However, according to the Road Bike website, the optimal speed for a bicycle trainer is 15 mph. It is possible to complete the trip on the first day if the cyclist is fit enough, but it may take some time for the ride to build up enough stamina. Start cautiously as a rookie rider and progressively improve your pace. The most important thing is that you are comfortable with the speed you are riding at. If you feel like you are going too fast or too slow, then adjust it until you are happy. There are different types of trainers available on the market. Some can go up to 20 miles an hour while others only reach 15 miles per hour. As long as you are not going over 20 miles per hour all the time, this should not be a problem. You should also consider how far you want to travel when choosing the right type of trainer. Some models are limited to distances of less than five miles while others can go up to 20 miles. Again, this should not be a problem as long as you do not go over 20 miles per hour all the time. The last factor to take into account is your budget. There are low-cost options out there which use roller skates as their moving part so make sure you check those out. However, if you want to save money then you might want to look at using old bicycles as sources of energy.