Route 27 AMA: Martínez Nadal Station – Guaynabo
Route 27 connects Martínez Nadal Station on the Tren Urbano with the town centre of Guaynabo, running through the Lomas Verdes, Camino Alejandrino and Las Cumbres neighbourhoods.
Route and stops
Route 27 climbs from the station through the inland part of the Guaynabo municipality. This is the official ATI itinerary in the Martínez Nadal → Guaynabo direction:
- Martínez Nadal Station — Tren Urbano connection
- P.R. 21
- Ave. San Alfonzo
- Ave. Paz Granela
- Calle Santiago Iglesias
- Ave. Lomas Verdes
- Camino Alejandrino
- Ave. Esmeralda
- Calle José Carazo
- Ave. Las Cumbres
- Calle Cecilio Urbina (Guaynabo)
Itinerary as published by ATI. Check the official route map or the Transit app for real-time detail.
Schedule and frequency
Route 27 runs Monday to Saturday and on public holidays. These are the official ATI times:
| Direction | Days | First trip | Last trip |
|---|---|---|---|
| M. Nadal → Guaynabo | Monday to Friday | 5:45 a.m. | 8:45 p.m. |
| M. Nadal → Guaynabo | Saturdays | 6:00 a.m. | 7:45 p.m. |
| M. Nadal → Guaynabo | Holidays | 7:00 a.m. | 8:00 p.m. |
| Guaynabo → M. Nadal | Monday to Friday | 5:30 a.m. | 7:50 p.m. |
| Guaynabo → M. Nadal | Saturdays | 6:29 a.m. | 8:14 p.m. |
| Guaynabo → M. Nadal | Holidays | 6:00 a.m. | 8:30 p.m. |
Frequency: every 45 minutes Monday to Friday, every 75 minutes on Saturdays and every 70 to 75 minutes on public holidays.
AMA schedules may change and are not always met exactly. Check the actual arrival time in the official Transit app before you set off.
Fare
Right now travel is free because fare collection is suspended. When ATI reinstates fares, the price of Route 27 will be:
Payment will be made on boarding, with exact change or with the travel card sold at Tren Urbano stations. The card allows free transfers between train and bus within a 2-hour window.
Tren Urbano connection
Route 27 only meets the train at one end: Martínez Nadal Station. The centre of Guaynabo has no station, so this bus is the link from the municipality:
- 🚆Martínez Nadal StationRoutes 8 and 19 also stop there. It has the largest car park in the network: 1,007 free spaces
- 🔁Overlap at Las CumbresThe itinerary runs along Ave. Las Cumbres, which route 18 from Cupey also reaches
That overlap on Avenida Las Cumbres is useful: route 18 leads to Cupey Station and route 27 to Martínez Nadal, so from that area you can choose between two different ways into the train depending on where you are heading next.