glossary-category: ITRA Performance Index

ITRA distance categories are based on typical and popular distances of trail races. They range from 2 km (Vertical) to distances over 190 km or 100 miles (Endurance). Vertical 10 km Half marathon (21 km) Marathon (42 km) 50 km 50 miles (80 km) 100 km 100 miles (166 km) Endurance (>100 miles) ITRA is READ MORE »

The ITRA Performance Index (PI) is a tool for evaluating trail runners. It’s based on a runner’s speed during a race and gives a good idea of the runner’s performance. ITRA is the International Trail Running Association. ITRA’s PI allows you to rank athletes based on their individual scores. For example, here you can find READ MORE »