We went to the Brown County Breakdown today with our 9 year old on her Kona to try the easy Pine Loop. We had a BLAST. Best ride ever for all 3 of us.
She had some trouble at the beginning of the first loop, but after downshifting some things were perfect from them on. After a snack break and buying her a t-shirt (this is a huge event, over 500 riders doing anywhere from 20-100 miles, plus a ton of unregistered riders like us) we did another loop where she only stopped like 5 times during the 2.5 miles and we averaged over 6mph for that loop.
Total of 5 miles of riding and we couldn't be prouder of her.
Here's a cell phone vid from me riding one-handed.