noun
foot race; sprint
Colloquial and rare synonym for かけっこ; used mainly in casual speech, often by children.
See also: かけっこ
放課後、みんなでかけっくらをした。
After school, we all had a foot race.
かけっくらで一番になったよ！
I came first in the sprint!
The standard, common word for a foot race or sprint. かけっくら is a rare, colloquial variant with the same meaning.
Likely a colloquial variant of かけっこ (foot race), with the ending くら possibly influenced by mimetic or child-speak patterns. The exact derivation is uncertain.