I have not ridden down to Trillium, but I have skied it several times. It is a nice area, even in the summer
IMO you made a good decision not to ride up to Timberline. It is a 5 or 6 mile climb , and time would be better spent checking out the lodge and taking a lift up the mountain. I've skied and climbed there a lot and it is a great place.
View from near the parking lot . This was the picture used on my business cards.
A little different view. It is a little more than a short walk up from the lodge. The little black dots in the middle of the picture are other climbers. They are about at the point when the real climbing begins.