There are many different synonyms to describe a "running family". One might call them a "fitness family", "active family", or "health-conscious family". Other options include "athletic family", "sporty family", or simply a "fit family". If the family is particularly dedicated to running, they might be called a "running clan" or "jogging family". Additionally, they could be referred to as a "track family", "marathon family", or "road race family". Whatever the label, these families prioritize exercise and physical activity as a central part of their daily lives.