From sea kayaking under Marjan to a konoba dinner in Varoš, these are the activities we would actually spend our own money on — with real prices, honest durations and where to book.
An hour and a half up the marked path from Strožanac to the chapel of St George, topping out around 441 metres with Split, Kozjak, Mosor and the islands all in view. It is free, it starts at a supermarket, and locals walk it before work.
The south side of Marjan drops straight into clear water over rock rather than sand, which is exactly what you want and exactly what the city beaches are not. Bring a mask, walk in off the stones at Kašjuni or Bene, and it costs nothing.