Hi. My first post but I live in Perth…..
You could get in the car and go up to Laggan, Wolftrax mountain bike centre…..about an hour and half from Auchterarder but well worth the journey! There is a good bike shop and cafe there and you can pay to get an uplift with a landrover if you want. Love it and there are graded runs including a wicked black.
Pitmedden forest which is about a 10 min drive from Perth on the St. Andrews road is great. Park your car in the little car park at the bottom of the landrover track. Ride up and then explore all the lovely singletrack up there.
You can find some lovely jumps and shortish rides up at Deuchny Wood up past Kinnoul hill in Perth itself. Ride up the road or take your car park at deuchny woods.
Moncreiffe hill is ok as well It's high up and lets you have a good look around the Perthshire area although fairly short and more of a walking path.
There are nice rides around Pitlochry including the LONG Glen Tilt loop which has been mentioned in an earlier post. If you want something a little shorter pop into the bike shop in Pitlochry(escape route) at the bottom end of town and speak to Kevin in there and he will provide you with some maps.
Dunkeld has lovely routes. Hermitage car park off the A9.
Pop into Perth City Cycles and Richards bike shop in Perth and speak to the guys in there as well. Good guys in both shops.