The EDP Lisbon Half Marathon begins its mass participation race with runners crossing the Ponte 25 de Abril suspension bridge over the Tagus River. This 21.0975 km road race takes place annually in Lisbon, Portugal, every March since 1991, featuring both an elite competition and a large public field. It holds Gold Label status and is part of the SuperHalfs series, a collection of significant European half marathons. The event has attracted nearly 30,000 participants, and the organizers also arrange a shorter mini marathon.
The elite course commences at sea level on the Tagus's north bank, maintaining a flat profile as it proceeds east towards central Lisbon, passing landmarks such as the docks, Belém Tower, and Jerónimos Monastery. The race has a history of fast performances; Jacob Kiplimo established the men's course record, Zersenay Tadese set new world records for both 20 km and the half marathon in a single race, and Haile Gebrselassie is a former champion. Kenyan athletes have won over half of all races, and Tegla Loroupe secured victory in the women's event six times. Previous iterations of the course sometimes yielded times ineligible for records due to variations in length, wind conditions, or elevation changes, leading to adjustments in the elite route to comply with record-setting regulations.