Arizona → Colorado · Interstate 10 / Interstate 19
The long-haul return between Tucson, Arizona, and Denver, Colorado — another 1173 km (729 miles) along Interstate 10 / Interstate 19 — closes a journey that hardly fits inside a single business day. Reserve another 11h 10m on the schedule and consider a second overnight if departure happens at the close of business hours. Anyone driving back from Tucson (the second-largest city in Arizona and gateway to the Sonoran Desert) often pulls into Denver (the Mile-High City and economic center of the Rocky Mountain region) over the weekend. Incremental fuel adds $98.07 (106.6 liters / 28.2 gallons). Return reimbursement reaches $504.39 at the $0.43/km tariff. Reconcile outbound and return inside a single Clara PDF, with hotels itemized as separate line items, so finance can reimburse the full bundle in one batch. Priority processing happens when all supporting documents (fuel invoice, toll receipt, hotel folio, meal receipts) sit attached in chronological order and identified by the originating project number. For trips longer than three days, the finance department may also require an executive visit summary attached, describing objectives achieved, agreed next steps, and the commercial indicators generated.