The Blanenská etapa is a 42.2 km marathon held in Blansko, Czech Republic. It is Stage 1 of MUM, the Moravian Ultramarathon series, which consists of seven marathons over seven consecutive days. This stage is scheduled for June, a month when Blansko generally experiences mild to warm running conditions, with average temperatures between 13-23°C and a possibility of afternoon thunderstorms.
The race provides a GPX track for participants to review the route beforehand. The participant numbers suggest a focused, specialist field rather than a large, general audience: the overall MUM figures indicate 51 runners, with 4 in the half-marathon category and small numbers for individual stages. Consequently, the Blancko stage feels more integrated into a demanding multi-day event than a distinct city marathon.