Event Ticketing and Registration

2025 Ultra Series

Organised by XNRG-HD
8th March 2025

Enter all three 2025 Ultras - Amersham, Chiltern and Tring

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2025 XNRG Humanity Direct 50km Race Series

We are for a limited time offering the chance to enter all 3 of XNRG's 50km trail races for one great price.

The events are:
  • The Amersham 50km on the 8th March
  • Chiltern Challenge 19th July
  • Tring 50km on the 20th September


As with the individual event entries, all funds are donated to Humanity Direct and used to pay for vital, life-changing operations for children in Uganda




  • Essential Information
  • Date: 8th March, 2025
  • Start Time: 00:00
  • Event Format
  • Distance: 50km
  • Facilities
  • Food Available
  • Refreshments
  • Race Features
  • Chip Timing
  • Awards
  • Solo Event
  • Race Route
  • Checkpoints
  • Circular Route
  • Services
  • Changing Facilities
  • Baggage Store



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