Full Marathon

Sub-3 Hour
Marathon.

Everything you need to run a 2:59:59 marathon — exact paces, mile-by-mile splits, 5K checkpoints, and key race targets.

Target Pace

06:52

per mile · 04:16 per km

Goal Time

2:59:59

Distance

26.2 mi

Halfway

1:29:60

Breaking 3 hours means holding 06:52/mi (04:16/km) for all 26.2 miles — one of recreational running's most coveted milestones. It demands serious weekly mileage, smart race execution, and months of disciplined preparation.

Required Pace

Hit These Numbers

Per Mile

06:52

min / mile

Per Kilometer

04:16

min / km

Key Checkpoints

Race Day Targets

Checkpoint	Target Time
5K	21:20
10K	42:39
15K	1:03:59
20K	1:25:19
Halfway (13.11 mi)	1:29:60
25K	1:46:38
30K	2:07:58
35K	2:29:18
40K	2:50:37
Finish (26.22 mi)	2:59:59

Mile-by-Mile

Full Split Chart

Mile	Split	Elapsed
Mile 1	06:52	06:52
Mile 2	06:52	13:44
Mile 3	06:52	20:36
Mile 4	06:52	27:28
Mile 5	06:52	34:19
Mile 6	06:52	41:11
Mile 7	06:52	48:03
Mile 8	06:52	54:55
Mile 9	06:52	1:01:47
Mile 10	06:52	1:08:39
Mile 11	06:52	1:15:31
Mile 12	06:52	1:22:23
Mile 13	06:52	1:29:14
Mile 14	06:52	1:36:06
Mile 15	06:52	1:42:58
Mile 16	06:52	1:49:50
Mile 17	06:52	1:56:42
Mile 18	06:52	2:03:34
Mile 19	06:52	2:10:26
Mile 20	06:52	2:17:18
Mile 21	06:52	2:24:09
Mile 22	06:52	2:31:01
Mile 23	06:52	2:37:53
Mile 24	06:52	2:44:45
Mile 25	06:52	2:51:37
Mile 26	06:52	2:58:29
Mile 27 (finish)	01:30	2:59:59

5K Split Checkpoints

Every 5 Kilometres

Distance	Elapsed
5K	21:20
10K	42:39
15K	1:03:59
20K	1:25:19
25K	1:46:38
30K	2:07:58
35K	2:29:18
40K	2:50:37
45K (finish)	2:59:59

Equivalent Fitness

What Else You Can Run

Equivalent 5K

~20:00

predicted

Equivalent 10K

~41:30

predicted

Equivalent Half

~1:28

predicted

Related Resources

Pace Calculator

Enter any goal time and get instant splits for any distance.

Sub-90 Half Marathon Pace Chart

Full mile and km splits for breaking 1:29:59.

What Pace for a 1:30 Half Marathon?

Pacing strategy, training tips, and a full race plan.

How to Fuel for a Half Marathon

Pre-race meals, gel timing, and hydration strategy.

Training Tips

How to Break 3 Hours

01

Build to 50+ Miles Per Week

Sub-3 marathon fitness demands a real aerobic base. Aim for 45–55 miles per week at peak, with the vast majority run at easy conversational pace. Volume is the foundation everything else rests on.

02

Run Weekly Tempo Work

One lactate threshold session per week — either a steady 40-minute tempo at roughly 6:40–6:45/mi or cruise intervals (3–4 x 2 miles at threshold pace) — sharpens your ability to hold 6:52/mi for 26.2 miles.

03

Do Long Runs with Race-Pace Segments

Your long run is your most important training session. Build to 20–22 miles and include the final 6–8 miles at or near goal pace (6:52/mi). This teaches your legs to run fast on tired muscles — the defining skill of marathon racing.

04

Execute a Smart Race Strategy

Go out at 6:55–7:00/mi for the first 10 miles. It will feel absurdly easy. That restraint is the strategy. Use the energy you bank early to run a strong final 10K. Half splits near 1:30:30 and 1:29:30 are ideal.

05

Nail Your Fuelling

At nearly 3 hours of effort you will deplete glycogen without supplementation. Practice your gel and fluid strategy in long runs. Target a gel every 30–40 minutes from mile 6 onward and drink at every aid station.

06

Taper Properly

Cut mileage by 40% in the third-to-last week and 50% in race week. Keep some intensity — a few short race-pace miles — to stay sharp. Trust the taper. Arrive to the start feeling almost too fresh.

Race Day Pace

Calculate Your Own Race Pace

Enter any goal time and get instant splits for 5K, 10K, half marathon, and marathon.

Open Pace Calculator