Two and a half days in Athens — the 08:00 Acropolis slot[1], the Acropolis Museum[2] and the Ancient Agora[3] — then one base for the remaining four nights, not two. Each island change eats most of a day, and Cycladic guidance wants three nights per island minimum[14]. Naxos is the default[4]; a Nafplio-based Peloponnese loop is the better call if you want ruins and a car[5]. The real question is not which island but how much ferry risk you are willing to hold.
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Every ferry source says the same thing: take the earliest departure, because afternoon crossings sit in the meltemi peak[8][60]. Route A spends a half-day on the Agora first and pays for it with a midday boat. If the forecast is bad, invert it — 07:00 sailing, Agora dropped — because the Agora will still be there and the Beaufort 7 afternoon will not wait.
| Crossing | Duration | From |
|---|---|---|
| Aegina | 30 min – 1 h 30 | €9.50 |
| Hydra | 1 – 2 h | €15 |
| Milos | 2 h 30 – 7 h 30 | €33 |
| Paros | 2 h 45 – 5 h | €40.50 |
| Naxos — Route A | 3 h 15 – 6 h | €42 |
| Mykonos | 2 h 40 – 6 h | €43 |
| Santorini | 3 h 55 – 8 h | €39 |
| Heraklion, Crete | 7 – 13 h | €27.50 |
| Rhodes | 12 – 22 h | €46.50 |
All fares and durations from Ferryhopper's Piraeus board for 2026[20]. Gates: E1 Santorini/Crete/Dodecanese, E6–E7 Cyclades, E9 Saronic high-speeds — your gate is printed on the ticket[23][22]. Coming off an international flight, allow ≥5 h to a Piraeus sailing and ≥4 h to Rafina — the airport KTEL reaches Rafina in ~30 min for €4–5.50 cash[24][25]. Blue Star web check-in opens 48 h and closes 2 h before departure[63].

Beds on top: €80–150/night mid-tier island, against €150–280 on Santorini or Mykonos[19].
Plus the car: €50–100/day in August, €5–12/day zero-excess, petrol ~€2.00–2.10/L[51], and tolls of €13.80–19.50 Athens–Corinth plus ~€11.75 Corinth–Kalamata[50]. Rooms €80–150[19].
Acropolis + Acropolis Museum + Ancient Agora. Everything else in Athens is discretionary[9].
The direct Athens–Kalambaka train is suspended until late 2026/mid-2027; what is left is a 4 h 30 coach each way at €54 — nine hours of transit before you see anything, and the monasteries shut by 15:00–17:00. "I personally wouldn't do it… it's a LONG day!"[52] Meteora is an overnight, not a day trip.
Cycladic guidance is three nights per island minimum[14], and the Cyclades run on two effectively separate ferry lines, so islands 40 km apart can be a long cross-line connection[60]. On a seven-night trip, budget one full day per island change: two islands is the honest maximum.
Fifteen columns, no shade, twenty minutes — and the whole thing is visible from the perimeter fence for nothing. Walk past it to Hadrian's Arch instead[9].
Book the 08:00 Acropolis slot, pair it with the Acropolis Museum and the Ancient Agora, and treat almost everything else as optional.
One Cyclades island beats any two-island hop; the Saronic is the only cluster where two islands in four days is not a trap.
Piraeus, Rafina or Lavrio, conventional ferry or catamaran, and the small set of legs where a domestic flight actually beats the boat.
Cheaper and emptier than the Cyclades in August, but far hotter and far more driving — with the routed 5-night version.
One spare day in August: the early hydrofoil to Hydra, or Delphi for antiquity — and skip Meteora and the three-island cruise.
Souvlaki row, one mezedopoleio dinner and one rooftop; skip the starred night unless you want it.