San Diego River Days — river stewardship festival

San Diego River Days is basically a big, spread-out invitation to stop ignoring the San Diego River. The 2026 festival starts Saturday, May 9, and runs through Sunday, May 17. It is organized by the San Diego River Park Foundation with roughly 20 partner groups, and the pitch is simple — get people onto the river through free events, then turn that attention into stewardship. The result is less a single festival site and more a nine-day map of walks, cleanups, art events, birding, biking, and family nature programming along the whole corridor. ### What is River Days, exactly? It is the foundation’s 23rd annual River Days celebration — a multi-event program built around the idea that the river is a cultural, ecological, and recreational asset, not just a channel people drive past on the freeway. The official calendar stretches from the mountains near Julian to the coast at Ocean Beach, which matters because the San Diego River itself runs 52 miles from inland watershed to ocean mouth. ### What starts the festival? The kickoff event is the River Days 5K Walk for Wildlife and Fun Run on Saturday, May 9, from 7:30 a.m. to 10 a.m. at Riverwalk Golf Club in Mission Valley. This one is the exception to the mostly free lineup — it is framed as a fundraiser for wildlife conservation in the San Diego River watershed. The foundation even says it has closed the golf course that day to create a special 5K route along and over the river. ### What can people actually do? A lot, and that is the point. On opening day alone, people can join a Famosa Slough work party, take a wildflower and watershed hike at Crestridge Ecological Reserve, or do a relaxed “Bikes & Birds” ride along the river trail. Later in the run, there are guided bird walks, a San Diego River Mouth interpretive walk by OB Dog Beach's Event. ### Why so many bird and wildlife events? Because the festival is trying to make the river legible as habitat. A bird walk or BioBlitz is easier for most people to connect with than a lecture about watershed management. The Grant Park bird walk, for example, asks participants to observe and count species and log sightings on iNaturalist. That turns a casual outing into citizen science — not in a grand way, but in a useful one. ### Where does cleanup fit in? Cleanup is the practical backbone. Some events are explicitly about removing trash, invasive plants, and other pollution threats from river-adjacent habitat. The broader foundation pitch is that a healthy river means a healthy community, and its volunteer work is already framed around trash removal, habitat management, education, and public engagement work — it is a very public on-ramp into it. ### Why does the geography matter? Because the San Diego River crosses a lot of different San Diegos. Mission Valley, East County preserves, wetlands near the estuary, and the river mouth by the beach all show up in the same program. That gives people a more complete picture of what a watershed is — not one park, but a connected system. The festival’s “Julian to Ocean Beach” framing is doing real work here. ### So what is the bigger idea? The bigger idea is that access creates political and civic value. If people run beside the river, count birds there, bring kids to a bat walk, or spend a morning pulling invasive plants, they are more likely to care about restoration, park building, and long-term conservation. The river stops being background infrastructure and starts feeling like shared public space. That is the foundation’s mission in a nutshell. ### Bottom line? River Days is a stewardship festival disguised as a fun weekend calendar. The fun is real — but the deeper goal is to build a constituency for a cleaner, more visible, more used San Diego River.