A brief review and classification of technology in general begins the paper, followed by an application of the classification to two specific marathon case studies: the 2018 Boston marathon and the 2017 Nike Breaking2 Project marathon. Then concepts from an array of sport philosophers are discussed to suggest an explanation for why each of the case studies strikes us as problematic. The conclusion provides a reasonable explanation for our misgivings, as well as an indication of how we might evaluate sporting (...) endeavors in the face of increasing technological innovation. (shrink)