noun
A race in which team members take turns running segments, passing a baton.
運動会でリレーレースに出た。
I ran in the relay race at the sports day.
リレーレースのバトンパスは練習が大切だ。
Practicing the baton pass is important in a relay race.
Variant with interpunct; less common in running text.
リレー is a broader term for 'relay' in general (e.g., electrical relay, broadcasting relay), while リレーレース specifically refers to a relay race in sports.
Wasei-eigo (Japanese-made English) combining 'relay' and 'race'.