50K ultra runs in Hertfordshire
Find 50k ultra runs near me in Hertfordshire for 2025/2026 - search by date or place, display on a map or use the advanced search to find your perfect race.
Search by month
Search by place
MapEvents near me
Click an event for full event details, location, route, sustainability, what's included and how to enter.
- Sat 24 May
- £34-£36
- Sat 24 May
- £34-£36
Farmmageddon | Ultra Marathon
Can you survive Farmmageddon? Run an ultra over a fantastic 5.3K loop through the lovely grounds of Hyde Hall Farm as part of the Farmmageddon endurance weekend.
- Enter online
- Undulating
- Traffic free
- Age 18 & over
- 32 miles trail running
- Sun 1 Jun
- £35.50-£37.50
- Sun 1 Jun
- £35.50-£37.50
Circuit Du Sore Legs | Part Cinq | Ultra Marathon
In its fifth year! Come take on the challenge of the track at Wodson Park. Do you have it in you to complete your distance on a 400-metre athletics track?
- Chip timing
- Enter online
- Flat
- PB
- Traffic free
- Age 18 & over
- 50 km track and field
- Sat 1 Nov
- £35.50-£37.50
- Sat 1 Nov
- £35.50-£37.50
Catherine Wheel Canter | Ultra Marathon
Welcome to the Fireworks Festival of Running! Come and tackle the track to see whether you can complete more than a marathon over multiple laps of the 400m circuit.
- Chip timing
- Enter online
- Flat
- Traffic free
- Age 18 & over
- 50 km track and field
- Sat 1 Nov
- £35.50-£37.50
- Sat 1 Nov
- £35.50-£37.50
Guy Fawkes Gallop | Ultra Marathon
Welcome to the Fireworks Festival of Running! Come and tackle the track to see whether you can complete more than a marathon over multiple laps of the 400m circuit.
- Chip timing
- Enter online
- Flat
- Traffic free
- Age 18 & over
- 50 km track and field