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BOSTON MARATHON 2023

Bradley Klapper

Bib: 1688•M

DC

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
18:52
Rank: #825
Start → 5K
18:52 | 6:04/mi
10K· 6.21 mi
37:21
Rank: #758 (+67)
5K → 10K
18:29 | 5:57/mi
15K· 9.32 mi
55:55
Rank: #723 (+35)
10K → 15K
18:34 | 5:59/mi
20K· 12.43 mi
1:14:43
Rank: #687 (+36)
15K → 20K
18:48 | 6:03/mi
Half· 13.11 mi
1:18:48
Rank: #686 (+1)
20K → Half
4:05 | 5:59/mi
25K· 15.53 mi
1:33:31
Rank: #686
Half → 25K
14:43 | 6:04/mi
30K· 18.64 mi
1:52:33
Rank: #647 (+39)
25K → 30K
19:02 | 6:08/mi
20M
2:00:53
Rank: #630 (+17)
30K → 20M
8:20 | 6:08/mi
21M
2:07:26
Rank: #629 (+1)
20M → 21M
6:33 | 6:33/mi
35K· 21.75 mi
2:11:56
Rank: #630 (-1)
21M → 35K
4:30 | 6:01/mi
23M
2:19:59
Rank: #632 (-2)
35K → 23M
8:03 | 6:26/mi
24M
2:26:39
Rank: #682 (-50)
23M → 24M
6:40 | 6:40/mi
40K· 24.85 mi
2:33:09
Rank: #757 (-75)
24M → 40K
6:30 | 7:36/mi
25.2M
2:36:16
Rank: #822 (-65)
40K → 25.2M
3:07 | 9:02/mi
Finish· 26.22 mi
2:43:41
Rank: #926 (-104)
25.2M → Finish
7:25 | 7:17/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:18:48
Pace6:01 /mi
2nd Half
Distance13.11 mi
Time1:24:53
Pace6:29 /mi
📊Positive Split: 7.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:19:1318:526:0418:52
6:04
-
10K
6.21 mi10:37:4237:216:0118:29
5:57
-0:07
15K
9.32 mi10:56:1655:556:0018:34
5:59
+0:02
20K
12.43 mi11:15:041:14:436:0118:48
6:03
+0:04
Half
13.11 mi11:19:091:18:486:014:05
5:59
-0:04
25K
15.53 mi11:33:521:33:316:0114:43
6:04
+0:05
30K
18.64 mi11:52:541:52:336:0219:02
6:08
+0:04
20M
20.00 mi12:01:142:00:536:038:20
6:08
0:00
21M
21.00 mi12:07:472:07:266:046:33
6:33
+0:25
35K
21.75 mi12:12:172:11:566:044:30
6:01
-0:32
23M
23.00 mi12:20:202:19:596:058:03
6:26
+0:25
24M
24.00 mi12:27:002:26:396:076:40
6:40
+0:14
40K
24.85 mi12:33:302:33:096:106:30
7:36
+0:56
25.2M
25.20 mi12:36:372:36:166:123:07
9:02
+1:26
Finish
26.22 mi12:44:022:43:416:157:25
7:17
-1:45

