How do you pack enough food on board for a round-trip excursion that will take 18 months if they only spend a week on the surface?

Source: http://shelburnefreepress.ca/?p=32037

In fact, BusinessDay reports that 590 of the 1,411 attendees were given free tickets by the Nigerian government to attend the conference; thus the estimated cost of these delegates’ round-trip airfare is N885 million.

Source: https://www.opinionnigeria.com/could-participants-bring-knowledge-garnered-from-cope28-to-bear-in-tackling-climate-change-by-isaac-asabor/

Saturday was perhaps the most grueling day of his five-day visit to Portugal, given the round-trip helicopter ride to Fatima and a planned prayer vigil that wasn’t expected to begin until his usual bedtime in Rome.

Source: https://federalnewsnetwork.com/world-news/2023/08/pope-visits-portuguese-shrine-known-for-apocalyptic-prophesy-linked-to-russia-as-war-rages-on/

The average price of a round-trip flight in the U.S., adjusted for inflation, has steadily fallen over the years, even if it may not feel like it in nominal terms.

Source: https://www.etftrends.com/heres-what-a-i-has-to-say-about-the-45th-anniversary-of-commercial-airline-deregulation-in-the-u-s/

The family has made a 650 kilometre round-trip for a concert they never expected to see.

Source: https://www.cessnockadvertiser.com.au/story/8397081/ready-to-go-little-macca-hoping-to-dance-with-his-namesake/?src=rss

The nearest tip is Hexham - a 26 mile round-trip.

Source: https://www.chroniclelive.co.uk/news/north-east-news/prudhoe-tip-opening-hours-change-26805980

We walked about 10 to15 miles a day, we journeyed in bus for about 3,300 km and flew a round-trip flight of 12,351 miles.

Source: https://www.occatholic.com/oc-catholic-afar-3/