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BOSTON MARATHON 2023

John Irmen

Bib: 4319•M

NC

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 39%
Gender (Male)
#0 / 15176
Division (M18-39)
#0 / 5285
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:31
Rank: #5769
Start → 5K
21:31 | 6:56/mi
10K· 6.21 mi
43:04
Rank: #6053 (-284)
5K → 10K
21:33 | 6:56/mi
15K· 9.32 mi
1:05:04
Rank: #6385 (-332)
10K → 15K
22:00 | 7:05/mi
20K· 12.43 mi
1:27:47
Rank: #6730 (-345)
15K → 20K
22:43 | 7:19/mi
Half· 13.11 mi
1:32:43
Rank: #6786 (-56)
20K → Half
4:56 | 7:14/mi
25K· 15.53 mi
1:51:19
Rank: #7165 (-379)
Half → 25K
18:36 | 7:40/mi
30K· 18.64 mi
2:16:30
Rank: #7799 (-634)
25K → 30K
25:11 | 8:06/mi
20M
2:28:41
Rank: #8431 (-632)
30K → 20M
12:11 | 8:58/mi
21M
2:37:43
Rank: #8730 (-299)
20M → 21M
9:02 | 9:02/mi
35K· 21.75 mi
2:44:00
Rank: #8945 (-215)
21M → 35K
6:17 | 8:24/mi
23M
2:55:09
Rank: #9326 (-381)
35K → 23M
11:09 | 8:54/mi
24M
3:03:30
Rank: #9528 (-202)
23M → 24M
8:21 | 8:21/mi
40K· 24.85 mi
3:11:13
Rank: #9783 (-255)
24M → 40K
7:43 | 9:02/mi
25.2M
3:14:33
Rank: #9888 (-105)
40K → 25.2M
3:20 | 9:40/mi
Finish· 26.22 mi
3:24:03
Rank: #10367 (-479)
25.2M → Finish
9:30 | 9:19/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:32:43
Pace7:04 /mi
2nd Half
Distance13.11 mi
Time1:51:20
Pace8:30 /mi
📊Positive Split: 20.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:2921:316:5621:31
6:56
-
10K
6.21 mi10:45:0243:046:5621:33
6:56
0:00
15K
9.32 mi11:07:021:05:046:5922:00
7:05
+0:09
20K
12.43 mi11:29:451:27:477:0422:43
7:19
+0:14
Half
13.11 mi11:34:411:32:437:044:56
7:14
-0:05
25K
15.53 mi11:53:171:51:197:1018:36
7:40
+0:26
30K
18.64 mi12:18:282:16:307:1925:11
8:06
+0:26
20M
20.00 mi12:30:392:28:417:2612:11
8:58
+0:52
21M
21.00 mi12:39:412:37:437:319:02
9:02
+0:04
35K
21.75 mi12:45:582:44:007:326:17
8:24
-0:38
23M
23.00 mi12:57:072:55:097:3711:09
8:54
+0:30
24M
24.00 mi13:05:283:03:307:398:21
8:21
-0:33
40K
24.85 mi13:13:113:11:137:427:43
9:02
+0:41
25.2M
25.20 mi13:16:313:14:337:433:20
9:40
+0:38
Finish
26.22 mi13:26:013:24:037:479:30
9:19
-0:21

Checkpoints & Pacing

📈Pace Line

Pace Progression

Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.

Fastest Pace

6:56 /mi

Average Pace

7:47 /mi

Slowest Pace

9:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:51:19

55% of race

Time at Steady Pace

39:49

20% of race

Time at Slower Pace

52:55

26% of race

Average Pace: 7:47 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

🎨Heatmap

Pace Heatmap

Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Click or hover over segments to see details

