Ryuutaro Kuroiwa 黒岩 龍太郎
Japan (JPN)
| 2021 Meiji Hokkaido Tokachi Oval Speed Skating Competition Round 2 ２０２１明治北海道十勝オーバルスピードスケート競技会第２戦 | Obihiro (JPN) | 9 - 10 October 2021 | ||||||||||||||||
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| 2021 Nagane Summer Competition 2021 長根サマースピードスケート競技会 | Hachinohe - YS Arena (JPN) | 21 - 22 August 2021 | ||||||||||||||||
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| 40th All Japan Student Speed Skating Championships | Shibukawa (JPN) | 28 - 29 November 2020 | ||||||||||||||||
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| 28th Tomakomai Highland Speed Skating Competition | Tomakomai (JPN) | 14 - 15 November 2020 | ||||||||||||||||
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| 2020 Obihiro Forest Speed Skating Competition | Obihiro (JPN) | 6 - 8 November 2020 | ||||||||||||||||
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| 2020 Meiji Hokkaido Tokachi Oval Speed Skating Competition Round 2 | Obihiro (JPN) | 10 - 11 October 2020 | ||||||||||||||||
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| 2020 Meiji Hokkaido Tokachi Oval Competition | Obihiro (JPN) | 5 - 6 September 2020 | ||||||||||||||||
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| 18th M Wave Competition | Nagano (JPN) | 7 - 9 February 2020 | ||||||||||||||||
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| 26th Seiko Oval Night Competition | Fujiyoshida (JPN) | 14 - 15 December 2019 | ||||||||||||||||
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| Yamanashi Open Competition | Fujiyoshida (JPN) | 6 - 7 December 2019 | ||||||||||||||||
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Native Language Names