Japanese Ekiden.
The Ekiden system is the engine behind Japan's dominance in the marathon. Named after the relay-race format central to Japanese university running, the method is characterised by extreme volume (200+ km/week for elites), intense Gasshuku training camps, and a team-first culture that uses group accountability to sustain efforts that would break individual athletes.
Philosophy and origin
Japan's university relay racing system (Ekiden) has produced more sub-2:10 marathon runners than any other national training system in the world. The method grows from a deeply embedded cultural belief that collective suffering, relentless consistency and extreme volume forge both physical endurance and mental resilience — the concept of 'ganbaru' (perseverance through hardship) made manifest in daily training. Legendary coaches like Kiyoshi Onishi and Yoshio Koide have refined the Ekiden system over five decades into a structured high-mileage model that consistently produces world-class marathon and long-distance runners from Japan's university system.
Volume and Gasshuku camps
Ekiden training centres on very high weekly mileage — 150-200+ km/week for university-level runners, with some elite programmes reaching 250 km/week during peak training blocks. The Gasshuku camp system is central to the method: multi-week residential training camps where athletes eat, sleep and run together as a team, often logging 40+ km per day across 2-3 sessions. These camps are physically demanding and mentally transformative — building not only aerobic capacity and musculoskeletal durability but also the group accountability and shared purpose that sustain high-volume training over months and years.
The relay culture
The Hakone Ekiden is the most-watched sporting event in Japan, drawing over 50 million television viewers each January. University teams of 10 runners each cover 217 km over two days between Tokyo and Hakone in a relay format. Each runner covers 20-23 km at near-maximum effort, carrying the sash (tasuki) that represents team honour. The team pressure, shared suffering and public accountability create a training motivation and competitive intensity that individual pursuits cannot match. This relay culture is the social engine that drives the Ekiden system's extreme training loads.
Key workouts
Morning doubles of 12-16 km at easy conversational pace, followed by afternoon sessions of 16-20 km with the final third progressively building to marathon pace. Long runs of 30-40 km on weekends at steady aerobic effort. Track interval sessions of 10x1000m or 5x2000m at VO2max intensity with 400m recovery jog. Recovery jogs of 8-10 km on days between quality sessions. The emphasis is always on cumulative weekly volume rather than any single heroic session — consistency over months, not peaks.
Who it suits
Advanced and elite runners only — the volume demands an existing training base of at least 80 km/week and the injury resilience that comes from years of consistent running. Recreational runners can productively borrow key Ekiden principles — high-volume base-building blocks, group training for motivation, the Gasshuku concept of focused multi-day training weekends, and the team accountability model — without attempting the extreme weekly mileage that university Ekiden teams sustain. The periodisation principles translate well to any distance from 10K to ultramarathon.
How STRIDD builds it
Select Ekiden in the Architect and enter your training history and current weekly volume. STRIDD adapts the high-volume Japanese model to your current fitness level and experience, building a plan with progressive weekly volume increases, double-run days on key training days, easy recovery days between quality sessions, and the characteristic Ekiden progression from high-volume base conditioning through race-specific sharpening. The plan scales mileage appropriately to your experience level — you do not need to run 200 km/week to benefit from Ekiden training principles.
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