If they were spread evenly, that's 30k apiece. May not be worth consolidating.
Questions:
How many miles and on which carriers?
What are your reward goals?
Most (not all) airline miles can be transferred via the Hilton HHonors Reward Exchange. However, there's significant devaluation in the process.
Up to 25,000 CO miles can be transferred per year to UA via Amtrak. (Also, Midwest Express miles to UA via Amtrak)
But whether any of this is advisable really depends on what you want to get out of your miles.
In some cases it can be pretty easy to accumulate miles with a program in order to reach a reward, so you may mention what credit cards you carry and what phone service provider you use.
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More Room Throughout Coach: the Website of Free Miles and Free Markets