Telethonと言う英語の単語あります。TelephoneとMarathonを一緒にしたような言葉ですね。これが日本の24時間テレビにぴったしの単語単語なんですね。
There's a special once-a-year charity TV event in Japan called "24 hour television" which is a 24 hour long telethon charity with lots of entertainment and featuring many popular TV stars and personalities. It collects pledges for a charity to help old and handicapped people. They managed to get pledges worth around Yen 300,000,000 this year. The main event of the show is a 24 hour 100Km marathon run by famous TV personalities, who for this year happened to be a 59 year old lawyer who is popular in a legal quiz show here. He managed to complete his run in time, which was totally amazing!
こんな感じでいいですか。