Bwlah Penbarras, United Kingdom · Tuesday 11 May 2027
Immerse yourself in the legends of King Arthur at the Excalibur Marathon (featuring a half marathon option), held in southwest England. The course explores the rolling hills and wooded areas of Somerset, offering glimpses of ancient history and breathtaking views. The landscape is quintessentially English and promises a memory. Runners seeking a unique and challenging race experience will find a touch of magic in this Excalibur journey.
Adjusted Time
2:19:07
Time difference: +34.1 minutes compared to a flat, road, temperate course.
On our difficulty model, Excalibur Half Marathon plays about 28 minutes slower than an average road half marathon for a 1:30 runner. It ranks #31 hardest of 450 half marathons we analyse, and #8 of 89 in United Kingdom. Use the calculator above to see the exact adjusted time for your own goal pace.
Estimated finish times on this course versus the same effort on an average road half marathon, based on its elevation, surface, and expected race-day temperature.
| Average-course time | On Excalibur Half Marathon | Difference |
|---|---|---|
| 1:30:00 | 1:56:28 | +26:28 |
| 1:45:00 | 2:19:07 | +34:07 |
| 2:00:00 | 2:42:24 | +42:24 |
| 2:15:00 | 3:06:16 | +51:16 |
| 2:30:00 | 3:30:41 | +1:00:41 |
| 2:45:00 | 3:55:39 | +1:10:39 |
| 3:00:00 | 4:21:07 | +1:21:07 |
Use the calculator above for your exact goal time. Want a prediction from your own training? Try the marathon time predictor.
Excalibur Half Marathon is a half marathon held in Bwlah Penbarras, United Kingdom. It is scheduled for Tuesday 11 May 2027. The course is run on road surface with 969m of total climbing, with its high point near 539m above sea level. For registration and full race details, visit the official Excalibur Half Marathon website.
This is a very challenging course with 969m of total climbing - well above the average road marathon - topping out around 539m above sea level. Hill training is essential, and you should expect a slower finish time than on a flat course.
Based on historical weather data for May, the expected race day conditions are as follows. Near-ideal running temperatures are expected, ranging from 9°C to 20°C. This temperature range is widely considered optimal for marathon performance, allowing efficient heat dissipation without cold-related issues. There is a low chance of rain (0%), so dry conditions are likely.
Excalibur Half Marathon is run on road surfaces, which provide the fastest and most predictable conditions for racing. Road courses allow for consistent pacing and are typically the best choice for a personal best.
Looking for an easier marathon or a tougher challenge? You can also compare Excalibur Half Marathon against other half marathons to find the right race for your goals.
If Excalibur Half Marathon fits your goal, these courses play out about the same on our difficulty model.
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