I'm biased as a Congress reporter/runner signed up for Marine Corps Marathon, but this is a fascinating piece from 2023 about how national politics & world events impact the DC running community
On Friday, June 14th DC Water will introduce non-toxic, biodegradable green dye into Rock Creek to locate and observe the outfalls along the creek. This will cause creek water to become green. Moving water will flush and disperse the dye throughout the day.