Used attributively to describe things designed for or associated with runners (e.g., runner shorts); also used in botanical descriptions (runner plants).
He bought a pair of runner socks with extra cushioning for marathons.
Он купил пару беговых носков с дополнительной амортизацией для марафонов.
Runner strawberry varieties can quickly cover an entire garden bed.
Усовые сорта клубники могут быстро покрыть всю грядку.