11.9 Beijing-Athens-Santorini. Arrive at 11:40, rent a car to Oia (30 minutes), stay in Oia, explore Oia, watch the sunset. 11.10 Santorini, take a boat or drive to see the Red and Black Beaches, Thira, Pyrgos, Kamari Beach, etc. (1.5-2 hours round trip by car), stay in Fira. 11.11 Santorini-Athens, return the car at 11:00, flight at 12:00-13:00, rent a car, drive along the coastal road for 1 hour to visit the Temple of Poseidon, watch the sunset, drive 2 hours to stay in Corinth. 11.12 Drive from Corinth Canal-1 hour drive-Ancient Theater-0.5 hour drive-Nafplion-0.5 hour drive-Mycenae Ruins-2.5 hour drive-Olympia Ruins, rent a car, stay in Olympia town at night. 11.13 Visit Olympia Museum and Ruins-3.5 hour drive through Corinth Bay and coastal road-Delphi-visit Delphi, stay in Delphi at night. 11.14 Delphi-3 hour drive-Meteora Monasteries, see the Sky City, stay in Kalambaka at night. 11.15 Kalambaka-4 hour drive-Athens, explore Athens, stay in Athens. 11.16 Depart at 9:00, drive 30 minutes to return the car at the airport, 13:00 flight back to Beijing ?

It is suggested to walk counterclockwise which is more scientific. Additionally, Collins is not worth staying in. It takes about half an hour to watch the canal. If you take a boat ride along the river, it will take 2 to 2.5 hours.

Santorini is very small, two nights, no need to change places to stay, hassle. Also, half a day in Athens feels insufficient.

Oia, Santorini in November, 90% of the restaurants are closed.

In November to Greece ... not the rainy season I spent 4.5 hours from Kalambaka to Athens during the National Day, the speed limit on the expressway was 120, and we drove at an average of 165... I think everyone drives so fast

It takes at least 2.5 hours to drive from the Temple of Poseidon at Sounion to the Corinth Canal, normally 3 hours. The latter half of the coastal road from Athens to Sounion has many bends and cannot drive fast. There are about 30 fewer red lights in the two places, which also limits the speed.

I'm not sure about the island I went to, but your itinerary for the Peloponnese Peninsula seems a bit idealized~~~ Those 0.5-hour trips all have at least two to three hours of driving. I was driving at 130~~~ Poseidon and Corinth are in the opposite direction, and it takes less than two hours to drive. The canal should be seen during the day. You can also see it on the way back, so you don't have to stay in Corinth. Just stay in Nafplion. Also, if you're not a fan of architecture and archaeology, you can skip Olympia and Mycenae. Nafplion is worth seeing, the theater is worth seeing, and the Acrocorinth is also worth seeing. You can skip Olympia and go to Mistra in Sparta and Monemvasia a little further south, both of which are stunning sights, especially the latter. Then you need to prepare for a whole day of driving to Mystras Don't be misled by the map, the mountain roads are not as fast as you think. As for Delphi, you probably don't have time~~~ Actually, you only have seven days~~~ Either go to Athens and the islands, or give up the islands and go to Athens, Mystras, Corinth, and Delphi. Everything else is not realistic. Athens is very valuable, so it's not very cost-effective to give up Athens for other itineraries. In May, it took me about 15 days to tour the Peloponnese Peninsula

Overall feeling too rushed, not enough time budget?