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Here we present the identification of the optical afterglow of Fermi-GBM-detected GRB\\,260310A (AT\\,2026fgk) as a rapidly rising ($>1\\,$mag\\,d$^{-1}$), red ($g-r=0.4$\\,mag) transient using the Gravitational-wave Optical Transient Observatory, Large Array Survey Telescope, and Zwicky Transient Facility (ZTF) data streams. We present multiwavel","authors_text":"A. Aryan, A. Bochenek, A. C. Readhead, A. Krassilchtchikov, A. Kraus, A. Kumar, A. Levan, A. Martin-Carrillo, A. Nugent, A. R. Escorial, A. Ruiz Del Pozo, A. Sasli, A. Y. Q. Ho, B. P. Gompertz, B. Rusholme, C. Fremling, C. Sevilla, C. T. Christy, D. A. Perley, Dimple, D. K. Galloway, D. Kovaleva, D. O'Neill, D. Polishook, D. Schiminovich, D. Steeghs, D. Xu, E. C. Bellm, E. Kammoun, E. O. Ofek, E. Segre, F. Cuadra, G. Corcoran, G. K. Keating, G. Mo, G. P. Srinivasaragavan, G. Pugliese, G. Ramsay, G. Schroeder, G. S. H. Paek, G. Waratkar, I. Andreoni, J. C. Jaimes, J. C. Vel'azquez, J. H. Gillanders, J. L. Wise, J. Lyman, J. Purdum, J. Rastinejad, J. Sollerman, K. Ackley, K. C. Chambers, K. De, K. Noysena, K. -R. Hinds, K. Ulaczyk, K. W. Smith, L. Cotter, L. K. Nuttall, M. A. Gurwell, M. Bremer, M. E. Huber, M. F. Aller, M. J. Dyer, M. Kasliwal, M. Nicholl, M. Pursiainen, M. Shrestha, M. W. Coughlin, N. Sarin, N. Sravan, P. Jakobsson, P. Minguez, P. O'Brien, P. Rekhi, P. V. de la Parra, R. A. Perley, R. Jayaraman, R. Konno, R. Kotak, R. P. Breton, R. Rao, R. Riddle, R. R. Laher, R. Stein, R. Wainscoat, S. B. Cenko, S. Belkin, S. Ben-Ami, S. Garrappa, S. Ibrahim, S. J. Smartt, S. Rose, S. Srivastav, S. Yang, T. Ahumada, T. de Boer, T. Killestein, T. Surti, T. -W. Chen, V. D'Elia, V. S. Dhillon, X. J. Hall, Y. M. Shani, Y. Wagh, Z. 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