01 - 04 April 2027 · Umag, Istria, Croatia
🟢 Registration open
Open now. We message you before it sells out, and if spots come back.
Opens Telegram → tap Start → done. First race free.
📍 Map & official registration link⏰ Deadline reminders (where the race has them)🏃 Local run clubs (coming race by race)
Free plan: the alert for 1 race. VIP $3/month: unlimited races + this guide.
Will Istria 100 by UTMB sell out?
Popular races can sell out months before race day. Follow it and we message you if it sells out, and again if spots come back.
When and where is Istria 100 by UTMB 2027?
01 - 04 April 2027, Umag, Istria, Croatia. Always confirm details on the official race page.
How do I get the Istria 100 by UTMB alert?
Open the Race Alert bot on Telegram, tap Start and follow this race (one tap from the button on this page). No app to install. No Telegram? Use the email form on this page.
Is it free?
Yes for 1 race. VIP (about $3 / 30 days, paid in Telegram Stars) follows unlimited races. New users get 14 days of VIP free.
Do you sell entries?
No. We only alert you; you always register on the official race page.
Where?
Umag, Istria, Croatia · Google Maps · Official page
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