Ruth - you are the superstar of the nutrition world! Thank you for the advice, and also to Mike and BarnsleyRunner - all very useful information (printed and filed).
Steve - there are no intervals at this stage (endurance) of my training plan. I followed a plan in the past which had a lot of emphasis on intervals in the early stages, and it left me unable to cope with required tempo sessions which appeared later in the plan. The P&D plan is broken into mesocyles (6 weeks endurance; 5 weeks endurance + lactate threshold; 4 weeks race preparation - includes VO2max/interval sessions; 3 weeks taper). It's the first time I've tried this approach, and I'm happy with progress so far. Next week is the first step-back (recovery) week in the program.
Regarding the garmin settings, my main training/racing display is
- Time taken
- Distance covered
- Current lap pace
- Current (immediate) pace
It takes about 0.25 miles for the current lap pace to settle to a useful figure. The immediate pace jumps around too much to be useful on it's own, but it helps me to adjust my pace back to target. I have the overall average pace on a separate display, but don't often refer to it in training. I have had better success by not worrying about what is in the past (i.e. the overall average pace) and concentrating on the present lap. For training, I have autolap turned on. However, it makes sense to turn this off in races and manually hit lap at the mile markers. It doesn't matter if you forget to hit the lap button for any given mile, because you can press it twice at a later lap and thereby correct the average pace.
My new garmin has an extra display screen and (I think) more options. I'll have to try some more experimentation soon.
Edited: 07/01/2013 at 15:28