ALTAR 100k
Avondale, Wicklow
25 Apr 2026
⚠ Start times change frequently. Always check with race organiser or their website for this year's confirmed start time before travelling.
Course map
Map based on 2025 route
⚠ This map is for indicative purposes only — routes can change, or be reversed, year to year. Check with the race organiser for this year's confirmed map.
Elevation profile
About this race
The ALTAR 100k is an ultra-endurance event held at Beyond the Trees Avondale Forest Park in County Wicklow. Runners complete 31 loops of a 3.2km forest trail circuit, starting and finishing at the central aid station near the car park. The course winds through the mature woodland of Avondale Forest Park on forest trails and paths, with gentle undulation throughout. A 100k relay option is also available for teams of up to five. A central aid station stocked with water, snacks and ALTAR Speed Dust is accessible every loop, and drop bags are permitted. On-site facilities include a café, pizzeria, playground and toilets. Two full ambulance crews are on site for the duration of the event.