sprinting
Webster's Dictionary (GCIDE)
Sprint \Sprint\ (spr[i^]nt), v. i. [imp. & p. p. Sprinted; p. pr. & vb. n. Sprinting.] [Cf. Sprunt.] To run very rapidly; to run at full speed. [1913 Webster]
A runner [in a quarter-mile race] should be able to sprint the whole way. --Encyc. Brit. [1913 Webster]