Apparatus, method, and graphical user interface (GUI) for presentation and navigation of code path data. Code path data samples, including temporal data, related to a plurality of code paths of program code are used to render an interactive GUI including a set of graphical elements representing a corresponding set of code paths. Each graphical element indicates resource utilization changes associated with a respective code path over a time period. The set of graphical elements are visually arranged in a first dimension and the period of time is indicated in a second dimension. Different techniques are used to represent resource utilization over time including extending the graphical elements in a third dimension or changing a width of the graphical elements within a plane defined by the first dimension and the second dimension.