Trail Run Chur is a mountain trail race on Brambrüesch, Chur's local mountain in eastern Switzerland. Held in June, it offers runners four route choices within the Dreibündenstein region. These range from the KURZA course, 6.7 km with 410 metres of elevation gain, to the LANGA course, 27.5 km with 2,100 metres up and 1,050 metres down.
The UFFA route is 12.5 km with a steep 1,300 metres of ascent and 250 metres of descent. The OBA is a 15 km loop featuring 800 metres of climbing and descent. The variety of distances accommodates newcomers, while the significant climbs on UFFA and LANGA provide a challenge for experienced trail runners. The event is organized by Trail Run Chur and based at Kasernenstrasse in Chur.