Marathon Watches

Marathon Watches – Military Precision, Built for Professionals

Marathon Watches represent the pinnacle of durability and precision engineering. Founded in 1939 and headquartered in Canada, Marathon is one of the few watchmakers that still supplies timepieces directly to military forces — including the U.S. Army, Navy, and Canadian Armed Forces.

Each Marathon watch is crafted to meet strict military specifications (MIL-SPEC) and undergoes rigorous testing for performance in extreme environments. Whether it’s the GSAR, TSAR, or Pilot’s Chronograph, these timepieces feature self-illuminating tritium gas tubes, high-torque quartz or automatic movements, and cases built to withstand the most demanding missions.

At Grimsmo Watches, our curated Marathon collection celebrates this uncompromising standard of reliability. These watches aren’t just built to last — they’re built to serve. Ideal for collectors, professionals, and adventurers who demand authentic field-tested performance.