If we look at the last two bull runs, we can notice that before each one, LTC had approximately the same price as today ($80), and that at its peak it reached around $350. The only question is whether LTC is of any interest to anyone anymore, given that it is no longer in the top 10 coins, and it could very easily fall out of the top 20 when it comes to market cap.
However, it seems to me a much easier mission to double the price of LTC than BTC, because the path to $100k for BTC will not be easy at all, and that psychological limit is the exit point for many.