Police were called to the park on Salters Lane just before seven this morning after the body was spotted by a passer by.
The area has been cordoned off and officers are treating the death as unexplained at the moment.
They say investigations are still at an early stage.
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The Gung-Ho! Seriously Fun 5k takes place today (Saturday 2nd July) at Newcastle Racecourse, Gosforth in aid of charity.
Veterans, cadets, dignitaries and serving Northumberland Fusiliers have paid tribute to those killed at the Battle of the Somme
Clear spells. Showers. Brisk winds. Sunday looks like the better day