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| Jurassic Coast 100ultratrailevents.com/ultra-trail-events/jurassic-extinction-jurassic-coast-100 (opens in a new tab) |  United Kingdom | PooleUnited Kingdom | ultratrailevents.com/ultra-trail-events/jurassic-extinction-jurassic-coast-100 (opens in a new tab) |
| Lauf zwischen den Meerenlauf-zwischen-den-meeren.de (opens in a new tab) |  Germany | HusumGermany | lauf-zwischen-den-meeren.de (opens in a new tab) |
| Glen Lyon Ultra Marathonrunyarocket.com/race/glen-lyon (opens in a new tab) | United Kingdom | Glen LyonUnited Kingdom | runyarocket.com/race/glen-lyon (opens in a new tab) |
| Sawmill Ultratripledarerunningcompany.com/events/sawmill-relay?v=11aedd0e4327 (opens in a new tab) |  United States | Las VegasUnited States | tripledarerunningcompany.com/events/sawmill-relay?v=11aedd0e4327 (opens in a new tab) |
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| Bieler Lauftage100km.ch (opens in a new tab) |  Switzerland | Biel/BienneSwitzerland | 100km.ch (opens in a new tab) |
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| Portumna Forest Marathonforestmarathon.com (opens in a new tab) |  Ireland | PortumnaIreland | forestmarathon.com (opens in a new tab) |
| Bay Area 100scenaperformance.com/events/bay-area-100/ (opens in a new tab) | United States | BerkeleyUnited States | scenaperformance.com/events/bay-area-100/ (opens in a new tab) |
| Marys Peak Trail Runoregontrailruns.com/marys-peak-trail-run (opens in a new tab) | United States | BlodgettUnited States | oregontrailruns.com/marys-peak-trail-run (opens in a new tab) |
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| Comrades Marathoncomradesmarathon.co.za (opens in a new tab) |  South Africa | PietermaritzburgSouth Africa | comradesmarathon.co.za (opens in a new tab) |
| Eifelmarathon Waxweilereifelmarathon.com (opens in a new tab) | Germany | WaxweilerGermany | eifelmarathon.com (opens in a new tab) |
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| Zugspitz Ultra Trail by UTMBzugspitz-ultratrail.com (opens in a new tab) | Germany | Garmisch-PartenkirchenGermany | zugspitz-ultratrail.com (opens in a new tab) |
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| Nordmarka Skogsmaratonnordmarkaskogsmaraton.no (opens in a new tab) |  Norway | OsloNorway | nordmarkaskogsmaraton.no (opens in a new tab) |
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| Marathon du Mont-Blancmarathonmontblanc.fr (opens in a new tab) |  France | Chamonix-Mont-BlancFrance | marathonmontblanc.fr (opens in a new tab) |
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| SachsenTrailsachsentrail.de (opens in a new tab) | Germany | BreitenbrunnGermany | sachsentrail.de (opens in a new tab) |
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| Losheimer Trailfesttrailfest.de (opens in a new tab) | Germany | Losheim am SeeGermany | trailfest.de (opens in a new tab) |
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| Texoma Challengetexasoutlawrunning.com/texoma (opens in a new tab) | United States | DenisonUnited States | texasoutlawrunning.com/texoma (opens in a new tab) |
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| Mac Mac Ultramacmacultra.com (opens in a new tab) | South Africa | SabieSouth Africa | macmacultra.com (opens in a new tab) |
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| Gornergrat Zermatt Marathonzermattmarathon.ch (opens in a new tab) | Switzerland | ZermattSwitzerland | zermattmarathon.ch (opens in a new tab) |
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| U. Trail Lamer Winkelutlw.de (opens in a new tab) | Germany | LamGermany | utlw.de (opens in a new tab) |
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| Gran Trail Courmayeurgtcourmayeur.com/fr (opens in a new tab) |  Italy | CourmayeurItaly | gtcourmayeur.com/fr (opens in a new tab) |
| Paznaun Ischgl Ultra Trailpaznaun-ischgl.com/en/piut-homepage (opens in a new tab) |  Austria | SeeAustria | paznaun-ischgl.com/en/piut-homepage (opens in a new tab) |
| Lakeland Trails Ultralakelandtrails.org/ultra (opens in a new tab) | United Kingdom | AmblesideUnited Kingdom | lakelandtrails.org/ultra (opens in a new tab) |
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| Trail du Pays Welchetraildupayswelche.org (opens in a new tab) | France | OrbeyFrance | traildupayswelche.org (opens in a new tab) |
| Mt Hood Trail Runsgobeyondracing.com/races/mt-hood-50/ (opens in a new tab) | United States | Government CampUnited States | gobeyondracing.com/races/mt-hood-50/ (opens in a new tab) |
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| Vermont 100 Endurance Racevermont100.com (opens in a new tab) | United States | KillingtonUnited States | vermont100.com (opens in a new tab) |