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BOSTON MARATHON 2023

Eric Kosek

Bib: 1646•M

PA

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 23%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:19
Rank: #5216
Start → 5K
21:19 | 6:52/mi
10K· 6.21 mi
42:36
Rank: #5456 (-240)
5K → 10K
21:17 | 6:51/mi
15K· 9.32 mi
1:03:44
Rank: #5333 (+123)
10K → 15K
21:08 | 6:48/mi
20K· 12.43 mi
1:24:49
Rank: #5071 (+262)
15K → 20K
21:05 | 6:47/mi
Half· 13.11 mi
1:29:21
Rank: #4996 (+75)
20K → Half
4:32 | 6:39/mi
25K· 15.53 mi
1:45:46
Rank: #4775 (+221)
Half → 25K
16:25 | 6:46/mi
30K· 18.64 mi
2:07:27
Rank: #4640 (+135)
25K → 30K
21:41 | 6:59/mi
20M
2:16:52
Rank: #4525 (+115)
30K → 20M
9:25 | 6:56/mi
21M
2:23:54
Rank: #4333 (+192)
20M → 21M
7:02 | 7:02/mi
35K· 21.75 mi
2:28:45
Rank: #4212 (+121)
21M → 35K
4:51 | 6:29/mi
23M
2:37:18
Rank: #4101 (+111)
35K → 23M
8:33 | 6:50/mi
24M
2:43:51
Rank: #3975 (+126)
23M → 24M
6:33 | 6:33/mi
40K· 24.85 mi
2:49:26
Rank: #3809 (+166)
24M → 40K
5:35 | 6:32/mi
25.2M
2:51:49
Rank: #3736 (+73)
40K → 25.2M
2:23 | 6:55/mi
Finish· 26.22 mi
2:57:58
Rank: #3484 (+252)
25.2M → Finish
6:09 | 6:02/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:29:21
Pace6:49 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:28:37
Pace6:46 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:0221:196:5221:19
6:52
-
10K
6.21 mi11:08:1942:366:5121:17
6:51
-0:01
15K
9.32 mi11:29:271:03:446:5021:08
6:48
-0:03
20K
12.43 mi11:50:321:24:496:4921:05
6:47
-0:01
Half
13.11 mi11:55:041:29:216:494:32
6:39
-0:08
25K
15.53 mi12:11:291:45:466:4916:25
6:46
+0:07
30K
18.64 mi12:33:102:07:276:5021:41
6:59
+0:13
20M
20.00 mi12:42:352:16:526:519:25
6:56
-0:03
21M
21.00 mi12:49:372:23:546:517:02
7:02
+0:06
35K
21.75 mi12:54:282:28:456:504:51
6:29
-0:33
23M
23.00 mi13:03:012:37:186:508:33
6:50
+0:21
24M
24.00 mi13:09:342:43:516:506:33
6:33
-0:17
40K
24.85 mi13:15:092:49:266:495:35
6:32
-0:01
25.2M
25.20 mi13:17:322:51:496:492:23
6:55
+0:23
Finish
26.22 mi13:23:412:57:586:486:09
6:02
-0:53

