From everything I read about Bruce Lee he used full body routines when he lifted and never a split. He was also a big fan of running. Lew Alcindor (Kareem Abdul-Jabbar) use to train with Bruce in Martial Arts and he said they use to go for 5 mile runs.
Bruce Lee weight trained for strength, not size, so no splits, nor isolation moves. Did isometrics like crazy, flexing, muscle control, and isokinetics. Tried to work everything in, that he thought could give him speed, endurance, and strength. As for running, he did sprinting, not long distance running. He didn't want to burn muscle tissue. So he would travel a long distance, but was not distance running per se. He'd start off at a slow pace for warm up, break into a sprint, for a short distance of course, slow to a walk, jog backwards, high stepping at an easy pace, lunge walk, cross over walk, plie lunge walk, and back to full tilt sprinting throughout the "run" course. With Kareem's stride, him running with Bruce Lee, would have been something to see!