During the excursion to the Samaria gorge you will need to take the bus from Chania to Xyloskalo, or you can drive there.
The journey to the starting point is about an hour.You will walk along the canyon for about 5.30 hours at a normal pace with plenty of time for photos.
Once you reach the finish line, the beach of Agia Roumeli, you should board the boat that goes to the beach of Sougia every day at 5.30pm (Anendyk.gr).
From there, a return bus will be waiting for you, which stops at the top if you want to collect the car and then continues to the city of Chania.
You can find the bus schedules in the rental-transfer section.
To cross the gorge of Agia Irini you will need to board the bus to Sougia or drive to the Oasis cafe where the end of the gorge is.
From there you will need to take a taxi to the village of Agia Irini, where the hike begins, with the cost being around 25 euros.
Arriving at the finish line, either collect the car from the Oasis cafe or call a taxi to take you to the beach of Sougia (about 5 euros) where the bus to Chania will be waiting for you.
This particular canyon is 7 kilometers long and the hike takes about 3.30 hours.
You can find bus schedules in the rental-transfer category and book a taxi here Sougia Taxi