Thanks for the question! There are a couple of camping options near Eugene. I think the best one is Armitage County Park. It’s about equal distance to Hop Valley and Agrarian Ales. You could actually bike to both, there is a very wide shoulder or bike lanes. The campground is also conveniently located to Coburg Road which runs right into downtown Eugene and close to Interstate 5. The price is a little on the expensive side because the sites are really catered to RV camping. Some other campgrounds that are just a little further away from the city center are Schwarz Park in Cottage Grove on Dorena Lake, Sharps Creek in Cottage Grove and Richardson Park along the shores of Fern Ridge.
I hope this helps. There are more options if you look for sites near Fall Creek Reservoir, Blue River Reservoir and out towards the coast in the Whittaker Recreation Area (not the same Whittaker as the new Brewery District in Eugene).