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BOSTON MARATHON 2023

Brent Kocis

Bib: 455•M

MA

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0:00
0:00
/ mi
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Overall
#0 / 26622
Top 3%
Gender (Male)
#0 / 15176
Top 6%
Age Group (M18-39)
#0 / 5285
Top 14%
Race Day Weather
49°/39°F
light intensity drizzle

Race Timeline and Course Information

Your journey through the course with elevation, pacing, and checkpoint details

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K· 3.11 mi
18:33
Rank: #636
Start → 5K
18:33 | 5:58/mi
10K· 6.21 mi
36:54
Rank: #620 (+16)
5K → 10K
18:21 | 5:54/mi
15K· 9.32 mi
55:31
Rank: #639 (-19)
10K → 15K
18:37 | 6:00/mi
20K· 12.43 mi
1:14:10
Rank: #613 (+26)
15K → 20K
18:39 | 6:00/mi
Half· 13.11 mi
1:18:12
Rank: #609 (+4)
20K → Half
4:02 | 5:55/mi
25K· 15.53 mi
1:32:42
Rank: #579 (+30)
Half → 25K
14:30 | 5:59/mi
30K· 18.64 mi
1:51:53
Rank: #578 (+1)
25K → 30K
19:11 | 6:10/mi
20M
2:00:14
Rank: #571 (+7)
30K → 20M
8:21 | 6:09/mi
21M
2:07:00
Rank: #590 (-19)
20M → 21M
6:46 | 6:46/mi
35K· 21.75 mi
2:11:42
Rank: #608 (-18)
21M → 35K
4:42 | 6:17/mi
23M
2:20:09
Rank: #644 (-36)
35K → 23M
8:27 | 6:45/mi
24M
2:26:43
Rank: #690 (-46)
23M → 24M
6:34 | 6:34/mi
40K· 24.85 mi
2:33:12
Rank: #762 (-72)
24M → 40K
6:29 | 7:35/mi
25.2M
2:35:51
Rank: #786 (-24)
40K → 25.2M
2:39 | 7:41/mi
Finish· 26.22 mi
2:43:30
Rank: #904 (-118)
25.2M → Finish
7:39 | 7:30/mi
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Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via Half
Distance13.11 mi
Time1:18:12
Pace5:58 /mi
2nd Half
Distance13.11 mi
Time1:25:18
Pace6:30 /mi
📊Positive Split: 9.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:18:4118:335:5818:33
5:58
-
10K
6.21 mi10:37:0236:545:5618:21
5:54
-0:04
15K
9.32 mi10:55:3955:315:5718:37
6:00
+0:06
20K
12.43 mi11:14:181:14:105:5818:39
6:00
0:00
Half
13.11 mi11:18:201:18:125:584:02
5:55
-0:05
25K
15.53 mi11:32:501:32:425:5814:30
5:59
+0:04
30K
18.64 mi11:52:011:51:536:0019:11
6:10
+0:11
20M
20.00 mi12:00:222:00:146:018:21
6:09
-0:01
21M
21.00 mi12:07:082:07:006:036:46
6:46
+0:37
35K
21.75 mi12:11:502:11:426:034:42
6:17
-0:29
23M
23.00 mi12:20:172:20:096:068:27
6:45
+0:28
24M
24.00 mi12:26:512:26:436:076:34
6:34
-0:11
40K
24.85 mi12:33:202:33:126:106:29
7:35
+1:01
25.2M
25.20 mi12:35:592:35:516:112:39
7:41
+0:06
Finish
26.22 mi12:43:382:43:306:147:39
7:30
-0:11

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

📈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

5:54 /mi

Average Pace

6:14 /mi

Slowest Pace

7:41 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

2:04:56

76% of race

Time at Slower Pace

38:34

24% of race

Average Pace: 6:14 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:18:4118:335:5818:33
5:58
#636
10K
6.21 mi10:37:0236:545:5618:21
5:54
#620
15K
9.32 mi10:55:3955:315:5718:37
6:00
#639
20K
12.43 mi11:14:181:14:105:5818:39
6:00
#613
Half
13.11 mi11:18:201:18:125:584:02
5:55
#609
25K
15.53 mi11:32:501:32:425:5814:30
5:59
#579
30K
18.64 mi11:52:011:51:536:0019:11
6:10
#578
20M
20.00 mi12:00:222:00:146:018:21
6:09
#571
21M
21.00 mi12:07:082:07:006:036:46
6:46
#590
35K
21.75 mi12:11:502:11:426:034:42
6:17
#608
23M
23.00 mi12:20:172:20:096:068:27
6:45
#644
24M
24.00 mi12:26:512:26:436:076:34
6:34
#690
40K
24.85 mi12:33:202:33:126:106:29
7:35
#762
25.2M
25.20 mi12:35:592:35:516:112:39
7:41
#786
Finish
26.22 mi12:43:382:43:306:147:39
7:30
#904
Faster pace
Steady pace
Slower pace

