Dublin City Marathon 2020 KBC Dublin Marathon Sunday 25th October Dublin City Marathon 2020 is open for registration! Challenge yourself while fundraising for your favorite St. John of God Community Service. This is a single lap, starting and finishing close to the City Centre. Conditions for marathon running are ideal. Sign up to support St John of God Community Services in 2 easy steps: Register to run with KBC Dublin Marathon Set up your personalised online fundraising page on our website Once you have set up your fundraising page Share with family & friends Easily accept donations on your newly created fundraising page Make changes, post updates and send thank-you notes Booking for this event has now closed.