Great Bristol Half Marathon
Bristol, United Kingdom · Sunday 18 October 2026
The Great Bristol Half Marathon is more than just a race. As you traverse through vibrant city streets, you'll find the area has a unique energy. Join the crowd of runners. Explore the city while getting the body moving. Bristol embodies community unlike few areas. What are you waiting for? Explore it at this excursion!
Difficulty Calculator
h
:m
:s
Adjusted Time
1:44:54
Time difference: -0.1 minutes compared to a flat, road, temperate course.
Course Details
Elevation Gain71m
Elevation High21m
Elevation Low9m
Weather Forecast
High22°C
Low13°C
Chance of Rain82%
How hard is Great Bristol Half Marathon?
Moderateharder than 35% of half marathons
Flattest / easiestHardest
On our difficulty model, Great Bristol Half Marathon plays about 2 minutes slower than an average road half marathon for a 1:30 runner. It ranks #292 hardest of 450 half marathons we analyse, and #61 of 89 in United Kingdom. Use the calculator above to see the exact adjusted time for your own goal pace.
What will you run at Great Bristol Half Marathon?
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 Great Bristol Half Marathon | Difference |
|---|---|---|
| 1:30:00 | 1:29:31 | −00:29 |
| 1:45:00 | 1:44:54 | −00:06 |
| 2:00:00 | 2:00:18 | +00:18 |
| 2:15:00 | 2:15:44 | +00:44 |
| 2:30:00 | 2:31:12 | +01:12 |
| 2:45:00 | 2:46:41 | +01:41 |
| 3:00:00 | 3:02:11 | +02:11 |
Use the calculator above for your exact goal time. Want a prediction from your own training? Try the marathon time predictor.
Great Bristol Half Marathon 2026 Course Analysis
Great Bristol Half Marathon is a half marathon held in Bristol, United Kingdom. It is scheduled for Sunday 18 October 2026. The course is run on road surface with 71m of total climbing, with its high point near 21m above sea level. For registration and full race details, visit the official Great Bristol Half Marathon website.
Elevation Profile
This is a very flat course, with only 71m of total climbing and little change in altitude throughout. Flat profiles let you hold an even pace from start to finish, which makes this a fast, PB-friendly race.
Expected Race Day Weather
Based on historical weather data for October, the expected race day conditions are as follows. Moderate temperatures between 13°C and 22°C are expected. While comfortable for most runners, those targeting fast times should pay attention to hydration, as these temperatures can impact performance on race day. There is a high chance of rain (82%). Runners should prepare for wet conditions, including appropriate footwear and clothing choices.
Surface Type: Road
Great Bristol 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 Great Bristol Half Marathon against other half marathons to find the right race for your goals.
Half marathons of similar difficulty
If Great Bristol Half Marathon fits your goal, these courses play out about the same on our difficulty model.
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