Kammala wannan jumla: A cikin 1925 Sipilä ya karya tarihin duniya a nesa mara kyau na mita 20,000, yana gudana 1:06:29.0 a Stockholm kuma ya karya rikodin Ville Kyrönen na 1:07:07.2 daga shekarar da ta gabata. A Wasannin Olympics na 1928, Sipilä ya wakilci Finland a cikin gasar Olympics na 1928.
marathon, amma ya kasance na 15 ne kawai; wata daya bayan wasannin Olympics ya karya tarihin duniya na mita 30,000 a Tampere, yana gudana 1:43:07.8. A cikin wannan tseren, Martti Marttelin ya karya tarihin duniya na 25,000 m a matsayin raba.