Oct 8: Chicago Marathon


Hi-tech footwear ignites debate

Tigst Assefa smashed the women’s marathon record in Berlin, but the new supershoe she wore reignited debate about its effect on race times


Adizero Adios Pro Evo 1s

Cost: $500 

Weight: 138g

Adidas claim shoe is 40% lighter than any other supershoe

Lightstrike Pro foam: Provides greater energy return

Advanced outsole technology: For optimum traction

Forefoot rocker: Innovative feature placed at 60% of length of shoe to trigger forward momentum and improve running economy


MARATHON RECORDS BY REGION: MEN

Ten of 12 continental records broken since 2018, including each men’s mark

Africa 		Eliud Kipchoge KEN 		Berlin, 2022 	2:01:09  
Europe 		Bashir Abdi BEL			Rotterdam, 2021 2:03:36
Asia 		El Hassan El Abbassi BRN	Valencia, 2018 	2:04:43
South America	Daniel do Nascimento BRA 	Seoul, 2022 	2:04:51  
North America	Cameron Levins CAN		Tokyo, 2023 	2:05:36
Oceania 	Brett Robinson AUS		Fukuoka, 2022	2:07:31


WOMEN

Emily Sisson, U.S. (right), returns to Chicago after breaking North American record in 2022 with second-place finish
 
Africa		Tigst Assefa ETH 	Berlin, 2023  	2:11:53  
Europe 		Paula Radcliffe GBR 	London, 2003	2:15:25
North America	Emily Sisson USA 	Chicago, 2022	2:18:29
Asia 		Mizuki Noguchi JPN 	Berlin, 2005  	2:19:12  
Oceania 	Sinead Diver AUS 	Valencia, 2022	2:21:34
South America	Angie Orjuela COL	Berlin, 2023	2:25:35
	
World record holder Tigst Assefa (inset)
          

Sources: IAAF, Adidas 
Pictures: Adidas, Getty
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