Hubby and I were on our 25 mile ride tonight and at about the 17th mile I got my second flat. Now you think that since I wasnt prepared for the first flat that I would be for the this one. NOPE. Oh yeah, I have a spare tube but left it at home. Ive got to learn how to change a tire and either bring a pump with me or try one of those co2 cartridges. So anyways I had a nice walk for a couple miles until my son came to get me with the mini van. Oh yeah and another thing I had to walk bare foot cuz I had my cleats on. Oh well I'll be fixed back up by tomorrow. Hoping to try and do 50 miles tomorrow. I'll be sure to bring a spare tube and pump. Is it normal to have two flats in two weeks? I bought this used bike two weeks ago. Ive never had a flat with my mountain bike.