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

6:02 /mi

Average Pace

6:48 /mi

Slowest Pace

7:02 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

23:08

13% of race

Time at Steady Pace

2:34:50

87% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:47 /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 mi10:47:0221:196:5221:19
6:52
#5216
10K
6.21 mi11:08:1942:366:5121:17
6:51
#5456
15K
9.32 mi11:29:271:03:446:5021:08
6:48
#5333
20K
12.43 mi11:50:321:24:496:4921:05
6:47
#5071
Half
13.11 mi11:55:041:29:216:494:32
6:39
#4996
25K
15.53 mi12:11:291:45:466:4916:25
6:46
#4775
30K
18.64 mi12:33:102:07:276:5021:41
6:59
#4640
20M
20.00 mi12:42:352:16:526:519:25
6:56
#4525
21M
21.00 mi12:49:372:23:546:517:02
7:02
#4333
35K
21.75 mi12:54:282:28:456:504:51
6:29
#4212
23M
23.00 mi13:03:012:37:186:508:33
6:50
#4101
24M
24.00 mi13:09:342:43:516:506:33
6:33
#3975
40K
24.85 mi13:15:092:49:266:495:35
6:32
#3809
25.2M
25.20 mi13:17:322:51:496:492:23
6:55
#3736
Finish
26.22 mi13:23:412:57:586:486:09
6:02
#3484
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi5216483048305116(Top 19%)4733(Top 31%)4733(Top 211%)
10K6.21 mi3.10 mi5456-2405036-2065036-2065728(Top 22%)5240(Top 35%)5240(Top 234%)
15K9.32 mi3.11 mi5333+1234934+1024934+1025116(Top 19%)4733(Top 31%)4733(Top 211%)
20K12.43 mi3.11 mi5071+2624708+2264708+2264291(Top 16%)4008(Top 26%)4008(Top 179%)
Half13.11 mi0.68 mi4996+754644+644644+643777(Top 14%)3561(Top 23%)3561(Top 159%)
25K15.53 mi2.42 mi4775+2214446+1984446+1983889(Top 15%)3657(Top 24%)3657(Top 163%)
30K18.64 mi3.11 mi4640+1354327+1194327+1194205(Top 16%)3919(Top 26%)3919(Top 175%)
20M20.00 mi1.36 mi4525+1154218+1094218+1093581(Top 13%)3340(Top 22%)3340(Top 149%)
21M21.00 mi1.00 mi4333+1924049+1694049+1692326(Top 9%)2199(Top 14%)2199(Top 98%)
35K21.75 mi0.75 mi4212+1213941+1083941+1082355(Top 9%)2235(Top 15%)2235(Top 100%)
23M23.00 mi1.25 mi4101+1113841+1003841+1002830(Top 11%)2646(Top 17%)2646(Top 118%)
24M24.00 mi1.00 mi3975+1263723+1183723+1182334(Top 9%)2185(Top 14%)2185(Top 98%)
40K24.85 mi0.85 mi3809+1663580+1433580+1431678(Top 6%)1581(Top 10%)1581(Top 71%)
25.2M25.20 mi0.35 mi3736+733511+693511+691523(Top 6%)1440(Top 9%)1440(Top 64%)
Finish26.22 mi1.02 mi3484+2523283+2283283+228836(Top 3%)802(Top 5%)802(Top 36%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 19%
×21stories
+97ft-345ft

Overall

5116

Males

4733

M40-44

4733

5K→10K

3.1 - 6.2 mi

Top 22%
×5stories
+79ft-138ft

Overall

5728

Males

5240

M40-44

5240

10K→15K

6.2 - 9.3 mi

Top 19%
×3stories
+67ft-78ft

Overall

5116

Males

4733

M40-44

4733

15K→20K

9.3 - 12.4 mi

Top 16%
×5stories
+106ft-86ft

Overall

4291

Males

4008

M40-44

4008

20K→Half

12.4 - 13.1 mi

Top 14%
×2stories
+19ft-37ft

Overall

3777

Males

3561

M40-44

3561

Half→25K

13.1 - 15.5 mi

Top 15%
×4stories
+66ft-88ft

Overall

3889

Males

3657

M40-44

3657

25K→30K

15.5 - 18.6 mi

Top 16%
×9stories
+181ft-148ft

Overall

4205

Males

3919

M40-44

3919

30K→20M

18.6 - 20.0 mi

Top 13%
×5stories
+64ft-50ft

Overall

3581

Males

3340

M40-44

3340

20M→21M

20.0 - 21.0 mi

Top 9%
×8stories
+106ft-24ft

Overall

2326

Males

2199

M40-44

2199

21M→35K

21.0 - 21.8 mi

Top 9%
×7stories
+17ft-86ft

Overall

2355

Males

2235

M40-44

2235

35K→23M

21.8 - 23.0 mi

Top 11%
×5stories
+23ft-63ft

Overall

2830

Males

2646

M40-44

2646

23M→24M

23.0 - 24.0 mi

Top 9%
×6stories
+12ft-82ft

Overall

2334

Males

2185

M40-44

2185

24M→40K

24.0 - 24.9 mi

Top 6%
×1story
+6ft-20ft

Overall

1678

Males

1581

M40-44

1581

40K→25.2M

24.9 - 25.2 mi

Top 6%
×1story
+13ft-16ft

Overall

1523

Males

1440

M40-44

1440

25.2M→Finish

25.2 - 26.2 mi

Top 3%
×2stories
+22ft-21ft

Overall

836

Males

802

M40-44

802

Passing Analysis

Category:
Athletes Passed
2274
Passed By
542
Net Change
+1732
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5216
5K → 10K108348-240#5216#5456
10K → 15K17855+123#5456#5333
15K → 20K28119+262#5333#5071
20K → Half805+75#5071#4996
Half → 25K23211+221#4996#4775
25K → 30K20469+135#4775#4640
30K → 20M12813+115#4640#4525
20M → 21M1931+192#4525#4333
21M → 35K1221+121#4333#4212
35K → 23M12413+111#4212#4101
23M → 24M1315+126#4101#3975
24M → 40K1682+166#3975#3809
40K → 25.2M730+73#3809#3736
25.2M → Finish2520+252#3736#3484
TOTALS2274542+1732
📊

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