Upcoming Ultras: 16 Races to Watch in the Next 30 Days

Get ready to lace up and hit the trails as we take you on a global tour of the most exciting ultramarathons happening around the world in the coming weeks. From the rugged terrain of Scandinavia to the scenic landscapes of the British countryside, the sun-kissed trails of Australia, the mountainous regions of Japan, the rugged wilderness of Canada, and the picturesque paths of Poland, we've got you covered with the latest updates and essential information on 16 hand-picked ultra events.

Editor's Pick: Sörmlands 100 - 100mi

Sep 11 · Gripholms slott, Mariefred, SWE · 100mi

The Sörmlands 100 - 100mi ultramarathon, taking place on September 11, 2026, at Gripholms slott in Mariefred, Sweden, promises to be a challenging fixed-format event on 171 kilometers of trail terrain. With a participant cap of 100, this event will provide a unique and intimate experience for those who qualify to compete. The 2026 edition is expected to be a highly sought-after event, with only 51 finishers from the most recent edition to strive for.

By Distance

100 Miles

• Sörmlands 100 - 100mi — Sep 11 · Gripholms slott, Mariefred, SWE
  100mi in SWE
• Ultra Fest — Sep 19 · Easton, WA, USA
  100mi in USA
• Squatchayanda Trail Festival (Wild Goose) — Sep 19 · Hewitt, NJ, USA
  100mi in USA
• Lonely Mountain Ultra 100mi — Sep 26 · Orange, NSW, AUS
  5,300 m of vertical gain

100K

• Ultra trail Harricana de Charlevoix 125 Km — Sep 11 · La Malbaie, QC, CAN
  175 finishers last edition — well-established field
• Sörmlands 100 - 100km — Sep 12 · Öster Malma, Nyköping, SWE
  100k in SWE
• Bieg 7 dolin - 100 km Ultramaraton — Sep 12 · Piwniczna-Zdroj, POL
  Tight 19h cutoff for 100 km
• Paraty by UTMB - UTSB 110 — Sep 18 · Paraty, Rj, BRA
  325 finishers last edition — well-established field
• Hardmoors 60 — Sep 19 · Guisborough, GBR
  8,200 m of vertical gain
• Grindstone 100 Km — Sep 19 · Swoope, VA, USA
  Tight 18h cutoff for 100 km
• Tango 100 km Ultramarathon — Sep 20 · Kyotango, Kyoto Pref., JPN
  Big-stage field — 1,108 finishers last edition
• Ultra Trail Whistler by UTMB - 100K — Sep 26 · Whistler, BC, CAN
  5,400 m of vertical gain
• Muraoka 100 km Ultra Marathon — Sep 27 · Muraoka, Hyogo Pref., JPN
  Big-stage field — 1,500 entry cap
• Cuyamaca 100 km Endurance Run — Oct 3 · Julian, CA, USA
  Tight 19h cutoff for 100 km

50K – 50 Miles

• Sörmlands 100 - 50km — Sep 12 · Nyköping, SWE
  190 finishers last edition — well-established field
• Wildstrubel by UTMB - 50K — Sep 12 · Adelboden, CHE
  Big-stage field — 1,304 finishers last edition

This Week in Numbers

• Biggest field: Wildstrubel by UTMB - 50K — 1,304 finishers
• Most climb: Hardmoors 60 — 8,200 m gain
• Tightest cutoff: Tango 100 km Ultramarathon — 14h for 100 km
• Furthest flung: Lonely Mountain Ultra 100mi — AUS
• Longest day: Sörmlands 100 - 100mi — 171 km · 100mi

That's a hand-picked slice — see all 561 upcoming events on our race calendar.