Entry Registration

Online registration for the 2023 Tropic Air 10to4 Mountain Bike Challenge is now closed.

If you would like to enter a race in the 2023 Tropic Air 10to4 Mountain Bike Challenge but were unable to register before the closing date, please get in touch as we may be able to accept late entries if places become available due to cancellations.  Please note, however, that there will be a 15% surcharge for all late entries, and you won't get a tee-shirt as the order was submitted on 1st February.


Medical and Waiver Forms

Before racing, you must submit Waiver and Medical Forms, ideally well in advance of the Event. 

The Medical Form can be completed online by following this link

To complete the Waiver, please visit the Terms and Conditions page

Cancellation Policy

The cancellation policy for the Tropic Air 10to4 can be downloaded here - Cancellation Policy

Emergency Procedure

  • The race operates in remote locations. If you are involved in or witness an accident, please report immediately to the emergency contact number (available closer to the event) or a water stop. Basic first aid will be administered at all water stops, and along the route by ambulances and sweeper cars.
  • For serious incidents, the Tropic Air helicopter will evacuate participants to Cottage Hospital, Nanyuki or to an airstrip, for onwards AMREF Flying Doctor medical evacuation pickup to Nairobi.
  • By signing the disclaimer, the participant agrees to all hospital or medical centre charges, and any ongoing medical expenses, to be the sole responsibility of the participant.

PLEASE NOTE – in an emergency, it can be very difficult to organise air-evacuation from health care insurers, even if you have evacuation cover. Without cover, air evacuation alone can cost $4,000 and must be paid prior to flight. One of the quickest and safest way to evacuate in Kenya is via AMREF You can purchase membership for the event for just 1,600KSh on your entry form. Please also provide the correct valid health care insurance and/or AMREF membership information on entry, to make an emergency situation efficient.

Entry List

All of the starting lists will be available on this password-protected website page from Monday 20th February 2023.  If you are a 2023 competitor you will be sent the password by email.  If you have registered to race and your name is not on the relevant list, please contact immediately.

Event Schedule

The full schedule of events, including times, dates and locations of pre-event registration, on-site registration, race briefings, and race start times can be found here. Please note, this schedule is subject to change and while we'll do everything we can to keep competitors notified via the WhatsApp group, it is ultimately your responsibility to ensure that you're in the right place at the right time, so please keep an eye on the Schedule page!

Covid-19 Protocol

All aspects of the event will take place under the guidance of the Government of Kenya Ministry of Health COVID-19 protocol regulations.  

Water Stops

Water stops are situated along the routes. Each water stop is there to provide water to competitors and is equipped with basic first aid to help with minor medical complaints. 

Wildlife Safety

The Tropic Air 10to4 routes run through alpine moors, indigenous forests and lowland savannahs so animals are likely to be seen during the race. When racing it is important to stay on the designated course and routes will be cleared ahead of the start. There will be armed rangers located around the course, however you will be required to sign a disclaimer (or a parent or guardian for those under 18) and race at your own risk. The utmost care will be taken to keep you safe on the course.

For more information, check out our FAQs here>>