I recently celebrated my birthday by doing a solo float trip on a 10 or so mile stretch of the Blackfoot River in Montana.  I will tell you up front - this is no extreme adventure...  It was simply a personal victory, having never done any solo river canoeing.  And not owning a whitewater canoe, I didn't want to take on the more technical part of the river, although I did paddle through one class II rapid gracefully.
 
The water was swift and the wind was blowing pretty hard.  It was a typical summer thuder-stormy day in Montana.  I parked my bike at the take-out, and headed up to the start of my run, filled with mixed feelings.  Although I have done my share of river canoeing, it is always with my husband or someone else.  And being a rather light person, I am always the one in front.  I quickly found out how different it is to handle the boat on my own.  Blood sugar was not an issue - it seemed to be the perfect combination of hard paddling and stress...  Luckily, after about 10 minutes on the water, I was finally convinced that I was doing just fine - I even had to turn my basal rate down a bit.  The rest of the trip was fantastic!
 
After dragging the canoe up a steep bank at the bottom of my run, I hopped on my bike and rode about 8 miles back to my car.  It was a pretty good uphill grunt most of the way.  I also learned that my quads don't like to pedal uphill after I've been kneeling for several hours!  But it was a great time, despite the minor cramps and complaints from various muscles (I am mostly a hiker/peak bagger, so these muscles don't get used nearly enough)!
 
Hope everyone else is having a great summer in the outdoors!
 
Cat