1-2-sports, the online sports club where

• … you can record and visualize workouts
• … you can select from over 120 sports
• … you can challenge other members
• … you can workout with your friends (even when they are far away)
• … find new sports mates
• … check your energy (calorie) consumption
• … draw routes (running, biking, walking and more) with gps-precision
• … find race and bike tracks in your neighborhood
• … publish photos, tracks and your results
• … visualize your training in a clear layout
• … have a look at your friends' training diaries
• … find sports clubs (associations), stores and events

In short, there's no need to train alone. You can have fun and motivate yourself and others.