Both boys, right at 2 years, 3 months. Strange.
It got to a point that if they napped at all, even 20 min. in car during day, they would not go to sleep at regular 730pm bedtime...they'd be bouncing in and out of bed until 9-10pm. So we gave up naps, and moved bedtime up. We head upstairs at 630pm for baths, then straight to bed, usually around 7 or 730. They both go to bed at that time (they are 4 and 2.5) and sleep soundly until 730 the next morning.
It was tough to lose naptime, (I needed that time to myself) but I love having from 730-midnight to myself and my husband!
Good luck