Exhibit 5.1
                                        BRYAN CAVE LLP
                                   120 BROADWAY, SUITE 500
                                SANTA MONICA, CALIFORNIA 90401
                                        (310) 576-2100
                                 FACSIMILE (310) 576-2200...



                                      December 16, 1998



Day Runner, Inc.
15295 Alton Parkway
Irvine, California 92618


                  Re:    Day Runner, Inc. - Registration Statement on Form S-8

Gentlemen:

                  We have acted as securities counsel for Day Runner,  Inc. (the
"Company") in connection  with the  preparation of a  registration  statement on
Form S-8 (the  "Registration  Statement")  under the  Securities Act of 1933, as
amended,   to  be  filed  with  the  Securities  and  Exchange  Commission  (the
"Commission")  on December 16, 1998, in connection  with the  registration of an
aggregate  of 550,000  shares of Common  Stock,  par value $0.001 per share (the
"Shares"), comprising (i) 375,000 shares of Common Stock of the Company issuable
upon the exercise of options granted or to be granted  pursuant to the Company's
1995 Stock  Option  Plan,  (ii)  150,000  shares of Common  Stock of the Company
issuable under the Company's  Non-Employee  Director Stock Option Plan and (iii)
25,000  shares of Common  Stock of the  Company  issuable  upon the  exercise of
warrants granted to the five non-employee  directors of the Company on April 20,
1998 (such 1995 Stock Option Plan,  Non-Employee  Director Stock Option Plan and
warrants are referred to herein as the "Plans").

                  In  connection  with  the  preparation  of  the   Registration
Statement and the proposed  issuance and sale of the Shares in  accordance  with
the Plans and the Form S-8  prospectuses  to be delivered to participants in the
Plans,  we have made certain  legal and factual  examinations  and inquiries and
examined, among other things, such documents, records, instruments,  agreements,
certificates and matters as we have considered appropriate and necessary for the
rendering of this  opinion.  We have assumed for the purpose of this opinion the
authenticity  of all documents  submitted to us as originals and the  conformity
with  the  originals  of  all  documents  submitted  to us as  copies,  and  the
genuineness of the signatures  thereon. As to various questions of fact material
to  this  opinion,   we  have,  when  relevant  facts  were  not   independently
established,  relied,  to the extent deemed proper by us, upon  certificates and
statements of officers and representatives of the Company.

                  Based on the  foregoing  and in  reliance  thereon,  it is our
opinion that the Shares have been duly  authorized  and, after the  Registration
Statement becomes effective and after any  post-effective  amendment required by
law is duly  completed,  filed and becomes  effective,  and when the  applicable
provisions  of "Blue  Sky" and  other  state  securities  laws  shall  have been
complied  with,  and when the Shares are issued and sold in accordance  with the
Plans and the Form S-8  prospectuses to be delivered to the  participants in the
Plans, the Shares will be validly issued, fully paid and nonassessable.

                  We hereby  consent to the  inclusion of our opinion as Exhibit
5.1 to the  Registration  Statement and further consent to the reference to this
firm in the  Registration  Statement.  In giving this consent,  we do not hereby
admit that we are in the  category of persons  whose  consent is required  under
Section 7 of the  Securities  Act of 1933 or the rules  and  regulations  of the
Commission thereunder.

                  This opinion is rendered solely for your benefit in connection
with the subject transaction and is not to be otherwise used, circulated, quoted
or referred to without our prior written  consent.  We are opining  herein as to
the effect on the subject  transaction only of United States federal law and the
internal laws of the State of Delaware,  and we assume no  responsibility  as to
the  applicability  thereto,  or the  effect  thereon,  of the laws of any other
jurisdiction.

                                                    Very truly yours,



                                                    BRYAN CAVE LLP