Eden Half Marathon
St Austell, United Kingdom · Sunday 18 October 2026
The Eden Half Marathon is set in the spectacular Eden Project in Cornwall, where runners are treated to an exciting course that winds through both the outdoor landscape and the iconic biomes of the project. The route starts with a scenic journey around the famous Eden Gardens, offering a rare chance to run through this unique environment. With rolling hills and coastal views along the way, this race gives runners a taste of the best of Cornwall’s natural beauty.
Difficulty Calculator
h
:m
:s
Adjusted Time
1:53:05
Time difference: +8.1 minutes compared to a flat, road, temperate course.
Course Details
Elevation Gain312m
Elevation High142m
Elevation Low-2m
Weather Forecast
High16°C
Low13°C
Chance of Rain100%
How hard is Eden Half Marathon?
Difficultharder than 77% of half marathons
Flattest / easiestHardest
On our difficulty model, Eden Half Marathon plays about 8 minutes slower than an average road half marathon for a 1:30 runner. It ranks #104 hardest of 450 half marathons we analyse, and #29 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 Eden 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 Eden Half Marathon | Difference |
|---|---|---|
| 1:30:00 | 1:35:57 | +05:57 |
| 1:45:00 | 1:53:05 | +08:05 |
| 2:00:00 | 2:10:22 | +10:22 |
| 2:15:00 | 2:27:50 | +12:50 |
| 2:30:00 | 2:45:26 | +15:26 |
| 2:45:00 | 3:03:11 | +18:11 |
| 3:00:00 | 3:21:05 | +21:05 |
Use the calculator above for your exact goal time. Want a prediction from your own training? Try the marathon time predictor.
Eden Half Marathon 2026 Course Analysis
Eden Half Marathon is a half marathon held in St Austell, United Kingdom. It is scheduled for Sunday 18 October 2026. The course is run on road surface with 312m of total climbing, with its high point near 142m above sea level. For registration and full race details, visit the official Eden Half Marathon website.
Elevation Profile
This is a hilly course with 312m of total climbing, rising to around 142m above sea level. It pays to train on hills and to pace the climbs conservatively.
Expected Race Day Weather
Based on historical weather data for October, the expected race day conditions are as follows. Near-ideal running temperatures are expected, ranging from 13°C to 16°C. This temperature range is widely considered optimal for marathon performance, allowing efficient heat dissipation without cold-related issues. There is a high chance of rain (100%). Runners should prepare for wet conditions, including appropriate footwear and clothing choices.
Surface Type: Road
Eden 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 Eden Half Marathon against other half marathons to find the right race for your goals.
Half marathons of similar difficulty
If Eden Half Marathon fits your goal, these courses play out about the same on our difficulty model.
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