1. "Ndirĩ na ngendo" (pronounced "Ndee-ree na ngendo") - This literally translates to "I am with travel" and is a common way to say you are traveling.
2. "Nĩ ndũgĩrĩrĩ" (pronounced "Nee ndoo-gee-ree-ree") - This means "I am on a journey" and is more specific to a longer trip or journey.
3. "Nĩ ndũgĩrĩrĩ" (pronounced "Nee ndoo-gee-ree-ree") - This is a more formal way to say "I am traveling."
4. "Nĩ ndũgĩrĩrĩ mũthemba" (pronounced "Nee ndoo-gee-ree-ree moo-them-ba") - This means "I am traveling in a group" and is used when traveling with others.
The choice of phrase depends on the specific situation and what you want to emphasize.