Rieju Marathon 500
The Rieju Marathon 500 is a dual-sport/enduro motorcycle produced by the Spanish manufacturer Rieju, a company founded in 1934 in Figueres, Catalonia. The Marathon series was developed to compete in the adventure and trail segment, leveraging Rieju's strong heritage in off-road and enduro motorcycles. The 500cc variant represents one of the larger displacement offerings in the Marathon lineup, targeting riders seeking capable on/off-road performance with a mid-sized engine.
~40–45 hp (estimated; exact rpm data unavailable — NOTE: Rieju has not widely published official dyno figures for this specific variant)
Power
~40–45 Nm (estimated; NOTE: official figures not widely confirmed in public documentation)
Torque
~140–155 kg
Weight
~140–150 km/h (estimated)
Top Speed
~3.5–4.5 L/100km (estimated; varies significantly with riding style and terrain)
Fuel
Naked
Body
What Buyers Should Know
KTM Engine Roots
The Rieju Marathon 500 uses a Rotax-derived engine with strong KTM lineage, giving it a well-proven powerplant with established parts availability. This shared DNA means mechanics familiar with KTM adventure bikes can service it with confidence.
Watch Electrical Gremlins
Early Marathon 500 models are known to have intermittent electrical issues, particularly with the fuel injection system and wiring connectors in off-road conditions. Inspecting the harness and connectors before purchase is strongly recommended.
Lower Resale Value
As a lesser-known Spanish brand, the Marathon 500 depreciates faster than comparable KTM or Husqvarna adventure bikes, making used examples excellent value for buyers. However, this also means reselling later may require patience to find the right buyer.
Full Specifications
Rivals & Alternatives
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