For D3 results we're going to defer to the Pomona-Pitzer site as it has just about every link you'll need for D3 Cross Country results. This is really a great site for D3 history & results.
To top this all off the USTFCCCA site has done us one better by providing ALL of the NCAA XC results. The links below will take you to all of the Cross Country results for the NCAA.
D1 NCAA CROSS COUNTRY RESULTS