By car, about one half hours. By bus, a lot longer, because of all the detours and stops.

There is an express bus to Las Americas. It alternates with the bus that stops for locals One on them goes every 15 minutes. The bus terminal in LAS AMERICAS is beside the new Siam Park. I think the express bus takes approx.1 hour.
Enjoy,
Billyboy.

Thanks very much!

About 45 minutes from Santa Cruz to PDLA by car. Went to Gran Canaria from Santa Cruz by boat in June and we live in Chayofa, it took us about 40 minutes to the port. We are five minutes from Siam Park.

Thanks cyberhiker. That's very useful. Not too long a drive then really.

BillyBoys spot on it takes an hour on the express bus.
Get a bono card and the fare is then only 4.95 euros.
Rodz