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BOSTON MARATHON 2023

Christopher Klucznik

Bib: 859•M

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 3%
Gender (Male)
#0 / 15176
Top 6%
Masters (Masters Men)
#0 / 9891
Top 1%
Division (M40-44)
#0 / 2241
Top 4%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
18:20
Rank: #534
Start → 5K
18:20 | 5:54/mi
10K· 6.21 mi
36:37
Rank: #548 (-14)
5K → 10K
18:17 | 5:53/mi
15K· 9.32 mi
55:15
Rank: #584 (-36)
10K → 15K
18:38 | 6:00/mi
20K· 12.43 mi
1:14:01
Rank: #590 (-6)
15K → 20K
18:46 | 6:02/mi
Half· 13.11 mi
1:18:08
Rank: #603 (-13)
20K → Half
4:07 | 6:02/mi
25K· 15.53 mi
1:33:01
Rank: #614 (-11)
Half → 25K
14:53 | 6:08/mi
30K· 18.64 mi
1:52:52
Rank: #683 (-69)
25K → 30K
19:51 | 6:23/mi
20M
2:01:45
Rank: #717 (-34)
30K → 20M
8:53 | 6:32/mi
21M
2:08:40
Rank: #752 (-35)
20M → 21M
6:55 | 6:55/mi
35K· 21.75 mi
2:13:28
Rank: #775 (-23)
21M → 35K
4:48 | 6:25/mi
23M
2:21:53
Rank: #804 (-29)
35K → 23M
8:25 | 6:43/mi
24M
2:28:25
Rank: #831 (-27)
23M → 24M
6:32 | 6:32/mi
40K· 24.85 mi
2:34:10
Rank: #851 (-20)
24M → 40K
5:45 | 6:44/mi
25.2M
2:36:38
Rank: #857 (-6)
40K → 25.2M
2:28 | 7:09/mi
Finish· 26.22 mi
2:43:23
Rank: #889 (-32)
25.2M → Finish
6:45 | 6:37/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:18:08
Pace5:58 /mi
2nd Half
Distance13.11 mi
Time1:25:15
Pace6:30 /mi
📊Positive Split: 9.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:18:2718:205:5418:20
5:54
-
10K
6.21 mi10:36:4436:375:5418:17
5:53
-0:01
15K
9.32 mi10:55:2255:155:5618:38
6:00
+0:07
20K
12.43 mi11:14:081:14:015:5718:46
6:02
+0:02
Half
13.11 mi11:18:151:18:085:584:07
6:02
0:00
25K
15.53 mi11:33:081:33:015:5914:53
6:08
+0:06
30K
18.64 mi11:52:591:52:526:0319:51
6:23
+0:15
20M
20.00 mi12:01:522:01:456:058:53
6:32
+0:09
21M
21.00 mi12:08:472:08:406:086:55
6:55
+0:23
35K
21.75 mi12:13:352:13:286:084:48
6:25
-0:30
23M
23.00 mi12:22:002:21:536:108:25
6:43
+0:18
24M
24.00 mi12:28:322:28:256:116:32
6:32
-0:11
40K
24.85 mi12:34:172:34:106:125:45
6:44
+0:12
25.2M
25.20 mi12:36:452:36:386:132:28
7:09
+0:25
Finish
26.22 mi12:43:302:43:236:146:45
6:37
-0:32

