how to rate

[Keeyun <Keeyun@aol.com>]

I will be doing a 25. My first.  I have many questions.  But right now I would
like to know about rateing(sp).  How fast should I be going.  I know I have to
allow time for the p&r stops.  The time frame is  3:45 -  4:30.  I am not sure
how many stops there will be at this ride.  Is it best to try and keep a
constant rate?  I know if I trot at 7 miles an hour that this will give me 28
miles in 4 hours.  Will this allow enough time for the P&R stops.  Also is
this a feasible rate?
Thanks Kelly