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

5:57 /mi

Average Pace

6:15 /mi

Slowest Pace

9:02 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

2:13:26

82% of race

Time at Slower Pace

30:15

18% of race

Average Pace: 6:15 /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 mi10:19:1318:526:0418:52
6:04
#825
10K
6.21 mi10:37:4237:216:0118:29
5:57
#758
15K
9.32 mi10:56:1655:556:0018:34
5:59
#723
20K
12.43 mi11:15:041:14:436:0118:48
6:03
#687
Half
13.11 mi11:19:091:18:486:014:05
5:59
#686
25K
15.53 mi11:33:521:33:316:0114:43
6:04
#686
30K
18.64 mi11:52:541:52:336:0219:02
6:08
#647
20M
20.00 mi12:01:142:00:536:038:20
6:08
#630
21M
21.00 mi12:07:472:07:266:046:33
6:33
#629
35K
21.75 mi12:12:172:11:566:044:30
6:01
#630
23M
23.00 mi12:20:202:19:596:058:03
6:26
#632
24M
24.00 mi12:27:002:26:396:076:40
6:40
#682
40K
24.85 mi12:33:302:33:096:106:30
7:36
#757
25.2M
25.20 mi12:36:372:36:166:123:07
9:02
#822
Finish
26.22 mi12:44:022:43:416:157:25
7:17
#926
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi825776776658(Top 2%)615(Top 4%)615(Top 27%)
10K6.21 mi3.10 mi758+67714+62714+62694(Top 3%)650(Top 4%)650(Top 29%)
15K9.32 mi3.11 mi723+35679+35679+35658(Top 2%)615(Top 4%)615(Top 27%)
20K12.43 mi3.11 mi687+36644+35644+35660(Top 2%)618(Top 4%)618(Top 28%)
Half13.11 mi0.68 mi686+1643+1643+1733(Top 3%)692(Top 5%)692(Top 31%)
25K15.53 mi2.42 mi686645-2645-2671(Top 3%)630(Top 4%)630(Top 28%)
30K18.64 mi3.11 mi647+39606+39606+39550(Top 2%)516(Top 3%)516(Top 23%)
20M20.00 mi1.36 mi630+17590+16590+16550(Top 2%)516(Top 3%)516(Top 23%)
21M21.00 mi1.00 mi629+1588+2588+2761(Top 3%)719(Top 5%)719(Top 32%)
35K21.75 mi0.75 mi630-1589-1589-1724(Top 3%)684(Top 5%)684(Top 31%)
23M23.00 mi1.25 mi632-2592-3592-31182(Top 4%)1116(Top 7%)1116(Top 50%)
24M24.00 mi1.00 mi682-50641-49641-492881(Top 11%)2673(Top 18%)2673(Top 119%)
40K24.85 mi0.85 mi757-75715-74715-747278(Top 27%)5777(Top 38%)5777(Top 258%)
25.2M25.20 mi0.35 mi822-65778-63778-6312621(Top 47%)8534(Top 56%)8534(Top 381%)
Finish26.22 mi1.02 mi926-104879-101879-1016907(Top 26%)5490(Top 36%)5490(Top 245%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 2%
×21stories
+97ft-345ft

Overall

658

Males

615

M40-44

615

5K→10K

3.1 - 6.2 mi

Top 3%
×5stories
+79ft-138ft

Overall

694

Males

650

M40-44

650

10K→15K

6.2 - 9.3 mi

Top 2%
×3stories
+67ft-78ft

Overall

658

Males

615

M40-44

615

15K→20K

9.3 - 12.4 mi

Top 2%
×5stories
+106ft-86ft

Overall

660

Males

618

M40-44

618

20K→Half

12.4 - 13.1 mi

Top 3%
×2stories
+19ft-37ft

Overall

733

Males

692

M40-44

692

Half→25K

13.1 - 15.5 mi

Top 3%
×4stories
+66ft-88ft

Overall

671

Males

630

M40-44

630

25K→30K

15.5 - 18.6 mi

Top 2%
×9stories
+181ft-148ft

Overall

550

Males

516

M40-44

516

30K→20M

18.6 - 20.0 mi

Top 2%
×5stories
+64ft-50ft

Overall

550

Males

516

M40-44

516

20M→21M

20.0 - 21.0 mi

Top 3%
×8stories
+106ft-24ft

Overall

761

Males

719

M40-44

719

21M→35K

21.0 - 21.8 mi

Top 3%
×7stories
+17ft-86ft

Overall

724

Males

684

M40-44

684

35K→23M

21.8 - 23.0 mi

Top 4%
×5stories
+23ft-63ft

Overall

1182

Males

1116

M40-44

1116

23M→24M

23.0 - 24.0 mi

Top 11%
×6stories
+12ft-82ft

Overall

2881

Males

2673

M40-44

2673

24M→40K

24.0 - 24.9 mi

Top 27%
×1story
+6ft-20ft

Overall

7278

Males

5777

M40-44

5777

40K→25.2M

24.9 - 25.2 mi

Top 47%
×1story
+13ft-16ft

Overall

12621

Males

8534

M40-44

8534

25.2M→Finish

25.2 - 26.2 mi

Top 26%
×2stories
+22ft-21ft

Overall

6907

Males

5490

M40-44

5490

Passing Analysis

Category:
Athletes Passed
288
Passed By
389
Net Change
-101
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#825
5K → 10K7912+67#825#758
10K → 15K449+35#758#723
15K → 20K393+36#723#687
20K → Half21+1#687#686
Half → 25K18180#686#686
25K → 30K4910+39#686#647
30K → 20M214+17#647#630
20M → 21M1110+1#630#629
21M → 35K78-1#629#630
35K → 23M1315-2#630#632
23M → 24M252-50#632#682
24M → 40K176-75#682#757
40K → 25.2M065-65#757#822
25.2M → Finish2106-104#822#926
TOTALS288389-101
📊

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