Rizal to Pasig to Gilmore — the east's second path in.
Complements the Blue Line for the east side — but runs a different path. From Taytay Rotonda in Rizal through Pasig City to Gilmore in QC. Intersects the Orange Line (L3) at the C5/Ortigas junction and connects into the Yellow Line (L1/EDSA) at Gilmore, making it one of the key cross-connectors in the entire network.