Yes. Comillas sits close to Santillana del Mar's medieval old town, making it easy to build a route that covers more than one Cantabrian highlight in a day. Since your Daytrip driver follows your plan, you can add or drop stops to match the pace you want.
Comillas is about 45 km (28 miles) from Santander and roughly 145 km (90 miles) from Bilbao. A private transfer typically takes around 45-60 minutes from Santander and about 1.5-2 hours from Bilbao, so you can settle in and start exploring without watching a clock or a timetable.
El Capricho's whimsical rooms and gardens generally take about 45 minutes to explore, and a guided tour of Sobrellano Palace runs around 30 minutes. Budget roughly half a day to see both sites plus the Pontifical University's exterior and the town center at a relaxed pace, with time left over for lunch near the harbor.
The hilltop cemetery is worth the short walk for sweeping sea views and Josep Llimona's dramatic Angel Exterminador sculpture. The town's Blue Flag beach and the wild dunes of nearby Oyambre Natural Park round out a visit if you'd rather trade some architecture time for fresh coastal air.
Comillas is a small town with limited direct bus connections and no train station, which makes coordinating public transport frustrating for a single day out. A private transfer takes you door-to-door on your own schedule, dropping you right in the historic center so you can start exploring the moment you arrive.
Comillas packs an unusual concentration of Modernist architecture into one small coastal town. El Capricho, one of Antoni Gaudí's earliest works, sits alongside the neo-Gothic Sobrellano Palace and the striking Pontifical University. Add a Blue Flag beach and dramatic Cantabrian coastline, and you get a rare mix of art, history and seaside charm that fits comfortably into a single day.