Okay, here it is-->I've broken it down into 3 sections that you can separately calculate then add together for a final time...: 7x4min with 3min being at 3:35 per k and 1min being at 3:50 per k PACE. After you have calculated that, add in 2x3min with 2min being at 3:30 per k and 1min at 3:50 per k PACE. After that, 2x2min with 1min being at 3:25 per k and 1min at 3:50 per k PACE. There it is then. For whoever can calculate it correctly, you are awesome!!!