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BOSTON MARATHON 2023

Michael Karl

Bib: 9478•M

PA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 16%
Gender (Male)
#0 / 15176
Top 26%
Masters (Masters Men)
#0 / 9891
Top 12%
Division (M45-49)
#0 / 2252
Top 15%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:20
Rank: #7408
Start → 5K
22:20 | 7:11/mi
10K· 6.21 mi
43:58
Rank: #6947 (+461)
5K → 10K
21:38 | 6:58/mi
15K· 9.32 mi
1:05:51
Rank: #6863 (+84)
10K → 15K
21:53 | 7:03/mi
20K· 12.43 mi
1:27:45
Rank: #6700 (+163)
15K → 20K
21:54 | 7:03/mi
Half· 13.11 mi
1:32:29
Rank: #6664 (+36)
20K → Half
4:44 | 6:56/mi
25K· 15.53 mi
1:49:18
Rank: #6423 (+241)
Half → 25K
16:49 | 6:56/mi
30K· 18.64 mi
2:10:37
Rank: #5852 (+571)
25K → 30K
21:19 | 6:52/mi
20M
2:19:38
Rank: #5547 (+305)
30K → 20M
9:01 | 6:38/mi
21M
2:26:37
Rank: #5294 (+253)
20M → 21M
6:59 | 6:59/mi
35K· 21.75 mi
2:31:16
Rank: #5096 (+198)
21M → 35K
4:39 | 6:13/mi
23M
2:39:25
Rank: #4791 (+305)
35K → 23M
8:09 | 6:31/mi
24M
2:45:36
Rank: #4550 (+241)
23M → 24M
6:11 | 6:11/mi
40K· 24.85 mi
2:51:06
Rank: #4381 (+169)
24M → 40K
5:30 | 6:26/mi
25.2M
2:53:29
Rank: #4290 (+91)
40K → 25.2M
2:23 | 6:55/mi
Finish· 26.22 mi
2:59:51
Rank: #4150 (+140)
25.2M → Finish
6:22 | 6:15/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:32:29
Pace7:03 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:27:22
Pace6:40 /mi
📊Negative Split: 5.5% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:0622:207:1122:20
7:11
-
10K
6.21 mi11:09:4443:587:0521:38
6:58
-0:13
15K
9.32 mi11:31:371:05:517:0421:53
7:03
+0:05
20K
12.43 mi11:53:311:27:457:0421:54
7:03
0:00
Half
13.11 mi11:58:151:32:297:034:44
6:56
-0:07
25K
15.53 mi12:15:041:49:187:0216:49
6:56
0:00
30K
18.64 mi12:36:232:10:377:0021:19
6:52
-0:04
20M
20.00 mi12:45:242:19:386:599:01
6:38
-0:14
21M
21.00 mi12:52:232:26:376:596:59
6:59
+0:21
35K
21.75 mi12:57:022:31:166:574:39
6:13
-0:46
23M
23.00 mi13:05:112:39:256:568:09
6:31
+0:18
24M
24.00 mi13:11:222:45:366:546:11
6:11
-0:20
40K
24.85 mi13:16:522:51:066:535:30
6:26
+0:15
25.2M
25.20 mi13:19:152:53:296:532:23
6:55
+0:29
Finish
26.22 mi13:25:372:59:516:526:22
6:15
-0:40

