Understanding how these perturbations, operating at different time scales, alter the width, depth, and planform of a channel is critical for identifying potential problem areas in a river system. A geomorphological approach to river management reduces flood damages while improving aquatic habitat.
A 5K run is a great distance for a beginner. You can prepare for a 5K run in just two months. Consider using this seven-week 5K run training schedule as your guide. This 5K run training schedule was created by Olympian Jeff Galloway.
If you're a beginner, with average conditions (intersections, in shape but a biking beginner, no big hills and ending at the same elevation you started) 45 minutes. If it's flat, no intersections, good bike, etc, and you're motivated to try to go fast, I'll say 40. That's a time trial, I rode some of those when I was a kid, and I think I started at about 40 minutes, and definitely not better than 35. I pretty quickly improved to 30 minutes, and after that improvement was hard.