Isidro Callejas

Callejas began karting in 2014, competing until 2019.^[1] During his karting career, Callejas most notably won the Micro class of the Spanish Rotax Series in 2015,^[2] as well as finishing third in the Alevin standings of the Spanish Karting Championship.^[3] In 2018, Callejas represented Spain in the Karting Academy Trophy, finishing ninth in points in his only season in the series.^[4]

Moving up to cars in 2019, Callejas raced in the Copa Kobe de Circuitos, finishing ninth in points with a best result of fourth at Jarama.^[5] The following year, Callejas moved to Chefo Sport to compete in Renault Clio Cup Spain and the CER D2 class of Campeonato de España de Resistencia.^[6] In the former, Callejas won both races at Jerez and took three more podiums to secure third in points despite missing the finale.^[7] In the latter, Callejas scored a lone win at Valencia and four other podiums to also finish third in points.^[8] During 2020, Callejas also made a one-off appearance in TCR Ibérico for the same team at Jerez.^[9]

Stepping up to TCR full time in 2021, Callejas joined Brutal Fish Racing Team to compete in TCR Europe.^[10] In his first season in the series, Callejas scored his only podium of the season at Zandvoort,^[11] as well as his only pole position at the Nürburgring en route to an 11th-place points finish,^[12] as the rookie champion.^[13] During 2021, Callejas also made select appearances in TCR Spain for Escudería Costa Daurada and Volcano Motorsport, scoring four podiums and finishing sixth in points.^[14]

The following year, Callejas returned to Volcano Motorsport for a dual campaign in TCR Europe and TCR Spain.^[15][16] In TCR Europe, Callejas became the series' youngest race winner at Spa, and scored points in all but one race he started to end the year fourth in points.^[17] In TCR Spain, Callejas began the year by scoring four wins between the Jarama and Jerez rounds,^[18][19] before taking further wins at Aragón and Navarra,^[20][21] and ending the year with a triple win at Barcelona to clinch the series title.^[22] During 2022, Callejas represented Spain in the FIA Motorsport Games Touring Car Cup,^[23] in which he scored a silver medal in the main race.^[24]