
Karlovy Vary, Czech Republic · Saturday 17 May 2025
Set in the picturesque city of Karlovy Vary, the Mattoni Half Marathon is a stunning race that showcases the charm of one of Europe's most famous spa towns. Runners follow a scenic course along the Ohře River, passing elegant colonnades, mineral springs, and grand historical buildings. The route is relatively flat, making it an excellent choice for both first-timers and experienced runners chasing a personal best. With lively crowds and an electric atmosphere, this race is a highlight of the Run
Adjusted Time
1:41:07
Time difference: -3.9 minutes compared to a flat, road, temperate course.
Mattoni Half Marathon is a half marathon held in Karlovy Vary, Czech Republic, scheduled for Saturday 17 May 2025. The course is run on road surface with 93m of total elevation gain, reaching a maximum altitude of 147m above sea level. For registration and full race details, visit the official Mattoni Half Marathon website.
This is a very flat course with only 93m of total elevation gain across the full distance. The course ranges from 130m to 147m above sea level — a 17m elevation range that makes it one of the flatter races available. Runners targeting a personal best will appreciate the minimal climbing.
Based on historical weather data for May, the expected race day conditions are as follows. Near-ideal running temperatures are expected, ranging from 5°C to 16°C. This temperature range is widely considered optimal for marathon performance, allowing efficient heat dissipation without cold-related issues. There is a high chance of rain (60%). Runners should prepare for wet conditions, including appropriate footwear and clothing choices.
Mattoni Half Marathon is run on road surfaces, which provide the fastest and most predictable conditions for marathon running. Road courses allow for consistent pacing and are typically the best choice for runners targeting a personal best time.
Our difficulty rating for Mattoni Half Marathon is calculated using a model that combines elevation gain, temperature impact, and surface type. Use the difficulty calculator above to enter your target finish time and see exactly how many minutes this course would add or subtract compared to a perfectly flat, cool, road-based half marathon. Faster runners and slower runners are affected differently by the same course conditions, so the difficulty is personalised to your pace.
Looking for an easier marathon or a tougher challenge? You can also compare Mattoni Half Marathon against other half marathons to find the right race for your goals.