Kielder Marathon, known as Britain's Most Beautiful Marathon, is held around Kielder Water in Northumberland. The event takes place over a weekend and features a variety of races, including a full marathon, half marathon, 10K, and junior fun runs. The marathon route follows an almost entirely off-road course around the lake, offering breathtaking scenery and an electric atmosphere.\n\nWith its well-organized setup and stunning natural beauty, this marathon is a must-do for those seeking a memora
Adjusted Time
4:42:41
Time difference: +42.7 minutes compared to a flat, road, temperate course.
| Surface | Trail |
| Elevation Gain | 472m |
| Elevation High | 240m |
| Elevation Low | 189m |
| Predicted High | 12°C |
| Predicted Low | 8°C |
| Chance of Rain | 55% |