Hundreds of dinos will be roaring down Douglas Promenade today.
Hundreds runners will set off on the Jurassic Sprint T-Rex fancy dress fun run at 2pm.
Dinos will run 2.5km in aid of learning disability charity Manx Mencap.
Organisers are hoping to set an unofficial world record for the most runners dressed in the costumes.
Framework of new Sea Services Agreement ready, says minister
Attorney General says he's stepping down
Road closures in two towns for running event this week
Six weekend ferry crossings could face disruption
President of Tynwald announces retirement
Police close Mountain road
Fuel firm says "fingers crossed" for calmer energy costs
Ring doorbells will need data protection registration - but shouldn't cost you money