A Launceston cyclist has died after colliding with a ute.

The 21-year-old man from Trevallyn died in the crash on the West Tamar Highway at Riverside around 8:20am (AEDT).

Colin Burns from Cycling Tasmania says the man was out for a ride with a friend on a stretch of road used by up to 300 cyclists a day.

"It's just an absolute tragedy," he said.

"I was actually supposed to be out riding myself this morning and I didn't, this is just a really popular cycling area."

Tasmanian police are investigating the cause of the collision.

They have not released any information about the driver of the ute.

The death takes Tasmania's holiday road toll to two.