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BOSTON MARATHON 2023

Brian Koch

Bib: 8874•M

NJ

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 13%
Gender (Male)
#0 / 15176
Top 22%
Masters (Masters Men)
#0 / 9891
Top 9%
Division (M40-44)
#0 / 2241
Top 24%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:18
Rank: #5176
Start → 5K
21:18 | 6:51/mi
10K· 6.21 mi
42:19
Rank: #5045 (+131)
5K → 10K
21:01 | 6:46/mi
15K· 9.32 mi
1:03:23
Rank: #5000 (+45)
10K → 15K
21:04 | 6:47/mi
20K· 12.43 mi
1:24:32
Rank: #4862 (+138)
15K → 20K
21:09 | 6:48/mi
Half· 13.11 mi
1:29:07
Rank: #4838 (+24)
20K → Half
4:35 | 6:43/mi
25K· 15.53 mi
1:44:55
Rank: #4256 (+582)
Half → 25K
15:48 | 6:31/mi
30K· 18.64 mi
2:06:11
Rank: #4021 (+235)
25K → 30K
21:16 | 6:51/mi
20M
2:15:24
Rank: #3871 (+150)
30K → 20M
9:13 | 6:47/mi
21M
2:22:30
Rank: #3742 (+129)
20M → 21M
7:06 | 7:06/mi
35K· 21.75 mi
2:27:27
Rank: #3696 (+46)
21M → 35K
4:57 | 6:37/mi
23M
2:36:06
Rank: #3617 (+79)
35K → 23M
8:39 | 6:55/mi
24M
2:42:49
Rank: #3587 (+30)
23M → 24M
6:43 | 6:43/mi
40K· 24.85 mi
2:48:44
Rank: #3550 (+37)
24M → 40K
5:55 | 6:55/mi
25.2M
2:51:18
Rank: #3546 (+4)
40K → 25.2M
2:34 | 7:27/mi
Finish· 26.22 mi
2:58:06
Rank: #3525 (+21)
25.2M → Finish
6:48 | 6:40/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:29:07
Pace6:48 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:28:59
Pace6:47 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:2421:186:5121:18
6:51
-
10K
6.21 mi11:08:2542:196:4921:01
6:46
-0:05
15K
9.32 mi11:29:291:03:236:4821:04
6:47
+0:01
20K
12.43 mi11:50:381:24:326:4821:09
6:48
+0:01
Half
13.11 mi11:55:131:29:076:484:35
6:43
-0:05
25K
15.53 mi12:11:011:44:556:4515:48
6:31
-0:12
30K
18.64 mi12:32:172:06:116:4621:16
6:51
+0:20
20M
20.00 mi12:41:302:15:246:469:13
6:47
-0:04
21M
21.00 mi12:48:362:22:306:477:06
7:06
+0:19
35K
21.75 mi12:53:332:27:276:474:57
6:37
-0:29
23M
23.00 mi13:02:122:36:066:478:39
6:55
+0:18
24M
24.00 mi13:08:552:42:496:476:43
6:43
-0:12
40K
24.85 mi13:14:502:48:446:475:55
6:55
+0:12
25.2M
25.20 mi13:17:242:51:186:482:34
7:27
+0:32
Finish
26.22 mi13:24:122:58:066:486:48
6:40
-0:47

