Houben was national champion in the 100 m. Complete the following sentence: Houben was national champion in the 100 m. Houben was national champion in the 100 m. <unk> <unk> <unk> <unk> <unk>
4 × 100 m relay at the 1920 Summer Olympics. Houben later switched to bobsleigh, in which he competed at the 1928<unk>1948 Winter Olympics, becoming the first Belgian to take part in both Winter and Summer Olympics.