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BOSTON MARATHON 2023

Thomas Klein

Bib: 12583•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 45%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Top 49%
Division (M45-49)
#0 / 2252
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:38
Rank: #8025
Start → 5K
22:38 | 7:17/mi
10K· 6.21 mi
44:51
Rank: #7881 (+144)
5K → 10K
22:13 | 7:09/mi
15K· 9.32 mi
1:07:21
Rank: #7946 (-65)
10K → 15K
22:30 | 7:15/mi
20K· 12.43 mi
1:30:01
Rank: #7859 (+87)
15K → 20K
22:40 | 7:18/mi
Half· 13.11 mi
1:35:06
Rank: #7938 (-79)
20K → Half
5:05 | 7:27/mi
25K· 15.53 mi
1:53:29
Rank: #8108 (-170)
Half → 25K
18:23 | 7:35/mi
30K· 18.64 mi
2:20:06
Rank: #9276 (-1168)
25K → 30K
26:37 | 8:34/mi
20M
2:31:55
Rank: #9706 (-430)
30K → 20M
11:49 | 8:42/mi
21M
2:41:06
Rank: #9989 (-283)
20M → 21M
9:11 | 9:11/mi
35K· 21.75 mi
2:48:11
Rank: #10449 (-460)
21M → 35K
7:05 | 9:28/mi
23M
2:59:35
Rank: #10859 (-410)
35K → 23M
11:24 | 9:06/mi
24M
3:08:37
Rank: #11234 (-375)
23M → 24M
9:02 | 9:02/mi
40K· 24.85 mi
3:16:22
Rank: #11488 (-254)
24M → 40K
7:45 | 9:04/mi
25.2M
3:19:42
Rank: #11569 (-81)
40K → 25.2M
3:20 | 9:40/mi
Finish· 26.22 mi
3:28:51
Rank: #11914 (-345)
25.2M → Finish
9:09 | 8:59/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:35:06
Pace7:15 /mi
2nd Half
Distance13.11 mi
Time1:53:45
Pace8:41 /mi
📊Positive Split: 19.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:1322:387:1722:38
7:17
-
10K
6.21 mi11:12:2644:517:1322:13
7:09
-0:08
15K
9.32 mi11:34:561:07:217:1422:30
7:15
+0:06
20K
12.43 mi11:57:361:30:017:1522:40
7:18
+0:03
Half
13.11 mi12:02:411:35:067:155:05
7:27
+0:09
25K
15.53 mi12:21:041:53:297:1818:23
7:35
+0:08
30K
18.64 mi12:47:412:20:067:3126:37
8:34
+0:59
20M
20.00 mi12:59:302:31:557:3611:49
8:42
+0:08
21M
21.00 mi13:08:412:41:067:409:11
9:11
+0:29
35K
21.75 mi13:15:462:48:117:447:05
9:28
+0:17
23M
23.00 mi13:27:102:59:357:4811:24
9:06
-0:22
24M
24.00 mi13:36:123:08:377:529:02
9:02
-0:04
40K
24.85 mi13:43:573:16:227:547:45
9:04
+0:02
25.2M
25.20 mi13:47:173:19:427:553:20
9:40
+0:36
Finish
26.22 mi13:56:263:28:517:589:09
8:59
-0:41

