Every crossing operates with 24/7 medical, nautical and technical escort, from start to finish. You are accompanied by an exclusive Support Boat, a certified captain, a paramedic on board with oxygen and AED, and an escort kayaker. We hold the official permits of the Harbor Master's Office and the Mexican Navy. We document every crossing with GPS and a log for WOWSA and MSF registration.

For Solo, Duo, Triple and Multiple we ask for a minimum of 5 continuous hours of swimming in open sea or lake (no pools). For Relays, 3 continuous hours (10–15 km). You must prove it with documentation.

The minimum speed is a sustained 3 km/h. It is a safety measure: our team may pull from the crossing any swimmer who cannot maintain it.

Yes, in the 27 km Single Crossing and case by case. The 54 km Double Crossing is for adults only. MCS sets no minimum age: we assess each request individually (age, experience, maturity, physical condition, medical opinion, distance and format) and reserve the right to accept or decline the minor. Participation requires the Parent/Guardian Authorization and Waiver and a responsible adult on board throughout the crossing.

We do not recommend it. In the Cozumel Channel a wetsuit is unnecessary and can cause thermal suffocation (overheating), which puts the swimmer’s safety at risk. The MCS ranking does not distinguish between swimmers with and without a wetsuit. If a swimmer insists on using one, we record it in the ranking’s Observations column: a wetsuit makes the swimmer faster, and that must be taken into account.

A 10% non-refundable deposit, paid when you submit your Single Registration Form, secures your slot. You can pay the remaining 90% in a single payment, in 3 installments, or in up to 12 interest-free monthly installments. Full payment is due at least 15 days before the crossing.

If swimming is not possible on any day of your slot due to force majeure, you choose one of these options: a 75% refund of the amount paid (25% covers permits and insurance already paid); a new slot the following season, paying only 25% of the crossing value; or rescheduling within your stay, if availability allows.

Yes. The companions included in your Quotation can come on board. Each must meet and sign the Onboard Companion Profile. The Riviera Maya / Plan Your Trip section is also designed so your family or team can have their own experience while you prepare and swim.

We recommend the host hotel proposed by MCS, with which we have an agreement and a special rate for our swimmers. The crossing usually starts from its pier. Staying there is a recommendation, not a requirement: if you prefer another hotel in Cozumel, we take you to the start point at no cost on the day of your crossing.

The cost includes: official permits; event medical insurance (it covers what the current policy states); Support Boat with captain and deckhand; paramedic with oxygen and AED; nautical chart and GPS; drone photography and video, and photography from the boat; official crossing certificate; ranking entry; transfer to the start point if you stay outside the host hotel; and full assistance. The escort kayak is mandatory and has an additional cost. We confirm the amount at your personalized interview.

Your date is assigned on a first-come, first-served basis, once your registration is complete and your interview is confirmed. The exact day within your slot is decided according to sea conditions and the maritime authority's instructions.