
London, United Kingdom · Tuesday 11 August 2026
Held in London’s beloved Richmond Park, this summer half marathon is a fantastic mix of wildlife, scenic greenery, and undulating trails. The multi-distance event attracts a diverse field of runners, from casual joggers to seasoned racers, all enjoying the peaceful yet challenging course.
Adjusted Time
2:10:12
Time difference: +25.2 minutes compared to a flat, road, temperate course.
On our difficulty model, Richmond Park Half Marathon - August plays about 24 minutes slower than an average road half marathon for a 1:30 runner. It ranks #39 hardest of 450 half marathons we analyse, and #11 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 Richmond Park Half Marathon - August | Difference |
|---|---|---|
| 1:30:00 | 1:52:28 | +22:28 |
| 1:45:00 | 2:10:12 | +25:12 |
| 2:00:00 | 2:27:58 | +27:58 |
| 2:15:00 | 2:45:46 | +30:46 |
| 2:30:00 | 3:03:36 | +33:36 |
| 2:45:00 | 3:21:30 | +36:30 |
| 3:00:00 | 3:39:26 | +39:26 |
Use the calculator above for your exact goal time. Want a prediction from your own training? Try the marathon time predictor.
Richmond Park Half Marathon - August is a half marathon held in London, United Kingdom. It is scheduled for Tuesday 11 August 2026. The course is run on mixed surface with 209m of total climbing, with its high point near 50m above sea level. For registration and full race details, visit the official Richmond Park Half Marathon - August website.
With 209m of total climbing, this is a gently undulating course. The elevation changes are manageable for most runners and shouldn't greatly affect your pacing.
Based on historical weather data for August, the expected race day conditions are as follows. Moderate temperatures between 14°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 low chance of rain (0%), so dry conditions are likely.
Richmond Park Half Marathon - August features a mixed-surface course, combining sections of road with unpaved terrain such as gravel paths, parkland, or boardwalks. Mixed courses add variety but also introduce some unpredictability in footing. Expect slightly slower times than on a pure road course, and road-trail hybrid shoes may be the best footwear option.
Looking for an easier marathon or a tougher challenge? You can also compare Richmond Park Half Marathon - August against other half marathons to find the right race for your goals.
If Richmond Park Half Marathon - August fits your goal, these courses play out about the same on our difficulty model.
Eaglesham, United Kingdom
Dundee, United Kingdom
Ilkley, United Kingdom
London, United Kingdom
Richmond, United Kingdom
Musselburgh, United Kingdom