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We propose a method to speed up the r -adding walk on multiplicative subgroups of the prime field. The r -adding walk is an iterating function used with the Pollard rho algorithm and is known to require less iterations than Pollard's original iterating function in reaching a collision. Our main idea is to follow through the r -adding walk with only partial information about the nodes reached. The trail traveled by the proposed method is a normal r -adding walk, but with significantly reduced execution time for each iteration. While a single iteration of most r -adding walks on F p require a multiplication of two integers of logp size, the proposed method requires an operation of complexity only linear in logp , using a pre-computed table of size O ((logp ) r + 1·loglogp ). In practice, our rudimentary implementation of the proposed method increased the speed of Pollard rho with r -adding walks by a factor of more than 10 for 1024-bit random primes p .