I am reading the Friel’s Cyclist’s Training Bible. He recommends a 30 minute time trial type ride to determine your LTHR. I am located in Glendora and would like to find somewhere within about 40 minute drive where I can do a 30 minute time trial type ride, without stoplights, etc. I would like to avoid the SGRT and the SART because I am concerned that it could be hazardous passing slower traffic on the trail. I would also like to avoid doing this on a steep climb, because it might skew the results. I know that this type of testing could be done on a trainer, but I find that I am not able to ride as hard on the trainer as I am on the road. Thanks for your help.