| 3826 | 09 May 26 | Right to Run 5K | 5K | Seneca Falls, NY |
| 3827 | 11 Jul 26 | Rigby Lake Rumble Triathlon | Olympic/Sprint Triathlon/Sprint Triathlon Relay/youth triathlon | Rigby, ID |
| 3828 | 10 Jul 26 | Rigby Lake Rumble Kids Triathlon | youth triathlon | Rigby, ID |
| 3829 | 25 May 26 | Ridgewood Run | 1M/5K/10K | Ridgewood, NJ |
| 3830 | 14 Mar 26 | Ridgeview Wine Run 5K | 5K | New Tripoli, PA |
| 3831 | 23 May 26 | Ridgeline Ramble | 10K/20K | Eugene, OR |
| 3832 | 01 Aug 26 | Ridge Reaper Trail Runs | 25K/50K | Cross River, NY |
| 3833 | 21 Mar 26 | Ridge Healthcare Foundation 5K | 5K | Edgefield, SC |
| 3834 | 18 Apr 26 | Ride on Ryan Triathlon | Sprint Duathlon/Sprint Triathlon/Sprint Triathlon Relay/sprint duathlon relay | Savannah, GA |
| 3835 | 28 Mar 26 | Ricochet's Riot | 1M/5K/10K/25K/50K | Killeen, TX |
| 3836 | 21 Jun 26 | Ricky Byrdsong Memorial Race Against Hate | 5K/10K | Evanston, IL |
| 3837 | 02 May 26 | Ricky 267 5K | 5K | Union, NJ |
| 3838 | 13 Jun 26 | Rickney B. Hunter Miles for Minds 3K Running for Healing and Hope | 1M/3K | Bessemer, AL |
| 3839 | 21 Mar 26 | Richmond SPCA's Dog Jog, 5K and Block Party | 1M/5K | Richmond, VA |
| 3840 | 28 Feb 26 | Richland Runfest | 5K/10K/13.1M | Richland, WA |