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

6:31 /mi

Average Pace

6:48 /mi

Slowest Pace

7:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:55:32

99% of race

Time at Steady Pace

2:34

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:48 /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 mi10:47:2421:186:5121:18
6:51
#5176
10K
6.21 mi11:08:2542:196:4921:01
6:46
#5045
15K
9.32 mi11:29:291:03:236:4821:04
6:47
#5000
20K
12.43 mi11:50:381:24:326:4821:09
6:48
#4862
Half
13.11 mi11:55:131:29:076:484:35
6:43
#4838
25K
15.53 mi12:11:011:44:556:4515:48
6:31
#4256
30K
18.64 mi12:32:172:06:116:4621:16
6:51
#4021
20M
20.00 mi12:41:302:15:246:469:13
6:47
#3871
21M
21.00 mi12:48:362:22:306:477:06
7:06
#3742
35K
21.75 mi12:53:332:27:276:474:57
6:37
#3696
23M
23.00 mi13:02:122:36:066:478:39
6:55
#3617
24M
24.00 mi13:08:552:42:496:476:43
6:43
#3587
40K
24.85 mi13:14:502:48:446:475:55
6:55
#3550
25.2M
25.20 mi13:17:242:51:186:482:34
7:27
#3546
Finish
26.22 mi13:24:122:58:066:486:48
6:40
#3525
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi5176479947994911(Top 18%)4562(Top 30%)4562(Top 204%)
10K6.21 mi3.10 mi5045+1314674+1254674+1254933(Top 19%)4572(Top 30%)4572(Top 204%)
15K9.32 mi3.11 mi5000+454642+324642+324911(Top 18%)4562(Top 30%)4562(Top 204%)
20K12.43 mi3.11 mi4862+1384527+1154527+1154486(Top 17%)4182(Top 28%)4182(Top 187%)
Half13.11 mi0.68 mi4838+244505+224505+224441(Top 17%)4133(Top 27%)4133(Top 184%)
25K15.53 mi2.42 mi4256+5823990+5153990+5152259(Top 8%)2167(Top 14%)2167(Top 97%)
30K18.64 mi3.11 mi4021+2353781+2093781+2093291(Top 12%)3101(Top 20%)3101(Top 138%)
20M20.00 mi1.36 mi3871+1503646+1353646+1352727(Top 10%)2581(Top 17%)2581(Top 115%)
21M21.00 mi1.00 mi3742+1293528+1183528+1182643(Top 10%)2489(Top 16%)2489(Top 111%)
35K21.75 mi0.75 mi3696+463488+403488+403097(Top 12%)2899(Top 19%)2899(Top 129%)
23M23.00 mi1.25 mi3617+793416+723416+723279(Top 12%)3048(Top 20%)3048(Top 136%)
24M24.00 mi1.00 mi3587+303387+293387+293199(Top 12%)2965(Top 20%)2965(Top 132%)
40K24.85 mi0.85 mi3550+373351+363351+363420(Top 13%)3121(Top 21%)3121(Top 139%)
25.2M25.20 mi0.35 mi3546+43347+43347+43596(Top 14%)3224(Top 21%)3224(Top 144%)
Finish26.22 mi1.02 mi3525+213320+273320+273344(Top 13%)3002(Top 20%)3002(Top 134%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 18%
×21stories
+97ft-345ft

Overall

4911

Males

4562

M40-44

4562

5K→10K

3.1 - 6.2 mi

Top 19%
×5stories
+79ft-138ft

Overall

4933

Males

4572

M40-44

4572

10K→15K

6.2 - 9.3 mi

Top 18%
×3stories
+67ft-78ft

Overall

4911

Males

4562

M40-44

4562

15K→20K

9.3 - 12.4 mi

Top 17%
×5stories
+106ft-86ft

Overall

4486

Males

4182

M40-44

4182

20K→Half

12.4 - 13.1 mi

Top 17%
×2stories
+19ft-37ft

Overall

4441

Males

4133

M40-44

4133

Half→25K

13.1 - 15.5 mi

Top 8%
×4stories
+66ft-88ft

Overall

2259

Males

2167

M40-44

2167

25K→30K

15.5 - 18.6 mi

Top 12%
×9stories
+181ft-148ft

Overall

3291

Males

3101

M40-44

3101

30K→20M

18.6 - 20.0 mi

Top 10%
×5stories
+64ft-50ft

Overall

2727

Males

2581

M40-44

2581

20M→21M

20.0 - 21.0 mi

Top 10%
×8stories
+106ft-24ft

Overall

2643

Males

2489

M40-44

2489

21M→35K

21.0 - 21.8 mi

Top 12%
×7stories
+17ft-86ft

Overall

3097

Males

2899

M40-44

2899

35K→23M

21.8 - 23.0 mi

Top 12%
×5stories
+23ft-63ft

Overall

3279

Males

3048

M40-44

3048

23M→24M

23.0 - 24.0 mi

Top 12%
×6stories
+12ft-82ft

Overall

3199

Males

2965

M40-44

2965

24M→40K

24.0 - 24.9 mi

Top 13%
×1story
+6ft-20ft

Overall

3420

Males

3121

M40-44

3121

40K→25.2M

24.9 - 25.2 mi

Top 14%
×1story
+13ft-16ft

Overall

3596

Males

3224

M40-44

3224

25.2M→Finish

25.2 - 26.2 mi

Top 13%
×2stories
+22ft-21ft

Overall

3344

Males

3002

M40-44

3002

Passing Analysis

Category:
Athletes Passed
2114
Passed By
463
Net Change
+1651
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5176
5K → 10K265134+131#5176#5045
10K → 15K13388+45#5045#5000
15K → 20K18345+138#5000#4862
20K → Half3713+24#4862#4838
Half → 25K5831+582#4838#4256
25K → 30K25419+235#4256#4021
30K → 20M1577+150#4021#3871
20M → 21M1356+129#3871#3742
21M → 35K559+46#3742#3696
35K → 23M10324+79#3696#3617
23M → 24M6030+30#3617#3587
24M → 40K6023+37#3587#3550
40K → 25.2M2117+4#3550#3546
25.2M → Finish6847+21#3546#3525
TOTALS2114463+1651
📊

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