Start at the ABQ BioPark on Central and the river. From Central heading west past Rio Grande Blvd, turn R into the main BioPark parking lot and head to overflow parking at the far SW side of the parking lots, close to the bike trail. 

Ride S on the Bosque trail to Rio Bravo

R on Rio Bravo

L (S) on Isleta for about 6 miles to Malpais

(There's a convenience store on the corner of Isleta and Malpais)

R (W) on Malpais to Coors

(Turn around here for a 25 mile ride)

L (S) on Coors for 8.28 miles through the Isleta reservation

L (E) on Griegos Rd on the northern outskirts of Los Lunas

R (S) on Los Lentes to Main Street 

Take a quick break then turn around and head back.

There are restaurants along Main St. Traffic can be heavy and this is not a bike friendly area but you can walk your bike at last resort.