I'm thinking of doing the solo category.
It's called the taxes challenge adventure race. the race is staged at the KL Ranch on river road on the banks of the Guadalupe River.
1) solo: (mail & female)
2) two person: (male & female & coed)
3) Coed masters: both 40 or over
6-10 miles of trekking (running on trails)
1-3 miles Conoeing
15-25 miles of mountain biking