Modern pentathlon's governing body (UIPM) said it has selected two variations of obstacle racing for testing from more than 60 options as it looks to replace the equestrian element in the sport from the 2028 Los Angeles Olympics.
The UIPM had said in November it would determine a suitable replacement for equestrianism through a consultation process.
That decision came after German coach Kim Raisner struck a horse at last year's Tokyo Games when it refused to jump a fence, which led to widespread criticism of the sport.