I consider this invention in this blog the most basic multisport event. Having participated in biathlon (running & swimming) before, multisport events with "survival" aspects have grown on me so this is what could be the ULTIMATE ATHLETIC EVENT that any able-bodied person could participate in because it requires little to no equipment.
a) Two events in the running in the order 1) 1500 m & 2) 100 m run.
b) Typical Olympic 3) climbing event.
c) Swimming event: 4) 200 m swim & 5) 50 m swim. Both freestyle.
This multisport event could include javelin & be a sextathlon or kickboxing & wrestling (grappling) for a national TV game show version.
The event would be done in the order:
1) 1500 m run
2) 100 m sprint
3) climbing
4) 200 m swim
5) 50 m swim
6) javelin or kickboxing/Olympic wrestling (optional)
Two hour intervals between each event for athletes to rest.