Ryōichi Sekiya

{{short description|Japanese long-distance runner}}

{{Use dmy dates|date=March 2020}}

{{Infobox sportsperson

| name = Ryoichi Sekiya

| image = 2009 SCUltraMarathon Closing Hwang and two Champions.jpg

| caption = Ryōichi Sekiya (left) and Mami Kudo (right), winners of the 2009 SCUltraMarathon

| fullname =

| birth_date = {{Birth date and age|1967|2|12}}

| birth_place = Sagamihara, Kanagawa

| country = Japan

| sport = marathon, ultramarathon

| height = {{convert|183|cm|ftin|abbr=on}}

| weight =

| medaltemplates =

}}

{{Nihongo|Ryōichi Sekiya|關家 良一|Sekiya Ryōichi |born 12 February 1967}} is a Japanese ultramarathon and marathon runner from Sagamihara, Kanagawa. He is the current Asian record holder of the 24-hour run with the distance of {{convert|274.884|km|miles|abbr=on}}, which he achieved in 2007 at Soochow International Ultra-Marathon.{{Cite web|url=http://planetultramarathon.wordpress.com/2009/12/05/world-24hr-and-100km-current-records-dec-09/|title=World 24hr and 100km current records – Dec 09|date=4 December 2009}} He is a four-time IAU 24 Hour World Championship winner, which makes him the athlete with the most wins in the event.{{Cite web|url=http://www.iaaf.org/disciplines/ultra-running/ultra-running|title = Ultra Running}}

Other notable wins of Sekiya include eight wins at the IAU-endorsed Soochow International Ultra-Marathon held in Taipei. He first won the event in 2001, and won in seven consecutive years in 2005, 2007, 2008, 2009,{{cite web |url=http://physical2.idc.scu.edu.tw/zax/jp/minutes/minutes.html |title=東吳國際超級馬拉松 Soochow International Ultra-Marathon |accessdate=2014-02-26 |url-status=dead |archiveurl=https://web.archive.org/web/20140302195431/http://physical2.idc.scu.edu.tw/zax/jp/minutes/minutes.html |archivedate=2014-03-02 }} 2010,{{cite web |url=http://ultrarunning.scu.edu.tw/scu-ultra/www/score_data.php |title=東吳國際超級馬拉松 Soochow International Ultra-Marathon |accessdate=2014-02-26 |url-status=dead |archiveurl=https://web.archive.org/web/20140302200132/http://ultrarunning.scu.edu.tw/scu-ultra/www/score_data.php |archivedate=2014-03-02 }} 2011,{{Cite web|url=http://runitfast.com/2011/12/09/scott-jurek-chasing-record-at-soochow-international-24-hour-ultra-in-taiwan-updates/|title = Scott Jurek Chasing Record at Soochow International 24-Hour Ultra in Taiwan (Results)|date = 9 December 2011}} and 2012 (there was no event in 2006).{{Cite web|url=http://multidays.com/soochow-international-24-hour-ultramarathon-2012/|title = Soochow International 24 Hour Ultramarathon 2012|date = 9 December 2012}}

Sekiya won the {{convert|153|mile|km}} Spartathlon Ultra Race in Greece in 2002 and 2009.