I am in the Army Reserves (12A). I live about 250 miles from my unit. Can I get reimbursed for travel (fuel)?

First of all you need to ask your unit DTA they maybe in S3 or even in S1, ask if your command allows travel /fuel reimbursement and then go from there, because as far as DTS yes you can do that but submitting it and it's not authorized will get your nowhere, will just be sent back or disapproved. The cost will come out of unit (BDE or give) funds so if it's not authorized then you won't get any reimbursement.

Sir,

USAR IDT-TRP Policy Memo dated 16MAR18, "By law, Soldiers authorized to participate in this program are limited to a maximum round-trip reimbursement of $500 per voucher for expenses incurred for travel of more than 150 miles one-way from Home of Record (HOR) to Unit of Assignment (UOA).......for Battle Training Assemblies (BTAs) or Rescheduled Training (RST). Reimbursement is limited to 12 vouchers per Fiscal Year."
KEY POINTS:
IDT-TRP is not an entitlement.
Your Geographic and Functional Command (GFC) Commands IDT-TRP policy will tell you if you or your unit is eligible. That policy will designate and prioritize their policy and the positions, units, and Military Occupational Specialties (MOS) eligible to participate in IDT-TRP in their commands.

If your unit is eligible, which I imagine it is, you will need to get a copy of the DA 1379 for the battle assembly. This is the from that you sign for each MUTA block. This will be your verification of attendance for the local voucher. You should also make friends with your S3 and become proficient with DTS, as you will be using it to submit your travel expense.

I !EAM, even if you tried switching to ARNG, I'd just wondered if anything might be closer...it just occurred to me to suggest it...either that, or maybe going interservice for something close, maybe USAFR or Air Natl Guard (ANG), I realize 259 mi isn't terribly far, of course....