[OC] Zwischenzeiten beim Richmond-Marathon 2025: Eine enge Spanne mit gleichmäßigem Tempo unter den schnellsten Finishern

* Data source: direct from listing site [https://www.richmondmarathon.org/results/year-by-year-results/](https://www.richmondmarathon.org/results/year-by-year-results/)

* Tools: R and ggplot2

Full analysis: [https://rivercitydatascience.com/analysis/rva-marathon/](https://rivercitydatascience.com/analysis/rva-marathon/)

A *positive split* (red) is when the second half is slower than the first (e.g., 2:00 first half vs 2:30 second half). A *negative split* (green) is the opposite. We defined *even splits* as halves within ±2% of each other (yellow).

Each point shows a runner’s first‑half vs second‑half time from the 2025 Richmond Marathon. The fastest finishers (Boston‑qualifying times, blue) cluster tightly near the even‑split diagonal, while the overall field shows a much wider distribution with many large positive splits