Year 458 BC was a year of the pre-Julian Roman calendar. At the time, it was known as the Year of the Consulship of Rutilus and Carvetus (or, less frequently, year 296 Ab urbe condita). The denomination 458 BC for this year has been used since the early medieval period, when the Anno Dominicalendar era became the prevalent method in Europe for naming years.
The Athenians start constructing the Long Walls to protect the route from their city to the port city of Piraeus.
Aegina joins the Peloponnesian alliance, but their combined fleet is defeated by the Athenians in the Battle of Aegina. The Athenians, under the command of Leocrates, land on the island of Aegina and besiege and defeat the city. Aegina is forced to pay tribute to Athens.