El Reto del Indio takes place in deep tropical rainforest, during night hours and across technical terrain. These regulations exist for your safety and environmental preservation. Please read them thoroughly before registering.
Regulations
Rules by Category
Click each section to view complete regulations.
Registration is strictly personal and non-transferable. Once confirmed:
- Distance changes are permitted up to 30 days prior to the event, subject to slot availability.
- Refunds follow the official policy listed on UltraSignup; no refunds inside the 30-day window.
- Unauthorized bib transfers to another person are strictly prohibited for emergency and medical insurance reasons.
Every runner must carry mandatory gear throughout the entire race. Random gear checks occur at aid stations.
- Primary headlamp with spare batteries (mandatory for night start).
- Minimum 1.5 L water capacity hydration vest / flasks.
- Emergency space blanket, whistle, and hooded waterproof rain jacket.
- Powered phone with emergency contact number saved.
View the complete list on the Mandatory Gear page.
Designated aid stations have strict cut-off times. Any runner arriving after cut-off must withdraw from the race for safety reasons.
- 100 Miles: maximum overall limit of ~38 hours (closing Sunday 8:00 AM).
- 105K: maximum overall limit of ~25 hours.
- 55K: maximum overall limit of ~12 hours.
- Station cut-offs are published on the Aid Stations page.
El Reto del Indio is built on camaraderie and environmental respect. All runners must adhere to:
- Strict Leave No Trace policy: zero littering (gel wrappers, cups) on the course.
- Mutual support: helping fellow runners in distress and respecting local communities.
- Following official trail markers; cutting switchbacks or off-trail shortcuts is strictly forbidden.
Immediate disqualification (DNF) applies for:
- Missing mandatory gear items during a check.
- Receiving unauthorized crew assistance outside designated aid station zones.
- Littering anywhere on the rainforest trail.
- Unsportsmanlike behavior towards volunteers, staff, or local residents.
