Oggi sto andando in bicicletta verso la città.

Sto andando is the present progressive in Italian: stare + gerundio.

• sto = I am
• andando = going

So sto andando emphasizes that the action is in progress right now or around this moment.

A native speaker might also say Oggi vado in bicicletta verso la città, especially if they just mean their plan for today. The version with sto andando sounds more like:

• I’m on my way now
• I’m currently going
• the movement is happening as we speak

So both are possible, but sto andando is more immediate and ongoing.

Not exactly.

In English, the progressive is extremely common: I’m going, I’m studying, I’m working, etc.

In Italian, the simple present often does a lot of that work:

• vado can mean I go, I’m going, or I do go, depending on context.

The progressive (sto andando) is used, but usually when the speaker wants to stress that the action is actively happening right now.

So Italian uses the progressive less often than English.

Oggi means today, and placing it at the beginning is very natural because it sets the time frame right away.

Italian word order is fairly flexible, so you could also say:

• Sto andando in bicicletta verso la città oggi.
• In bicicletta sto andando verso la città oggi.

But these may sound less neutral or put emphasis in different places.

The most natural neutral order here is:

• Oggi sto andando in bicicletta verso la città.

Because in bicicletta is the normal Italian expression for by bicycle / on a bicycle.

It works like other transport expressions:

• in macchina = by car
• in treno = by train
• in aereo = by plane
• in bicicletta = by bicycle

Con la bicicletta is understandable, but it sounds more like with the bicycle rather than the standard way to express means of transport.

A very common shorter version is:

• in bici

This is just how the idiom works.

In many expressions of transport, Italian uses in + noun without an article:

• in macchina
• in treno
• in autobus
• in bicicletta

So in bicicletta is a fixed, natural expression. You usually do not say in la bicicletta or nella bicicletta here.

Verso means toward or in the direction of.

So verso la città suggests movement in that direction, but it does not necessarily say you will arrive there.

Compare:

• verso la città = toward the city
• in città = into the city / in the city
• alla città = generally not the natural choice here

If the idea is simply direction, verso is perfect.
If the idea is destination, Italians might more naturally say something like:

• Sto andando in città in bicicletta.

In Italian, nouns often need an article where English does not.

So la città is normal here.
After verso, using the article is very common:

• verso la città
• verso il centro
• verso la stazione

Saying just verso città would usually sound unnatural in ordinary speech.

Also, città is feminine singular, so the article is la.

Yes. Italian allows some flexibility in word order.

For example:

• Oggi sto andando in bicicletta verso la città.
• Oggi sto andando verso la città in bicicletta.
• In bicicletta sto andando verso la città oggi.

All of these are possible, but they do not feel equally neutral.

The original sentence sounds very natural.
Putting in bicicletta later can slightly emphasize the means of transport.

Yes, very much so.

Andare in bicicletta is the standard way to say to go by bike / to ride a bike.

You will also hear:

• andare in bici = same meaning, more casual
• girare in bicicletta = to go around by bike
• muoversi in bicicletta = to get around by bike

So this is an important expression to learn as a chunk.

It can sound a little specific, depending on context.

Oggi gives a broad time frame: today.
Sto andando gives a very immediate sense: I’m going right now.

So together, the sentence works best in a context like:

• today, unlike usual, I’m currently going by bike toward the city
• today I happen to be heading there by bike right now

If you just want to say your plan for today, Oggi vado in bicicletta verso la città may sound more natural.

So the original sentence is correct, but it has a strong right now feeling.

Because città is stressed on the last syllable, and in Italian final stress is usually marked with a written accent.

So:

• città
• università
• società

The accent shows both the pronunciation and the correct spelling.

In città, the stress is on the final -tà.

Yes, but the meaning changes slightly.

• verso la città = toward the city, in that direction
• in città = into the city / to the city area

So if you want to emphasize the direction of travel, use verso la città.
If you want to emphasize the destination, in città may be more natural.

For example:

• Oggi sto andando in bicicletta in città.
• Oggi vado in bici in città.

Both are very natural depending on what exactly you mean.