Marathon Petroleum Long Term Debt

The latest long-term debt for MPC is $32B as of March 2026. That compares with $28B in the prior-year period — up 14.6% year over year. Investors often review this figure alongside Marathon Petroleum's historical trend and sector peers before judging valuation or financial health.

Over the past year, MPC's long-term debt moved from $28B to $32B — a 14.6% year-over-year increase. If the trend continues in the same direction for several quarters, it can signal a meaningful shift in Marathon Petroleum's operating scale or balance-sheet position.

A long-term debt figure of $32B for MPC is a snapshot of scale on that line item. On its own it does not say whether the business is healthy — you also want growth rate, margins, and how the number compares with similar companies. Explore the charts below for those layers of context.

After noting MPC's long-term debt ($32B), review year-over-year change from $28B, peer averages, and a few neighboring metrics such as revenue, margins, or valuation multiples. That combination usually beats staring at a single figure. The navigation links on this page jump you to those related views.

This page's peer comparison chart is the fastest way to stack Marathon Petroleum's long-term debt against similar Energy names. You can also browse sector and industry screens on Stockcircle for a broader set of Energy companies and their key multiples and fundamentals.