Arc of Attrition - The Ultrarunner.com

UTMB World Series Calendar 2026

December 16, 2025December 16, 2025 abichal27Arc of Attrition, Desert RATS by UTMB, Kosciuszko by UTMB, Mallorca by UTMB, Mozart 100, Quito Trail by UTMB, Tarawera Ultra-Trail, Trail du Ventoux by UTMB, Ultra-Trail® Snowdonia, UTMB® Mont-Blanc, Val d’Aran, Western States, Xtrail Kenting by UTMB0 comment

The UTMB World Series Calendar 2026 features over 50 events and more are being added. Check the UTMB for their latest events list. Name Date (2026) CCC Distances (≥50K only) Website Arc of Attrition by UTMB 22–25 Jan GBR 50K / 100M Site Chianti by UTMB 19–22 Mar ITA 50K / 100K / 100M (check) Site Tenerife Bluetrail by UTMB 19–21 Mar ESP 100K (and ≥50K options – check) Site Istria by UTMB 09–12 Apr HRV 50K / 100K / 100M (check) Site Ultra‑Trail Mogan 10–12 Apr CHN 50K /…

Arc of Attrition by UTMB®

January 29, 2025 abichal27Arc, Arc of Attrition, coastal trail, Cornwall’s Southwest Coast Path, Eleanor Davis, Kristian Jones, Lewis Ryan, Noor Van Der Veen, Sara Alonso, Tom Evans, UTMB2 Comments

The 2025 UTMB World Series season began in spectacular fashion with a new addition to the circuit: Arc of Attrition by UTMB. From January 24 to 26, 1180 runners completed three race formats – the Arc 100 (100M), Arc 50 (100K), and Arc 25 (50K) – set amidst the wild, unspoilt beauty of Cornwall’s Southwest Coast Path in the UK. Participants were treated to the raw splendour of this iconic coastal trail, navigating technical and breathtaking routes. The event saw strong elite participation and course records shattered, particularly in the Arc 50…