I am looking for some advice...I got my bike last June. Last summer I set out to ride a 20 miles route as my goal. It took me a couple months, but by August I had accomplished the goal. I stopped riding in the fall and got back on the bike at the very end of April this year. I ramped up pretty quickly. I started out at 8-10 miles easily. My goal this summer was a 30 mile trek. A few weeks ago I pulled off a 22 miler so I thought I would be well on my way. But since then I am struggling. The most I can seem to pull off is 19 miles and by mile 15 I am spent and can barely finish. I have been trying to focus on my cadence. I pedal at about 75-80. When I am on a training bike at the gym I am slightly higher and can easily pull off 15 miles in 40 minutes. On the road I am lucky if I hit 11 mph. I know weight is the issue there, the trainer doesn't take that into consideration. I feel like I am never going to get much above 20 miles. I usually ride twice during the week, either on road or trainer, for 40-60 minutes and do a longer ride on Saturday (90-120 minutes). I also do 1-2 other days of cardio- walking, hiking, elliptical, Zumba.
So my question is, has anyone else encountered this? Is it normal? How did you push through? Also, when you go out for your rides do you stop along the way? I just ride 2 hours straight. Should I stop and rest?
I ride a Jamis Coda Sport if that helps. I know it isn't a road bike per se. Someday I will take the plunge on upgrading, but not if I can't get my miles up and my weight down.
Any help is appreciated since I am so discouraged.