奔跑

Meaning：Run
Sentence：他奔跑了一两条街，然后放慢步子走起来。He ran a street or two, and then fell into a walk.

More: 

奔： 

Pinyin: bèn,bēn 
Meaning: Run
Radical: 大
Stokes: 8
Traditional: 奔
Common words/Phrase:
奔腾 [bēn téng] 【to roll on in waves】
奔放 [bēn fàng] 【bold and unrestrained】
奔波 [bēn bō] 【rush ab0ut】
奔走 [bēn zǒu] 【run】
奔流 [bēn liú] 【pour】

跑： 

Pinyin: páo, pǎo 
Meaning: To run; to escape
Radical: 足
Stokes: 12
Traditional: 跑
Common words/Phrase:
跑车 [pǎo chē] 【sports car】
跑道 [pǎo dào] 【track】
跑龙套 [pǎo lóng tào] 【to play a small role】
跑酷 [pǎo kù] 【parkour】
跑马 [pǎo mǎ] 【horse race】