Odometer and speed

[north woods gal]

Can't help on the odometer thing. Sorry.

The problem when dealing with hills and average speed are the specific hills involved. A short, but very steep hill, cuts into my average speed more than a longer, more gradual hill, partially because I need a bit more time to recover on the steeper hill after cresting it. I have several 20 mile loops that I do - all have hills and level stretches - but my average speed can vary 2 mph or more, depending on the specific hills involved, not to mention other factors like wind (especially this), pavement quality and so on.

As far as average speed, yours versus the group, really tough to predict until you actually ride with the group. Then, too, if you are the competitive type, you may also find that you'll push harder when riding with the group. The good news is that you are at least in the ball park, so well worth giving it a try. Go for it. Best of luck.