| Sentiero Francescano | IT | 38 km | 2 stages |
| Sentiero Italia | ITFRCHAT | 7,086 km | 466 stages |
| Sentiero Lago di Lugano | CHIT | 146 km | 9 stages |
| Sentiero Lazzaro Spallanzani | IT | 127 km | 8 stages |
| Sentiero Liguria | IT | 464 km | 29 stages |
| Sentiero Monsignor Giovanni Antonioli | IT | 112 km | 10 stages |
| Sentiero San Vili alto | IT | 99 km | 5 stages |
| Sentiero San Vili basso | IT | 98 km | 6 stages |
| Setau Sagèth | ES | 105 km | 8 stages |
| Sevedeleden | SE | 97 km | 6 stages |
| Severn Way | GB | 363 km | 17 stages |
| Sevniška planinska pot | SI | 107 km | 7 stages |
| Shakespeare's Avon Way | GB | 152 km | 7 stages |
| Shakespeare's Way | GB | 171 km | 8 stages |
| Sheep's Head Way | IE | 93 km | 5 stages |
| Shropshire Way | GB | 296 km | 15 stages |
| SI | IT | 112 km | 7 stages |
| Siegerland-Höhenring Raute1 | DE | 146 km | 8 stages |
| Sieghöhenweg | DE | 106 km | 5 stages |
| Sieraków - Słopanowo | PL | 101 km | 5 stages |
| Sierras Riojanas | ES | 187 km | 11 stages |
| Signatur Helt på grensen | NO | 121 km | 8 stages |
| Signatur Lysefjorden rundt | NO | 91 km | 8 stages |
| Signatur Norge på tvers | NO | 118 km | 7 stages |
| Signatur Omveien | NO | 227 km | 16 stages |
| SignaTUR RYGER | NO | 204 km | 16 stages |
| Signatur Stølsheimen | NO | 115 km | 9 stages |
| Signatur Tafjordfjella | NO | 74 km | 7 stages |
| Signatur Trollheimen | NO | 125 km | 7 stages |
| Sigwardsweg | DE | 169 km | 9 stages |
| Siljansleden | SE | 311 km | 16 stages |
| Sintfeld-Höhenweg | DE | 145 km | 8 stages |
| Sjællandsleden 2012 | DK | 222 km | 10 stages |
| Sjuhäradsleden | SE | 145 km | 10 stages |
| Skåneleden 1: Kust till kust | SE | 290 km | 21 stages |
| Skåneleden 2: Nord till syd | SE | 226 km | 19 stages |
| Skåneleden 3: Ås till ås | SE | 162 km | 14 stages |
| Skåneleden 4: Österlen | SE | 160 km | 12 stages |
| Skåneleden 5: Öresund | SE | 237 km | 19 stages |
| Skåneleden 6: Vattenriket | SE | 125 km | 10 stages |
| Skåneleden 7: Sydkust | SE | 64 km | 5 stages |
| Skjoldungestien | DK | 37 km | 2 stages |
| Skokovská cesta | CZ | 62 km | 3 stages |
| Skye Trail | GB | 129 km | 7 stages |
| Śląsko-Morawska Droga św. Jakuba | PL | 93 km | 4 stages |
| Slavonski planinarski put | HR | 285 km | 17 stages |
| Ślężańska Droga św. Jakuba | PL | 51 km | 2 stages |
| Slí An Earagail - Sli Dhun na nGall | IE | 76 km | 4 stages |
| Slí Cholmcille - Sli Dhun na nGall | IE | 67 km | 4 stages |
| Sli Gaeltacht Muscrai | IE | 71 km | 4 stages |
| Slí Na Finne - Sli Dhun na nGall | IE | 50 km | 3 stages |
| Slí Na Rosann - Sli Dhun na nGall | IE | 65 km | 3 stages |
| Slieve Bloom Way | IE | 70 km | 4 stages |
| Slieve Felim Way | IE | 45 km | 2 stages |
| Sligo Way | IE | 80 km | 4 stages |
| Slovenska geološka pot | SI | 249 km | 22 stages |
| Slovenska planinska pot | SI | 579 km | 47 stages |
| Słubice - Gościkowo | PL | 117 km | 5 stages |
| Słupska Droga św. Jakuba | PL | 71 km | 3 stages |
| Södra Kungsleden | SE | 350 km | 20 stages |
| Solent Way | GB | 105 km | 5 stages |
| Sopeñako errege bidea | ES | 57 km | 3 stages |
| Sörmlandsleden | SE | 844 km | 81 stages |
| South Downs Way | GB | 163 km | 8 stages |
| South Leinster Way | IE | 103 km | 5 stages |
| South West Coast Path | GB | 1,035 km | 52 stages |
| Southern Upland Way | GB | 348 km | 18 stages |
| Southwark to Canterbury | GB | 132 km | 6 stages |
| Speyside Way | GB | 165 km | 8 stages |
| St Edmund Way | GB | 130 km | 6 stages |
| St Finbarr's Pilgrim Route | IE | 39 km | 2 stages |
| St James' Way | GB | 107 km | 5 stages |
| St Patrick's Way: The Pilgrim Walk | GB | 142 km | 8 stages |
| St. Olavsleden | SENO | 575 km | 29 stages |
| St. Rupert Pilgerweg | DE | 119 km | 6 stages |
| Staffordshire Way | GB | 153 km | 8 stages |
| Štefánikova magistrála | SK | 113 km | 7 stages |
| Steigerwald Panoramaweg | DE | 162 km | 9 stages |
| Steirischer Landesrundwanderweg Master | ATSI | 808 km | 57 stages |
| Steirischer Mariazellerweg 06 | AT | 261 km | 16 stages |
| Steirischer Voralpenweg 740 | AT | 107 km | 8 stages |
| Stezka Českem - Beskydy - Javorníky | CZSK | 115 km | 7 stages |
| Stezka Českem - Česká Kanada | CZ | 88 km | 5 stages |
| Stezka Českem - Český les | CZ | 134 km | 7 stages |
| Stezka Českem - Dolnomoravský úval | CZSK | 120 km | 6 stages |
| Stezka Českem - jižní Šumava | CZ | 76 km | 5 stages |
| Stezka Českem - Novohradské hory | CZ | 133 km | 6 stages |
| Stezka Českem - Podyjí | CZAT | 105 km | 6 stages |
| Stezka Českem - Šumava | CZ | 99 km | 5 stages |
| Stezka Českem - západní Šumava | CZ | 112 km | 6 stages |
| Stezka Českem – Bílé Karpaty | CZSK | 96 km | 6 stages |
| Stezka Českou Kanadou | CZ | 111 km | 6 stages |
| Stockholm Archipelago Trail | SE | 163 km | 13 stages |
| Stormarnweg | DE | 112 km | 6 stages |
| Störtebekerweg | DE | 189 km | 8 stages |
| Stour Valley Path | GB | 103 km | 6 stages |
| Stour Valley Way | GB | 105 km | 6 stages |
| Strada Antica A Gravona | FR | 32 km | 2 stages |
| Strada Antica Da a Cinarca à u Cruzinu | FR | 36 km | 3 stages |
| Strada Antica Da a Muntagna à a Piaghja | FR | 35 km | 2 stages |