✨Sparklines

Checkpoint Splits with Pace Trends

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:23:2921:316:5621:31
6:56
#5769
10K
6.21 mi10:45:0243:046:5621:33
6:56
#6053
15K
9.32 mi11:07:021:05:046:5922:00
7:05
#6385
20K
12.43 mi11:29:451:27:477:0422:43
7:19
#6730
Half
13.11 mi11:34:411:32:437:044:56
7:14
#6786
25K
15.53 mi11:53:171:51:197:1018:36
7:40
#7165
30K
18.64 mi12:18:282:16:307:1925:11
8:06
#7799
20M
20.00 mi12:30:392:28:417:2612:11
8:58
#8431
21M
21.00 mi12:39:412:37:437:319:02
9:02
#8730
35K
21.75 mi12:45:582:44:007:326:17
8:24
#8945
23M
23.00 mi12:57:072:55:097:3711:09
8:54
#9326
24M
24.00 mi13:05:283:03:307:398:21
8:21
#9528
40K
24.85 mi13:13:113:11:137:427:43
9:02
#9783
25.2M
25.20 mi13:16:313:14:337:433:20
9:40
#9888
Finish
26.22 mi13:26:013:24:037:479:30
9:19
#10367
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi5769529852987046(Top 26%)6279(Top 41%)6279(Top 119%)
10K6.21 mi3.10 mi6053-2845529-2315529-2316404(Top 24%)5784(Top 38%)5784(Top 109%)
15K9.32 mi3.11 mi6385-3325775-2465775-2467046(Top 26%)6279(Top 41%)6279(Top 119%)
20K12.43 mi3.11 mi6730-3456040-2656040-2657875(Top 30%)6807(Top 45%)6807(Top 129%)
Half13.11 mi0.68 mi6786-566088-486088-488100(Top 30%)6972(Top 46%)6972(Top 132%)
25K15.53 mi2.42 mi7165-3796357-2696357-26910070(Top 38%)8028(Top 53%)8028(Top 152%)
30K18.64 mi3.11 mi7799-6346744-3876744-38711667(Top 44%)8647(Top 57%)8647(Top 164%)
20M20.00 mi1.36 mi8431-6327128-3847128-38416328(Top 61%)10534(Top 69%)10534(Top 199%)
21M21.00 mi1.00 mi8730-2997306-1787306-17813569(Top 51%)9296(Top 61%)9296(Top 176%)
35K21.75 mi0.75 mi8945-2157415-1097415-10914655(Top 55%)9706(Top 64%)9706(Top 184%)
23M23.00 mi1.25 mi9326-3817611-1967611-19615541(Top 58%)10043(Top 66%)10043(Top 190%)
24M24.00 mi1.00 mi9528-2027707-967707-9613504(Top 51%)9080(Top 60%)9080(Top 172%)
40K24.85 mi0.85 mi9783-2557812-1057812-10516235(Top 61%)10216(Top 67%)10216(Top 193%)
25.2M25.20 mi0.35 mi9888-1057853-417853-4115880(Top 60%)10044(Top 66%)10044(Top 190%)
Finish26.22 mi1.02 mi10367-4798071-2188071-21819438(Top 73%)11713(Top 77%)11713(Top 222%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 26%
×21stories
+97ft-345ft

Overall

7046

Males

6279

M18-39

6279

5K→10K

3.1 - 6.2 mi

Top 24%
×5stories
+79ft-138ft

Overall

6404

Males

5784

M18-39

5784

10K→15K

6.2 - 9.3 mi

Top 26%
×3stories
+67ft-78ft

Overall

7046

Males

6279

M18-39

6279

15K→20K

9.3 - 12.4 mi

Top 30%
×5stories
+106ft-86ft

Overall

7875

Males

6807

M18-39

6807

20K→Half

12.4 - 13.1 mi

Top 30%
×2stories
+19ft-37ft

Overall

8100

Males

6972

M18-39

6972

Half→25K

13.1 - 15.5 mi

Top 38%
×4stories
+66ft-88ft

Overall

10070

Males

8028

M18-39

8028

25K→30K

15.5 - 18.6 mi

Top 44%
×9stories
+181ft-148ft

Overall

11667

Males

8647

M18-39

8647

30K→20M

18.6 - 20.0 mi

Top 61%
×5stories
+64ft-50ft

Overall

16328

Males

10534

M18-39

10534

20M→21M

20.0 - 21.0 mi

Top 51%
×8stories
+106ft-24ft

Overall

13569

Males

9296

M18-39

9296

21M→35K

21.0 - 21.8 mi

Top 55%
×7stories
+17ft-86ft

Overall

14655

Males

9706

M18-39

9706

35K→23M

21.8 - 23.0 mi

Top 58%
×5stories
+23ft-63ft

Overall

15541

Males

10043

M18-39

10043

23M→24M

23.0 - 24.0 mi

Top 51%
×6stories
+12ft-82ft

Overall

13504

Males

9080

M18-39

9080

24M→40K

24.0 - 24.9 mi

Top 61%
×1story
+6ft-20ft

Overall

16235

Males

10216

M18-39

10216

40K→25.2M

24.9 - 25.2 mi

Top 60%
×1story
+13ft-16ft

Overall

15880

Males

10044

M18-39

10044

25.2M→Finish

25.2 - 26.2 mi

Top 73%
×2stories
+22ft-21ft

Overall

19438

Males

11713

M18-39

11713

Passing Analysis

Category:
Athletes Passed
323*
Passed By
4920
Net Change
-4598
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5769
5K → 10K81365-284#5769#6053
10K → 15K34366-332#6053#6385
15K → 20K32377-345#6385#6730
20K → Half662-56#6730#6786
Half → 25K20399-379#6786#7165
25K → 30K31665-634#7165#7799
30K → 20M9641-632#7799#8431
20M → 21M19318-299#8431#8730
21M → 35K13228-215#8730#8945
35K → 23M17398-381#8945#9326
23M → 24M25227-202#9326#9528
24M → 40K17*272-255#9528#9783
40K → 25.2M11116-105#9783#9888
25.2M → Finish8486-479#9888#10367
TOTALS323*4920-4598

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

Passing Visuals

Category:
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🔥Passing Intensity

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing