The best replacement for triathlon is road bike.

The best alternatives to triathlon are rated as following:
★★★★★  road bike
★★★  marathon
★★  ironman
★  time trial bike
★  triathlon
★  duathlon
★  cycling
★  marathon harder
  road bikes
  ultramarathon
  road bicycle
  olympic triathlon
  biathlon
  half marathon
  time trial bikes
  road shoe
  half iron man
  iron man
  triathlete magazine
  training

Your alternative for triathlon is not listed? Suggest!
Speaking about triathlon, one probably shouldn't forget about disabled son.

Other search terms related to triathlon and their ratings are:
★★★★★ disabled son
You have in mind a companion for triathlon and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of triathlon in all years. Click on graph for more.
triathlon
road bike
marathon