| Participant | Country | Team |
|---|---|---|
| Renāte Lapinska | 🇱🇻 LAT | — |
| Ričards Grāvītis | 🇱🇻 LAT | Jelgavas Ledus sporta skola |
| Ričards Ziemelis | 🇱🇻 LAT | — |
| Richard Müller | 🇪🇪 EST | — |
| Rimma Bērziņa | 🇱🇻 LAT | — |
| Rinalds Larsens | 🇱🇻 LAT | — |
| Rinalds Veinbergs | 🇱🇻 LAT | Run With Anita |
| Ritvars Sluga | 🇱🇻 LAT | — |
| Ritvars Šterns | 🇱🇻 LAT | — |
| Roberts Dakteris | 🇱🇻 LAT | — |
| Roberts Kleinbergs | 🇱🇻 LAT | — |
| Roberts Kristofers Napituhins | 🇱🇻 LAT | Rīgas sporta skolas "Rīdzene" We are so back!❤️🔝🕊️ |
| Roberts Lehtla | 🇱🇻 LAT | No Finish Line |
| Roberts Lulle | 🇱🇻 LAT | Ogre OK |
| Roberts Skroms | 🇱🇻 LAT | FOLKMAŅI |
| Roberts Šmitiņš | 🇱🇻 LAT | — |
| Roberts Trillo | 🇱🇻 LAT | — |
| Roberts Vanags | 🇱🇻 LAT | Orientēšanās klubs Alnis |
| Robins Zaščerinskis | 🇱🇻 LAT | — |
| Rolands Kozlovs | 🇱🇻 LAT | Latvijas Nacionālā Aizsardzības Akadēmija |
| Rolands Šķirmants | 🇱🇻 LAT | — |
| Rolands Zunde | 🇱🇻 LAT | — |
| Romāns Žabinskis | 🇱🇻 LAT | Maratona klubs |
| Rūdolfs Ričards Andersons | 🇱🇻 LAT | — |
| Ruslans Čābūts | 🇱🇻 LAT | — |
| Rūta Froļenkova | 🇱🇻 LAT | — |
| Rūta Mellenberga | 🇱🇻 LAT | — |
| Rūta Mūrēna | 🇱🇻 LAT | — |
| Sabīne Tērauda | 🇱🇻 LAT | — |
| Salvis Šķirus | 🇱🇻 LAT | Jelgavas Specializētā peldēšanas skola |
| Samanta Amanda Gulbe | 🇱🇻 LAT | Tavasriepas.lv |
| Samanta Andzena | 🇱🇻 LAT | Sportland |
| Samanta Vdovičenko | 🇱🇻 LAT | — |
| Sandija Sorokina | 🇱🇻 LAT | Saule, Pērkons, Daugava |
| Sandis Laizāns | 🇱🇻 LAT | Circle k |
| Sandra Dervinika | 🇱🇻 LAT | — |
| Sandra Stūrīte | 🇱🇻 LAT | — |
| Sanija Gasparoviča | 🇱🇻 LAT | Jelgavas Spīdolas Valsts ģimnāzija |
| Sanita Ukina | 🇱🇻 LAT | — |
| Sanita Zērvena | 🇱🇻 LAT | — |
| Santa Bērtule | 🇱🇻 LAT | — |
| Santa Mickus | 🇱🇻 LAT | Maratona klubs |
| Santa Šarka | 🇱🇻 LAT | SAK Pastališķi |
| Sarah Lavallée | 🇨🇦 CAN | FauconsTAD |
| Šarlote Greivule | 🇱🇻 LAT | — |
| Sergejs Fomenko | 🇱🇻 LAT | — |
| Sergejs Juhno | 🇱🇻 LAT | Born2win |
| Sergejs Kovaļonoks | 🇱🇻 LAT | — |
| Sergejs Minčenko | 🇱🇻 LAT | — |
| Sergejs Sevcuks | 🇬🇧 GBR | — |
