Ulo ng Apo Marathon 2019 will be held on July 7, 2019 at the SM City Olongapo Downtown. Ulo ng Apo Marathon is an annual running event held in Olongapo City featuring a full marathon. Ulo ng Apo Marathon 2019 July 7, 2019 Olongapo  EVENT DISTANCES 3K, 5K, 10K,...