Business & farm

" As such, it doesn't show up on Schedule C as I think I am supposed to show it."

It is not clear whether you received a K-1 from a partnership (multi-member LLC) or a trust since you wrote "LLC trust".

Regardless, K-1 income that you enter into your personal income tax return will not appear on Schedule C, which form is essentially for sole proprietorships. 

If you have a K-1 that is reporting something like net income from self-employment, then most likely a Schedule SE will be generated to calculate self-employment tax, but the income will not appear on Schedule C.