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

6:11 /mi

Average Pace

6:52 /mi

Slowest Pace

7:11 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

39:52

22% of race

Time at Steady Pace

2:19:59

78% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:52 /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 mi10:48:0622:207:1122:20
7:11
#7408
10K
6.21 mi11:09:4443:587:0521:38
6:58
#6947
15K
9.32 mi11:31:371:05:517:0421:53
7:03
#6863
20K
12.43 mi11:53:311:27:457:0421:54
7:03
#6700
Half
13.11 mi11:58:151:32:297:034:44
6:56
#6664
25K
15.53 mi12:15:041:49:187:0216:49
6:56
#6423
30K
18.64 mi12:36:232:10:377:0021:19
6:52
#5852
20M
20.00 mi12:45:242:19:386:599:01
6:38
#5547
21M
21.00 mi12:52:232:26:376:596:59
6:59
#5294
35K
21.75 mi12:57:022:31:166:574:39
6:13
#5096
23M
23.00 mi13:05:112:39:256:568:09
6:31
#4791
24M
24.00 mi13:11:222:45:366:546:11
6:11
#4550
40K
24.85 mi13:16:522:51:066:535:30
6:26
#4381
25.2M
25.20 mi13:19:152:53:296:532:23
6:55
#4290
Finish
26.22 mi13:25:372:59:516:526:22
6:15
#4150
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi7408657465746814(Top 26%)6098(Top 40%)6098(Top 271%)
10K6.21 mi3.10 mi6947+4616222+3526222+3526561(Top 25%)5899(Top 39%)5899(Top 262%)
15K9.32 mi3.11 mi6863+846147+756147+756814(Top 26%)6098(Top 40%)6098(Top 271%)
20K12.43 mi3.11 mi6700+1636014+1336014+1336257(Top 24%)5661(Top 37%)5661(Top 251%)
Half13.11 mi0.68 mi6664+365985+295985+296139(Top 23%)5582(Top 37%)5582(Top 248%)
25K15.53 mi2.42 mi6423+2415794+1915794+1915163(Top 19%)4761(Top 31%)4761(Top 211%)
30K18.64 mi3.11 mi5852+5715350+4445350+4443396(Top 13%)3196(Top 21%)3196(Top 142%)
20M20.00 mi1.36 mi5547+3055097+2535097+2532030(Top 8%)1935(Top 13%)1935(Top 86%)
21M21.00 mi1.00 mi5294+2534875+2224875+2222108(Top 8%)1994(Top 13%)1994(Top 89%)
35K21.75 mi0.75 mi5096+1984702+1734702+1731321(Top 5%)1258(Top 8%)1258(Top 56%)
23M23.00 mi1.25 mi4791+3054448+2544448+2541474(Top 6%)1401(Top 9%)1401(Top 62%)
24M24.00 mi1.00 mi4550+2414240+2084240+208995(Top 4%)944(Top 6%)944(Top 42%)
40K24.85 mi0.85 mi4381+1694090+1504090+1501342(Top 5%)1269(Top 8%)1269(Top 56%)
25.2M25.20 mi0.35 mi4290+914006+844006+841529(Top 6%)1446(Top 10%)1446(Top 64%)
Finish26.22 mi1.02 mi4150+1403882+1243882+1241453(Top 5%)1376(Top 9%)1376(Top 61%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 26%
×21stories
+97ft-345ft

Overall

6814

Males

6098

M45-49

6098

5K→10K

3.1 - 6.2 mi

Top 25%
×5stories
+79ft-138ft

Overall

6561

Males

5899

M45-49

5899

10K→15K

6.2 - 9.3 mi

Top 26%
×3stories
+67ft-78ft

Overall

6814

Males

6098

M45-49

6098

15K→20K

9.3 - 12.4 mi

Top 24%
×5stories
+106ft-86ft

Overall

6257

Males

5661

M45-49

5661

20K→Half

12.4 - 13.1 mi

Top 23%
×2stories
+19ft-37ft

Overall

6139

Males

5582

M45-49

5582

Half→25K

13.1 - 15.5 mi

Top 19%
×4stories
+66ft-88ft

Overall

5163

Males

4761

M45-49

4761

25K→30K

15.5 - 18.6 mi

Top 13%
×9stories
+181ft-148ft

Overall

3396

Males

3196

M45-49

3196

30K→20M

18.6 - 20.0 mi

Top 8%
×5stories
+64ft-50ft

Overall

2030

Males

1935

M45-49

1935

20M→21M

20.0 - 21.0 mi

Top 8%
×8stories
+106ft-24ft

Overall

2108

Males

1994

M45-49

1994

21M→35K

21.0 - 21.8 mi

Top 5%
×7stories
+17ft-86ft

Overall

1321

Males

1258

M45-49

1258

35K→23M

21.8 - 23.0 mi

Top 6%
×5stories
+23ft-63ft

Overall

1474

Males

1401

M45-49

1401

23M→24M

23.0 - 24.0 mi

Top 4%
×6stories
+12ft-82ft

Overall

995

Males

944

M45-49

944

24M→40K

24.0 - 24.9 mi

Top 5%
×1story
+6ft-20ft

Overall

1342

Males

1269

M45-49

1269

40K→25.2M

24.9 - 25.2 mi

Top 6%
×1story
+13ft-16ft

Overall

1529

Males

1446

M45-49

1446

25.2M→Finish

25.2 - 26.2 mi

Top 5%
×2stories
+22ft-21ft

Overall

1453

Males

1376

M45-49

1376

Passing Analysis

Category:
Athletes Passed
3440
Passed By
182
Net Change
+3258
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7408
5K → 10K51251+461#7408#6947
10K → 15K17187+84#6947#6863
15K → 20K19532+163#6863#6700
20K → Half404+36#6700#6664
Half → 25K2476+241#6664#6423
25K → 30K5710+571#6423#5852
30K → 20M3050+305#5852#5547
20M → 21M2530+253#5547#5294
21M → 35K1980+198#5294#5096
35K → 23M3050+305#5096#4791
23M → 24M2410+241#4791#4550
24M → 40K1690+169#4550#4381
40K → 25.2M910+91#4381#4290
25.2M → Finish1422+140#4290#4150
TOTALS3440182+3258
📊

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