The start line is in Ayacucho. You can get a luxury coach there from Lima which runs overnight and costs about 20USD-40USD or you can fly which takes a couple of hours and costs about 80USD-120USD. Bear in mind the Monkey Run in April coincides with Semana Santa so things will book up quicker than usual. Everything can be booked online. This website may be a good option to book coaches.
**be aware not all flights leave when scheduled as they wait until the plane is full. Also, if the weather's bad they won't take off. Here's some information on the airlines.
ATALAYA-LIMA (ATSA AIRLINES)
There is a 19 seater plane, run by ATSA airlines which runs twice a week from Atalaya to Lima - Tuesday and Friday at 14:40 for a price range between 70 USD and 150 USD. They are normally put on sale on their website between 60-90 days before the date and sell out quite fast.
+51 1 717-3268
ATALAYA-PUCALPA (AIR MAJORO)
They can have up to 3 flights (8 seats each) on the 22nd April. Between 9:30 and 12:30, so they’ll arrive in Pucallpa around 14:30.
Email in administración.email@example.com, with the reference Monkey Run Peru, giving them your full name, date of travel and passport number.. Then the payment is 270 in soles in Atalaya.
Miss Gianina Albitres (+51) 95661861 would be the person dealing with your bookings, she speaks Spanish. It’s likely the flights will only be confirmed once enough people make reservations.
There are up to 4 airlines between Pucallpa and Lima that can be booked online (between 50 usd to 120usd):
There's also the option to go back via land, it'll cost about 40USD per person in 4x4s to Satipo, and then a night coach to Lima which will cost roughly 25USD.
The 4x4 has to be sorted in person in Atalaya. The bus can be booked online.
It's possible to get a 7-8 hour boat to Pucalpa, they go every night at midnight for 20 usd approx. They get to Pucalpa in 15hours. You cannot book in advance, you’ll need to do from Atalaya.
All of the guff above is to help with your travel plans but none of the transfers or travel options are part of your Monkey Run entry fee and The Adventurists doesn’t have any official connection with any of the providers.
Remember it may take longer than you think so allow a bit of breathing space for your international flights out of Lima.