Answer: TENKS

AnswerCrossword Clue
TENKSMarathon warm-ups?
TENKSDistance runs
TENKSSome charity races
TENKSLong runs
TENKSMedium-distance races, informally
TENKSDistance runs, briefly
TENKSOlympics events
TENKSFairly long runs
TENKSSome races
TENKSDistance races
TENKSSome charity runs
TENKSMarathon warm-up races
TENKSSome distance races