Rankings

Your position at each checkpoint and how you ranked in each segment

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi636592592689(Top 3%)646(Top 4%)646(Top 12%)
10K6.21 mi3.10 mi620+16576+16576+16604(Top 2%)561(Top 4%)561(Top 11%)
15K9.32 mi3.11 mi639-19596-20596-20689(Top 3%)646(Top 4%)646(Top 12%)
20K12.43 mi3.11 mi613+26570+26570+26563(Top 2%)523(Top 3%)523(Top 10%)
Half13.11 mi0.68 mi609+4566+4566+4587(Top 2%)549(Top 4%)549(Top 10%)
25K15.53 mi2.42 mi579+30538+28538+28531(Top 2%)494(Top 3%)494(Top 9%)
30K18.64 mi3.11 mi578+1538538635(Top 2%)599(Top 4%)599(Top 11%)
20M20.00 mi1.36 mi571+7531+7531+7570(Top 2%)536(Top 4%)536(Top 10%)
21M21.00 mi1.00 mi590-19550-19550-191290(Top 5%)1231(Top 8%)1231(Top 23%)
35K21.75 mi0.75 mi608-18568-18568-181483(Top 6%)1407(Top 9%)1407(Top 27%)
23M23.00 mi1.25 mi644-36603-35603-352354(Top 9%)2211(Top 15%)2211(Top 42%)
24M24.00 mi1.00 mi690-46649-46649-462356(Top 9%)2199(Top 14%)2199(Top 42%)
40K24.85 mi0.85 mi762-72720-71720-717162(Top 27%)5710(Top 38%)5710(Top 108%)
25.2M25.20 mi0.35 mi786-24743-23743-234682(Top 18%)4035(Top 27%)4035(Top 76%)
Finish26.22 mi1.02 mi904-118858-115858-1158543(Top 32%)6473(Top 43%)6473(Top 122%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 3%
×21stories
+97ft-345ft

Overall

689

Males

646

M18-39

646

5K→10K

3.1 - 6.2 mi

Top 2%
×5stories
+79ft-138ft

Overall

604

Males

561

M18-39

561

10K→15K

6.2 - 9.3 mi

Top 3%
×3stories
+67ft-78ft

Overall

689

Males

646

M18-39

646

15K→20K

9.3 - 12.4 mi

Top 2%
×5stories
+106ft-86ft

Overall

563

Males

523

M18-39

523

20K→Half

12.4 - 13.1 mi

Top 2%
×2stories
+19ft-37ft

Overall

587

Males

549

M18-39

549

Half→25K

13.1 - 15.5 mi

Top 2%
×4stories
+66ft-88ft

Overall

531

Males

494

M18-39

494

25K→30K

15.5 - 18.6 mi

Top 2%
×9stories
+181ft-148ft

Overall

635

Males

599

M18-39

599

30K→20M

18.6 - 20.0 mi

Top 2%
×5stories
+64ft-50ft

Overall

570

Males

536

M18-39

536

20M→21M

20.0 - 21.0 mi

Top 5%
×8stories
+106ft-24ft

Overall

1290

Males

1231

M18-39

1231

21M→35K

21.0 - 21.8 mi

Top 6%
×7stories
+17ft-86ft

Overall

1483

Males

1407

M18-39

1407

35K→23M

21.8 - 23.0 mi

Top 9%
×5stories
+23ft-63ft

Overall

2354

Males

2211

M18-39

2211

23M→24M

23.0 - 24.0 mi

Top 9%
×6stories
+12ft-82ft

Overall

2356

Males

2199

M18-39

2199

24M→40K

24.0 - 24.9 mi

Top 27%
×1story
+6ft-20ft

Overall

7162

Males

5710

M18-39

5710

40K→25.2M

24.9 - 25.2 mi

Top 18%
×1story
+13ft-16ft

Overall

4682

Males

4035

M18-39

4035

25.2M→Finish

25.2 - 26.2 mi

Top 32%
×2stories
+22ft-21ft

Overall

8543

Males

6473

M18-39

6473

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
168
Passed By
436
Net Change
-268
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#636
5K → 10K3721+16#636#620
10K → 15K1130-19#620#639
15K → 20K315+26#639#613
20K → Half62+4#613#609
Half → 25K333+30#609#579
25K → 30K1615+1#579#578
30K → 20M158+7#578#571
20M → 21M423-19#571#590
21M → 35K321-18#590#608
35K → 23M642-36#608#644
23M → 24M248-46#644#690
24M → 40K173-72#690#762
40K → 25.2M125-24#762#786
25.2M → Finish2120-118#786#904
TOTALS168436-268
📊

Passing Analysis Visualizations

Explore your passing analysis through 5 different visualizations. Scroll to discover each one.

Time:
Category:

📈Position Graph

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🎨Heatmap Timeline

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Activity Data

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing