
Bath, United Kingdom · Sunday 17 May 2026
Bath Marathon, also known as the Two Tunnels Bath Marathon, is a unique event held in Bath, UK. The race features a full marathon, half marathon, 10K, 5K, and Colourburst events, making it a great sporting day out for the whole family. The course includes over 4 km of underground running through newly restored railway tunnels, offering a truly unique experience. Runners also pass through beautiful city parks, historic landmarks like Bath Abbey, and the stunning Avon Valley countryside.\n\nWith i
Adjusted Time
3:58:03
Time difference: -2.0 minutes compared to a flat, road, temperate course.
Bath Marathon is a full marathon held in Bath, United Kingdom, scheduled for Sunday 17 May 2026. The course is run on road surface with 252m of total elevation gain, reaching a maximum altitude of 31m above sea level. For registration and full race details, visit the official Bath Marathon website.
With 252m of elevation gain, this is a moderately undulating course. The route ranges from 14m to 31m above sea level (17m total range). While not completely flat, the elevation changes are manageable for most runners and shouldn't significantly impact pacing strategy.
Based on historical weather data for May, the expected race day conditions are as follows. Near-ideal running temperatures are expected, ranging from 8°C to 14°C. This temperature range is widely considered optimal for marathon performance, allowing efficient heat dissipation without cold-related issues. There is a moderate chance of rain (46%). Runners may want to prepare for wet conditions but shouldn't expect persistent rainfall.
Bath 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 Bath 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 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 Bath Marathon against other marathons to find the right race for your goals.
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