Loch Ness Marathon
Inverness, United Kingdom · Sunday 27 September 2026
The marathon begins in an exposed moorland area, where runners must be prepared for unpredictable Highland weather and potentially cold conditions before the race begins. The initial section of the course trends predominantly downhill for the first six to seven miles, though there are minor climbs, including a particularly steep section after about 4.5 miles that challenges early pacing and leg control.
Difficulty Calculator
h
:m
:s
Adjusted Time
3:58:07
Time difference: -1.9 minutes compared to a flat, road, temperate course.
Course Details
Elevation Gain208m
Elevation High308m
Elevation Low7m
Weather Forecast
High15°C
Low9°C
Chance of Rain100%
How hard is Loch Ness Marathon?
Moderateharder than 31% of marathons
Flattest / easiestHardest
On our difficulty model, Loch Ness Marathon plays about 2 minutes slower than an average road marathon for a 3:30 runner. It ranks #798 hardest of 1150 marathons we analyse, and #45 of 57 in United Kingdom. Use the calculator above to see the exact adjusted time for your own goal pace.
What will you run at Loch Ness Marathon?
Estimated finish times on this course versus the same effort on an average road marathon, based on its elevation, surface, and expected race-day temperature.
| Average-course time | On Loch Ness Marathon | Difference |
|---|---|---|
| 3:00:00 | 2:56:25 | −03:35 |
| 3:30:00 | 3:27:11 | −02:49 |
| 4:00:00 | 3:58:07 | −01:53 |
| 4:30:00 | 4:29:12 | −00:48 |
| 5:00:00 | 5:00:24 | +00:24 |
| 5:30:00 | 5:31:44 | +01:44 |
| 6:00:00 | 6:03:11 | +03:11 |
Use the calculator above for your exact goal time. Want a prediction from your own training? Try the marathon time predictor.
Loch Ness Marathon 2026 Course Analysis
Loch Ness Marathon is a full marathon held in Inverness, United Kingdom. It is scheduled for Sunday 27 September 2026. The course is run on road surface with 208m of total climbing and around 509m of descent (a net drop of roughly 301m), with its high point near 308m above sea level. For registration and full race details, visit the official Loch Ness Marathon website.
Elevation Profile
This is a net-downhill course: it descends roughly 301m more than it climbs (208m of ascent against about 509m of descent), dropping from a high point near 308m toward 7m above sea level. Point-to-point downhill courses like this are among the fastest available for a personal best or a Boston qualifier - just be aware that sustained descending fatigues the quads late in the race, so ease off early and do some downhill running in training.
Expected Race Day Weather
Based on historical weather data for September, the expected race day conditions are as follows. Near-ideal running temperatures are expected, ranging from 9°C to 15°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
Loch Ness 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 Loch Ness Marathon against other marathons to find the right race for your goals.
Marathons of similar difficulty
If Loch Ness Marathon fits your goal, these courses play out about the same on our difficulty model.
Other Marathons in United Kingdom
Farnham Pilgrim Marathon
Farnham, United Kingdom
Road762m gainSept 2026
Langdale Marathon and Half
Great Langdale, United Kingdom
Road822m gainSept 2026
Baxters Loch Ness Marathon & Festival of Running
Inverness, United Kingdom
Road167m gainSept 2026
GoFundMe Richmond RUN-FEST
London, United Kingdom
Road135m gainOct 2026
Kielder Marathon
Kielder, United Kingdom
Trail472m gainOct 2026