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

5:53 /mi

Average Pace

6:14 /mi

Slowest Pace

7:09 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:33:01

57% of race

Time at Steady Pace

40:04

25% of race

Time at Slower Pace

30:18

19% 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

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:18:2718:205:5418:20
5:54
#534
10K
6.21 mi10:36:4436:375:5418:17
5:53
#548
15K
9.32 mi10:55:2255:155:5618:38
6:00
#584
20K
12.43 mi11:14:081:14:015:5718:46
6:02
#590
Half
13.11 mi11:18:151:18:085:584:07
6:02
#603
25K
15.53 mi11:33:081:33:015:5914:53
6:08
#614
30K
18.64 mi11:52:591:52:526:0319:51
6:23
#683
20M
20.00 mi12:01:522:01:456:058:53
6:32
#717
21M
21.00 mi12:08:472:08:406:086:55
6:55
#752
35K
21.75 mi12:13:352:13:286:084:48
6:25
#775
23M
23.00 mi12:22:002:21:536:108:25
6:43
#804
24M
24.00 mi12:28:322:28:256:116:32
6:32
#831
40K
24.85 mi12:34:172:34:106:125:45
6:44
#851
25.2M
25.20 mi12:36:452:36:386:132:28
7:09
#857
Finish
26.22 mi12:43:302:43:236:146:45
6:37
#889
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi534492492707(Top 3%)664(Top 4%)664(Top 30%)
10K6.21 mi3.10 mi548-14506-14506-14566(Top 2%)523(Top 3%)523(Top 23%)
15K9.32 mi3.11 mi584-36541-35541-35707(Top 3%)664(Top 4%)664(Top 30%)
20K12.43 mi3.11 mi590-6547-6547-6640(Top 2%)599(Top 4%)599(Top 27%)
Half13.11 mi0.68 mi603-13560-13560-13853(Top 3%)811(Top 5%)811(Top 36%)
25K15.53 mi2.42 mi614-11573-13573-13837(Top 3%)793(Top 5%)793(Top 35%)
30K18.64 mi3.11 mi683-69641-68641-681172(Top 4%)1117(Top 7%)1117(Top 50%)
20M20.00 mi1.36 mi717-34675-34675-341565(Top 6%)1493(Top 10%)1493(Top 67%)
21M21.00 mi1.00 mi752-35710-35710-351792(Top 7%)1704(Top 11%)1704(Top 76%)
35K21.75 mi0.75 mi775-23732-22732-221993(Top 7%)1891(Top 12%)1891(Top 84%)
23M23.00 mi1.25 mi804-29760-28760-282236(Top 8%)2107(Top 14%)2107(Top 94%)
24M24.00 mi1.00 mi831-27785-25785-252208(Top 8%)2066(Top 14%)2066(Top 92%)
40K24.85 mi0.85 mi851-20805-20805-202426(Top 9%)2246(Top 15%)2246(Top 100%)
25.2M25.20 mi0.35 mi857-6811-6811-62226(Top 8%)2059(Top 14%)2059(Top 92%)
Finish26.22 mi1.02 mi889-32843-32843-323060(Top 11%)2755(Top 18%)2755(Top 123%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 3%
×21stories
+97ft-345ft

Overall

707

Males

664

M40-44

664

5K→10K

3.1 - 6.2 mi

Top 2%
×5stories
+79ft-138ft

Overall

566

Males

523

M40-44

523

10K→15K

6.2 - 9.3 mi

Top 3%
×3stories
+67ft-78ft

Overall

707

Males

664

M40-44

664

15K→20K

9.3 - 12.4 mi

Top 2%
×5stories
+106ft-86ft

Overall

640

Males

599

M40-44

599

20K→Half

12.4 - 13.1 mi

Top 3%
×2stories
+19ft-37ft

Overall

853

Males

811

M40-44

811

Half→25K

13.1 - 15.5 mi

Top 3%
×4stories
+66ft-88ft

Overall

837

Males

793

M40-44

793

25K→30K

15.5 - 18.6 mi

Top 4%
×9stories
+181ft-148ft

Overall

1172

Males

1117

M40-44

1117

30K→20M

18.6 - 20.0 mi

Top 6%
×5stories
+64ft-50ft

Overall

1565

Males

1493

M40-44

1493

20M→21M

20.0 - 21.0 mi

Top 7%
×8stories
+106ft-24ft

Overall

1792

Males

1704

M40-44

1704

21M→35K

21.0 - 21.8 mi

Top 7%
×7stories
+17ft-86ft

Overall

1993

Males

1891

M40-44

1891

35K→23M

21.8 - 23.0 mi

Top 8%
×5stories
+23ft-63ft

Overall

2236

Males

2107

M40-44

2107

23M→24M

23.0 - 24.0 mi

Top 8%
×6stories
+12ft-82ft

Overall

2208

Males

2066

M40-44

2066

24M→40K

24.0 - 24.9 mi

Top 9%
×1story
+6ft-20ft

Overall

2426

Males

2246

M40-44

2246

40K→25.2M

24.9 - 25.2 mi

Top 8%
×1story
+13ft-16ft

Overall

2226

Males

2059

M40-44

2059

25.2M→Finish

25.2 - 26.2 mi

Top 11%
×2stories
+22ft-21ft

Overall

3060

Males

2755

M40-44

2755

Passing Analysis

Category:
Athletes Passed
115
Passed By
470
Net Change
-355
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#534
5K → 10K2741-14#534#548
10K → 15K642-36#548#584
15K → 20K1420-6#584#590
20K → Half114-13#590#603
Half → 25K1526-11#603#614
25K → 30K776-69#614#683
30K → 20M438-34#683#717
20M → 21M641-35#717#752
21M → 35K124-23#752#775
35K → 23M736-29#775#804
23M → 24M431-27#804#831
24M → 40K727-20#831#851
40K → 25.2M410-6#851#857
25.2M → Finish1244-32#857#889
TOTALS115470-355
📊

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