Ultra Running Hub Northampton, United Kingdom · Sunday, September 13, 2026
Fixed Distance 50K
TrailFest Holdenby House 50 km
Race completed
50 km Distance
not publishedn/a Climbing
2.5 est Grit · Entry level
Calculated from 50 km alone — the organiser has not published an elevation profile. Read 2.5 as a floor, not a verdict.
What the course asks
Time limit 11 hours
13:12 min/km average. Comfortable. Climbing is unpublished, so this pace is a ceiling on the effort, not a measure of it. More forgiving than 64% of 50K races. Measured against 1046 races of the same distance. Cut-off calculator →
Typical conditions, September
Daytime high 19°C
Night low 9°C
Rainfall Mostly dry
Daylight 12 h 54 m of light
Regional 2001-2020 average for September — NASA POWER, grid elevation 74 m. Not a forecast.
Course notes
- gear With trail terrain, choose a shoe with moderate cushioning for optimal performance.
Gear for this race
Chosen for 50 km of trail.
- Trail Running Shoes 50 km of trail — cushioning that is still there in the last quarter.
- Race Nutrition 50 km of self-supported fuelling between aid stations.
- Hydration Vests Flask capacity for 50 km, without the bounce.
- GPS Watches Battery life first — a 50 km day outlasts most full-GPS modes.
Similar races
Other 50K trail ultras, closest in distance first.