of Advanced Studies of the United Nations University. He is also a member of the Advisory Committee on Partnerships to the Minister for International Cooperation; a member of the Environment Canada Cross-Cutting Issues table and a member of the Advisory Council for Export Development Canada. He also serves on the Inquiry Team for Tomorrow's Global Company.