Crack propagation data associated with the paper " Stress-aided thermal activation of crack propagation in multidentate hydrogen bonding adhesives" currently under review. Briefly, cured DGEBA-Tris polymers adhered to mica are peeled away by the sudden movement of a glass spacer, and the crack between the materials propagates, slowing down until it reaches equillibrium. By knowing the length of the crack and material properties one can calculate the strain energy release rate *G* at all times through the equation *G = (9 µ d^3 h^2)/(24 l^4)*, where *µ* is the shear modulus of the material (25 GPa), *h* is the height of the spacer used to initate the crack, *d* is the thickness of the mica sheet, and *l* is the crack length. By analyzing the movement of the crack *G* can be correlated with the instantaneous crack velocity. Data was collected using a home-built microscope to record the position of the crack over time. Also included are the presented control curves for DGEBA and mica controls. Each CSV file is named with the temperature at which the measurement was performed and the identifier. It contains a header listing the height of the spacer used and the thickness of the mica sheet for each sample. The first two columns are the time and time stamp of the associated image. Then, the crack length is presented for each image, calculated from the known position of the spacer. The next four columns contain intermediate steps to obtain this crack length: first, the "Mean Crack Edge" records the position of the vertical mean of the crack in the image, calculated from the left edge of the frame. Then the "Crack edge mean" reports the error assocated with this mean crack edge, which largely comes from slight tilts to the crack front. The column "Motor Position" contains the position of the motor that moves the camera, allowing for absolute positioning beyond the frame edge. Larger values inidcate further to the right in the frame. Finally, the "Absolute crack position" column contains the sum of the crack edge and the motor moment positioning. The 8th column reports the calculated crack velocity, found as the derivative of crack position vs time after smoothing using a non-uniform savgol filter. The 9th column reports an alternative method of obtaining crack velocity through the differentiation of an interpolated function, which was not used in analysis. Finally, we have the calculated strain energy release rate and the associated error, which mostly comes from errors associated with determining the mica thickness.