Sub-1:15 Half Marathon — Training Paces and Fitness Profile

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Race Distance

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Sub-1:15 half marathon is elite-tier endurance running. At most road races this places in the top handful of finishers. This requires a very high VO2max, exceptional threshold stamina, and the fitness of a serious competitive runner.

Quick answer: To break Sub-1:15:00 in the Half Marathon (RPI 62.9), your training paces are: easy 6:51/mi, threshold 5:41/mi, interval 5:13/mi. Equivalent fitness: Marathon 2:36:55, 10K 33:58.

Training paces for Sub-1:15:00 Half Marathon

RPI 62.9 · Goal: 1:14:59 · All paces in min/mile

Easy (80%+ of weekly running)

6:51/mi4:15/km

Marathon Pace

6:00/mi3:43/km

Threshold (comfortably hard)

5:41/mi3:31/km

Interval (VO2max sessions)

5:13/mi3:14/km

Repetition (short fast reps)

4:49/mi2:59/km

Calculated from StrideIQ's RPI equations. Easy pace means "this pace or slower."

Equivalent race fitness

These are the predicted equivalent times at other distances for a runner with RPI 62.9 — assuming comparable training for each distance.

Marathon

2:36:55

5:59/mi

10K

33:58

5:28/mi

16:22

5:16/mi

Training approach for Sub-1:15:00 Half Marathon

Sub-1:15 half marathon requires sustaining near-threshold pace for 74–75 minutes. This demands both a high aerobic ceiling and the specific metabolic stamina to operate near it for an extended period. High weekly volume (65–85+ miles), two quality sessions per week (one threshold, one interval), and long runs of 15–18 miles are typical for runners at this level.

Your goal

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Common questions

What training paces does a sub-1:15 half marathon require?

For sub-1:15:00 (1:14:59): Easy 6:51/mi, Marathon 6:00/mi, Threshold 5:41/mi, Interval 5:13/mi. RPI 62.9. Threshold work at 5:41/mi for 25–40 minutes is the primary race-specific quality session.

What marathon does sub-1:15 half fitness predict?

Sub-1:15 half marathon fitness (RPI 62.9) projects to approximately 2:36:55 marathon potential — elite-level marathon territory. Converting this to a marathon requires full marathon-specific build: 20-mile long runs, sustained marathon-pace work, and time.

What 5K does sub-1:15 half marathon fitness correspond to?

Sub-1:15 half fitness (RPI 62.9) is equivalent to approximately 16:22 5K fitness. This cross-distance benchmark shows the full scope of elite-level endurance fitness.

Other goal pace guides

Sub-20 Minute 5K →Sub-25 Minute 5K →Sub-40 Minute 10K →Sub-50 Minute 10K →Sub-2 Hour Half Marathon →Sub-4 Hour Marathon →Sub-17 Minute 5K →Sub-18 Minute 5K →Sub-19 Minute 5K →Sub-21 Minute 5K →Sub-22 Minute 5K →Sub-23 Minute 5K →Sub-24 Minute 5K →Sub-27 Minute 5K →Sub-30 Minute 5K →Sub-35 Minute 10K →Sub-36 Minute 10K →Sub-37 Minute 10K →Sub-38 Minute 10K →Sub-39 Minute 10K →Sub-42 Minute 10K →Sub-45 Minute 10K →Sub-48 Minute 10K →Sub-55 Minute 10K →Sub-60 Minute 10K →Sub-1:20 Half Marathon →Sub-1:25 Half Marathon →Sub-1:30 Half Marathon →Sub-1:35 Half Marathon →Sub-1:40 Half Marathon →Sub-1:45 Half Marathon →Sub-1:50 Half Marathon →Sub-2:30 Marathon →Sub-2:45 Marathon →Sub-3 Hour Marathon →Sub-3:05 Marathon →Sub-3:10 Marathon →Sub-3:15 Marathon →Sub-3:20 Marathon →Sub-3:30 Marathon →Sub-3:45 Marathon →Sub-4:30 Marathon →Sub-5 Hour Marathon →Training Pace Calculator →

Paces calculated using StrideIQ's RPI equations. All values derived from the same formula used by the StrideIQ training pace calculator. Goal times use the target-minus-one-second convention (e.g., sub-20 = 19:59 input).