Background:
In 2019, Let's Run surveyed all ultramarathon records and found nothing that compares to Yiannis Kouros’ performances in 24-hour events. His record of 303 km from 22 years earlier seemed unbreakable.
Top 24-Hour Runs In History in Km source
303.306 Yiannis Kouros Adelaide 1997 track 295.030 Yiannis Kouros Canberra 1997 track
294.104 Yiannis Kouros Coburg 1996 track
290.221 Yiannis Kouros Basel 1998 road
286.463 Yiannis Kouros New York 1985 road
285.362 Yiannis Kouros Surgeres 1995 track
285.002 Yiannis Kouros Surgeres 1996 track
284.853 Yiannis Kouros New York 1984 road
284.070 Yiannis Kouros Soochow 2002 track
283.600 Yiannis Kouros Montauban 1985 track
282.981 Yiannis Kouros Coburg 1995 track
282.282 Denis Zhalybin St Peterburg 2006 road
In April 2021, Lithuania’s Aleksandr Sorokin set a new world record of 100 miles in 11:14:56 at the Centurion Running Track 100 Mile in England.
In an interview, Sorokin explained how he got started running long distances.
The pandemic interrupted his job as a casino dealer, allowing him to increase his training to about 260 kilometers (155 miles) per week.
During the event, his crew handed him a note indicating that he was in reach of the 12-hour world record, with 46 minutes left to cover 8 km.
"My first thoughts were: Why? No! I don’t want to! I’m tired enough already. But then I thought, Forty-five minutes, eight kilometers. I’d better do it now that I am here."
He continuted and set world records for both 12 hours and 150 kilometers.
Sorokin: Oh yeah! This is exactly the word that I feel: satisfaction!
iRunFar: What else do you plan to race this year? Will you return to defend your title at the IAU 24-Hour World Championships in October?
Sorokin: Yes, I plan to be at the 24-hour world championships. But I don’t plan any other races for the year...
But the IAU 24H World Championship in Romania was cancelled. Sorokin ran the 2021 UltraPark Weekend 24 Hour race in Poland on August 28/29, where he broke the Yiannis Kouros world record, running 309.400 kilometers (192.252 miles), an average pace of 4:39 minutes per kilometer (7:29 minutes per mile) for 24 hours.
Let's Run then published a 2019 interview with Kouros that had been delayed by vision problems "as he had been busy welding iron as he worked on his house."
"There is no logic in this sport and using Western minded settings usually become a disaster. You have to take advantage of your feelings at races and be more secured at trainings."
"When I did my studies in music and literature I was sleeping about 30’ per 24h, because I wanted to give my best and finish as soon as possible. Before that, when I was building my house in Greece and at the same time I had to be trained for races I used to sleep about two and a half hour per 24h. Now I sleep between 4-6 hours."
Other news:
New women’s half marathon world record run by 22-year-old Yalemzerf Yehualaw of Ethiopia at the Antrim Coast Half Marathon in Northern Ireland on Sunday in 1:03:44.
Courtney Dauwalter set a women’s course record of 22:30:54 at Ultra-Trail du Mont-Blanc.
Eliud Kipchoge: “After leaving the marathon, I want to run the ultramarathons just to feel how it is.”