For Pickleball - If at all possible, have someone in your "bubble" as your partner; if partnered with someone outside your "bubble", keep your distance and call the ball so you both don't go for it; toss or hit the ball rather than hand it to someone who needs to serve; don't gather closely at the benches/sidelines, etc.. An article in USAPA Pickleball talks about COVID-19 and Pickleball.
For bike riding - The ride leader should have the ride appropriately mapped out to consider COVID-19 changes in business openings, chip seal etc., and there should not need to be discussion at the start of the ride in close quarters about how to change the route. Of course, riders should not pull up next to each other and talk. When stopping at an intersection, stay 6 feet apart, don't all gather at the corner. Articles in Bicycling magazine, Outside magazine and MapMyRun talk about the aerodynamics of cycling suggest that COVID-19 could be spread for a much longer distances than 6 feet when cycling, so staying well back behind another rider is recommended. Pace lines and the like are not recommended.
Being outside certainly helps decrease the transmission, but social distancing, even outside, is still recommended. And everyone should bring a mask to an event even if they think they don't need it; don't lift it or take it off to drink your coffee or beer or water or whatever if you are closer than 6 feet from others.
- CDC on parks: https://www.cdc.gov/coronavirus/2019-ncov/daily-life-coping/visitors.html
- CDC on youth sports: https://www.cdc.gov/coronavirus/2019-ncov/community/schools-childcare/youth-sports.html
- NYS on parks with links to other activities like hunting, golfing, etc.: https://www.dec.ny.gov/outdoor/119881.html
- Monroe County: https://www2.monroecounty.gov/health-covid-19-masks-info