| 4216 | 17 Oct 26 | Diablo Summit Stomp | 5K/10K/13.1M/30K | Walnut Creek, CA |
| 4217 | 06 Sep 26 | Diablo Trail Run | 4M/13.1M/26.2M/50K | Clayton, CA |
| 4218 | 10 Oct 26 | Dialysis Dash 5K | 5K | Grand Junction, CO |
| 4219 | 10 Jul 26 | Diamond City Mountain Relay | 215M | Townsend, MT |
| 4220 | 11 Jul 26 | Diamond in the Rough Triathlon | Olympic/Sprint Triathlon/Sprint Triathlon Relay | Perryville, MD |
| 4221 | 12 Sep 26 | Diamond Kid | youth triathlon | Blue Diamond, NV |
| 4222 | 13 Jun 26 | Diamond Klassik 5K | 3M | Conyers, GA |
| 4223 | 20 Sep 26 | Diamond Mountain Triathlon | supersprint duathlon/supersprint triathlon | Stony Point, NY |
| 4224 | 12 Sep 26 | Dick Beardsley Races | 5K/10K/13.1M | Detroit Lakes, MN |
| 4225 | 04 Jul 26 | Dick Bessel Independence Day Run | 2.3M | Grand Island, NY |
| 4226 | 26 Sep 26 | Dick Collins Firetrails | 26.2M/100K | Castro Valley, CA |
| 4227 | 01 Aug 26 | Dick Fitzgerald 2 Mile Beach Run | 2M | Hermosa Beach, CA |
| 4228 | 17 Oct 26 | Dick's-A-Thon | 3.9M/14.7M/26.3M | Seattle, WA |
| 4229 | 20 Jun 26 | Dickson Olympic and Sprint Triathlon | Olympic/Sprint Triathlon/Sprint Triathlon Relay | Burns, TN |
| 4230 | 25 Jul 26 | Dickson Street Mile | 1M | Fayetteville, AR |