Terina became a prosperous city and protected the route from the Tyrrhenian Sea to Croton.[5] Later in the second half of the fifth century BC Terina was attacked by Thurii, after that city's foundation in 444/3 BC. Thurii wanted to capture Terina because the city was closely connected with Croton, Thurii's enemy. The Spartan general Cleandridas who led the Thurian army planned a surprise attack, but this failed when his army was discovered.