Eureka Canyon is a nice climb, I do that one often. You can get to Loma from the top of the canyon, a road called Ormsby Cutoff I think goes up to summit. As for Mt. Madonna, the old road is better to climb up(than the new road) because there are very few cars(and it's like 10x more beautiful). I'll climb up the new road on the backside to make a figure 8 though. Yay for Loma!