(大) + 老远 + Verb
The adverb 老远 (lǎoyuǎn) means "very far" or "a long way off" and emphasizes great distance in a colloquial way. The prefix 老 intensifies the meaning of 远 (far), and it often appears with 大 for further emphasis, as in 大老远过来的 (came from very far away).
他大老远跑过来就为了看你一眼。
tā dà lǎo yuǎn pǎo guòlái jiù wèile kàn nǐ yī yǎn.
He came all the way here just to see you.
我老远就看见她在路口等我了。
wǒ lǎo yuǎn jiù kànjiàn tā zài lùkǒu děng wǒ le.
I saw her waiting for me at the intersection from far away.
别大老远地跑来了,打个电话就行。
bié dà lǎo yuǎn de pǎo lái le, dǎ gè diànhuà jiù xíng.
Don't come all the way here — just give me a call.