Run Wild Missoula is holding its 23rd annual Pumpkin Run at Silver Park this weekend. The run will be on Sunday the 21st and proceeds from the run will benefit energy efficiency measures at the new Missoula Public Library.

Here's how to register, from the event's Facebook page:

Registration:
•400 Meter Kids Run; Ages 12 and Under
-Fee: $4.00 registration fee, discounts do not apply.

•5K; All Ages
-$15.00 through 12:00 PM on Thursday, October 18th
-$17.00 after 12:01 PM October 18th through race day via RunSignUp

Will you be doing the run on Sunday?