After waiting at the finish line for an hour, Mr Hambly spoke to the race organisers who told him he needed to speak to the police.
BBC: Thousands take part in 2012 Bristol Half Marathon
2.
Remembering events before Mr Read's death, friend Robin Hambly said their group had done a few 10k races, but were looking for a challenge so they entered the 2011 half.
BBC: Thousands take part in 2012 Bristol Half Marathon
3.
"At the police station we were told Nick had dropped to the floor after telling a marshal he felt unwell - it looked like he had died immediately despite attempts to revive him, " Mr Hambly said.
BBC: Thousands take part in 2012 Bristol Half Marathon