Longmore Classic is a Cycling South Africa (CSA) sanctioned event and will be run according to CSA rules. 
A CSA day licenses is required for races longer than 20km.  If you don’t have a CSA membership license, you can purchase a day licence for R70 when entering.  

Age restrictions 

CSA  enforces minimum age restrictions based on race distances for all sanctioned MTB events.  Please only select a race distance that you are allowed to participate in.  Should a rider enter a distance that is incorrect, according to their age, the rider will be disqualified.   
Your age is based on the age you will be on 31 December of that year.
The responsibility for understanding and adhering to the rules and age restrictions, rest entirely with the rider.  By entering, you are confirming your acknowledgement of these rules and confirming you will abide by them.  

50km: 15 years +

50km E-bikes: 19 years +

30km E-bikes: 19 years +

30km: 13 years +

15km: 8 years +

All riders under 8 years are to be accompanied by an adult entered into the race.

For more info visit: http://www.cyclingsa.com/rules-and-regulations/

This event does not cater for gravel road bikes.