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Baris 18:
Gagasan GR 20 muncul dari seseorang yang dulunya adalah inspektur jenderal kepemudaan dan olahraga, Marcel Schlück, dan temannya, Guy Degos, yang keduanya adalah penggemar olah raja jalan kaki.
Pada Juni 2016, [[François D'Haene]] mencatat waktu tercepat untuk perjalanan melintasi jalur ini, yaitu 31 jam.<ref>{{cite news| last = Granger| first = Dom| title = Watch this guy break a running record in Corsica: A mythical trail, a record to beat and a super-athlete – the perfect mixture for a unique adventure| newspaper = Red Bull #ultrarunning| date = 08-06-2016| url = http://www.redbull.com/en/adventure/stories/1331799248035/francois-dhaene-record-gr20| accessdate = 21-10-2017| archive-date = 2017-02-25| archive-url = https://web.archive.org/web/20170225203330/http://www.redbull.com/en/adventure/stories/1331799248035/francois-dhaene-record-gr20| dead-url = no}}</ref>
|first=Dom |title=Watch this guy break a running record in Corsica: A mythical trail, a record to beat and a super-athlete – the perfect mixture for a unique adventure| newspaper = Red Bull #ultrarunning| date=08-06-2016 | url =http://www.redbull.com/en/adventure/stories/1331799248035/francois-dhaene-record-gr20| accessdate = 21-10-2017}}</ref>
