Colo. Rev. Stat. § 30-2-107
Sheriffs also shall be allowed actual traveling expenses payable out of the general county fund, upon certified itemized accounts being presented for the same, in the service of all warrants, capiases, mittimuses, commitments, body attachments, and court orders requiring the same and in the performance of the official duties in the investigation and pursuit of law violators throughout the state of Colorado in such amount as shall be determined by resolution of the board of county commissioners of each county or as provided by the charter of a home rule county, within the limits provided under section 30-11-107(1)(t); but the actual expenses incurred in the service of executions, writs of attachment, replevins, restitutions, and other process shall be paid by the parties requiring such service. All such accounts shall be subject to the approval of the board of county commissioners.
C.R.S. § 30-2-107