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

7:09 /mi

Average Pace

7:58 /mi

Slowest Pace

9:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:53:29

54% of race

Time at Steady Pace

1:15:46

36% of race

Time at Slower Pace

19:36

9% of race

Average Pace: 7:58 /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 mi10:50:1322:387:1722:38
7:17
#8025
10K
6.21 mi11:12:2644:517:1322:13
7:09
#7881
15K
9.32 mi11:34:561:07:217:1422:30
7:15
#7946
20K
12.43 mi11:57:361:30:017:1522:40
7:18
#7859
Half
13.11 mi12:02:411:35:067:155:05
7:27
#7938
25K
15.53 mi12:21:041:53:297:1818:23
7:35
#8108
30K
18.64 mi12:47:412:20:067:3126:37
8:34
#9276
20M
20.00 mi12:59:302:31:557:3611:49
8:42
#9706
21M
21.00 mi13:08:412:41:067:409:11
9:11
#9989
35K
21.75 mi13:15:462:48:117:447:05
9:28
#10449
23M
23.00 mi13:27:102:59:357:4811:24
9:06
#10859
24M
24.00 mi13:36:123:08:377:529:02
9:02
#11234
40K
24.85 mi13:43:573:16:227:547:45
9:04
#11488
25.2M
25.20 mi13:47:173:19:427:553:20
9:40
#11569
Finish
26.22 mi13:56:263:28:517:589:09
8:59
#11914
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi8025699869988102(Top 30%)6989(Top 46%)6989(Top 310%)
10K6.21 mi3.10 mi7881+1446899+996899+997778(Top 29%)6795(Top 45%)6795(Top 302%)
15K9.32 mi3.11 mi7946-656921-226921-228102(Top 30%)6989(Top 46%)6989(Top 310%)
20K12.43 mi3.11 mi7859+876850+716850+717758(Top 29%)6733(Top 44%)6733(Top 299%)
Half13.11 mi0.68 mi7938-796893-436893-439820(Top 37%)8013(Top 53%)8013(Top 356%)
25K15.53 mi2.42 mi8108-1706978-856978-859401(Top 35%)7667(Top 51%)7667(Top 340%)
30K18.64 mi3.11 mi9276-11687671-6937671-69314712(Top 55%)9935(Top 65%)9935(Top 441%)
20M20.00 mi1.36 mi9706-4307898-2277898-22714798(Top 56%)9887(Top 65%)9887(Top 439%)
21M21.00 mi1.00 mi9989-2838033-1358033-13514368(Top 54%)9650(Top 64%)9650(Top 429%)
35K21.75 mi0.75 mi10449-4608243-2108243-21019721(Top 74%)11927(Top 79%)11927(Top 530%)
23M23.00 mi1.25 mi10859-4108415-1728415-17216538(Top 62%)10467(Top 69%)10467(Top 465%)
24M24.00 mi1.00 mi11234-3758575-1608575-16017361(Top 65%)10781(Top 71%)10781(Top 479%)
40K24.85 mi0.85 mi11488-2548665-908665-9016449(Top 62%)10318(Top 68%)10318(Top 458%)
25.2M25.20 mi0.35 mi11569-818697-328697-3215888(Top 60%)10052(Top 66%)10052(Top 446%)
Finish26.22 mi1.02 mi11914-3458822-1258822-12517838(Top 67%)10980(Top 72%)10980(Top 488%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 30%
×21stories
+97ft-345ft

Overall

8102

Males

6989

M45-49

6989

5K→10K

3.1 - 6.2 mi

Top 29%
×5stories
+79ft-138ft

Overall

7778

Males

6795

M45-49

6795

10K→15K

6.2 - 9.3 mi

Top 30%
×3stories
+67ft-78ft

Overall

8102

Males

6989

M45-49

6989

15K→20K

9.3 - 12.4 mi

Top 29%
×5stories
+106ft-86ft

Overall

7758

Males

6733

M45-49

6733

20K→Half

12.4 - 13.1 mi

Top 37%
×2stories
+19ft-37ft

Overall

9820

Males

8013

M45-49

8013

Half→25K

13.1 - 15.5 mi

Top 35%
×4stories
+66ft-88ft

Overall

9401

Males

7667

M45-49

7667

25K→30K

15.5 - 18.6 mi

Top 55%
×9stories
+181ft-148ft

Overall

14712

Males

9935

M45-49

9935

30K→20M

18.6 - 20.0 mi

Top 56%
×5stories
+64ft-50ft

Overall

14798

Males

9887

M45-49

9887

20M→21M

20.0 - 21.0 mi

Top 54%
×8stories
+106ft-24ft

Overall

14368

Males

9650

M45-49

9650

21M→35K

21.0 - 21.8 mi

Top 74%
×7stories
+17ft-86ft

Overall

19721

Males

11927

M45-49

11927

35K→23M

21.8 - 23.0 mi

Top 62%
×5stories
+23ft-63ft

Overall

16538

Males

10467

M45-49

10467

23M→24M

23.0 - 24.0 mi

Top 65%
×6stories
+12ft-82ft

Overall

17361

Males

10781

M45-49

10781

24M→40K

24.0 - 24.9 mi

Top 62%
×1story
+6ft-20ft

Overall

16449

Males

10318

M45-49

10318

40K→25.2M

24.9 - 25.2 mi

Top 60%
×1story
+13ft-16ft

Overall

15888

Males

10052

M45-49

10052

25.2M→Finish

25.2 - 26.2 mi

Top 67%
×2stories
+22ft-21ft

Overall

17838

Males

10980

M45-49

10980

Passing Analysis

Category:
Athletes Passed
786
Passed By
4672
Net Change
-3889
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8025
5K → 10K307163+144#8025#7881
10K → 15K119184-65#7881#7946
15K → 20K15568+87#7946#7859
20K → Half685-79#7859#7938
Half → 25K52222-170#7938#8108
25K → 30K211189-1168#8108#9276
30K → 20M21451-430#9276#9706
20M → 21M19301-283#9706#9989
21M → 35K8466-460#9989#10449
35K → 23M14424-410#10449#10859
23M → 24M18393-375#10859#11234
24M → 40K16270-254#11234#11488
40K → 25.2M1596-81#11488#11569
25.2M → Finish15360-345#11569#11914
TOTALS7864672-3889
📊

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