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BOSTON MARATHON 2023

Caleb Chambers

Bib: 2364•M

IN

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

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:41
Rank: #15915
Start → 5K
25:41 | 8:16/mi
10K· 6.21 mi
50:55
Rank: #15772 (+143)
5K → 10K
25:14 | 8:07/mi
15K· 9.32 mi
1:15:50
Rank: #15385 (+387)
10K → 15K
24:55 | 8:01/mi
20K· 12.43 mi
1:41:14
Rank: #15221 (+164)
15K → 20K
25:24 | 8:11/mi
Half· 13.11 mi
1:46:48
Rank: #15224 (-3)
20K → Half
5:34 | 8:10/mi
25K· 15.53 mi
2:06:40
Rank: #15019 (+205)
Half → 25K
19:52 | 8:12/mi
30K· 18.64 mi
2:32:58
Rank: #14862 (+157)
25K → 30K
26:18 | 8:28/mi
20M
2:44:32
Rank: #14746 (+116)
30K → 20M
11:34 | 8:31/mi
21M
2:53:27
Rank: #14619 (+127)
20M → 21M
8:55 | 8:55/mi
35K· 21.75 mi
2:59:51
Rank: #14639 (-20)
21M → 35K
6:24 | 8:33/mi
23M
3:11:01
Rank: #14705 (-66)
35K → 23M
11:10 | 8:55/mi
24M
3:19:58
Rank: #14783 (-78)
23M → 24M
8:57 | 8:57/mi
40K· 24.85 mi
3:27:36
Rank: #14796 (-13)
24M → 40K
7:38 | 8:56/mi
25.2M
3:30:52
Rank: #14786 (+10)
40K → 25.2M
3:16 | 9:28/mi
Finish· 26.22 mi
3:39:23
Rank: #14775 (+11)
25.2M → Finish
8:31 | 8:21/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:46:48
Pace8:09 /mi
2nd Half
Distance13.11 mi
Time1:52:35
Pace8:35 /mi
📊Positive Split: 5.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:5125:418:1625:41
8:16
-
10K
6.21 mi11:45:0550:558:1225:14
8:07
-0:09
15K
9.32 mi12:10:001:15:508:0824:55
8:01
-0:06
20K
12.43 mi12:35:241:41:148:0925:24
8:11
+0:10
Half
13.11 mi12:40:581:46:488:095:34
8:10
-0:01
25K
15.53 mi13:00:502:06:408:0919:52
8:12
+0:02
30K
18.64 mi13:27:082:32:588:1226:18
8:28
+0:16
20M
20.00 mi13:38:422:44:328:1411:34
8:31
+0:03
21M
21.00 mi13:47:372:53:278:168:55
8:55
+0:24
35K
21.75 mi13:54:012:59:518:166:24
8:33
-0:22
23M
23.00 mi14:05:113:11:018:1811:10
8:55
+0:22
24M
24.00 mi14:14:083:19:588:208:57
8:57
+0:02
40K
24.85 mi14:21:463:27:368:217:38
8:56
-0:01
25.2M
25.20 mi14:25:023:30:528:223:16
9:28
+0:32
Finish
26.22 mi14:33:333:39:238:228:31
8:21
-1:07

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

8:01 /mi

Average Pace

8:22 /mi

Slowest Pace

9:28 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:59:27

82% of race

Time at Steady Pace

36:40

17% of race

Time at Slower Pace

3:16

1% of race

Average Pace: 8:22 /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 mi11:19:5125:418:1625:41
8:16
#15915
10K
6.21 mi11:45:0550:558:1225:14
8:07
#15772
15K
9.32 mi12:10:001:15:508:0824:55
8:01
#15385
20K
12.43 mi12:35:241:41:148:0925:24
8:11
#15221
Half
13.11 mi12:40:581:46:488:095:34
8:10
#15224
25K
15.53 mi13:00:502:06:408:0919:52
8:12
#15019
30K
18.64 mi13:27:082:32:588:1226:18
8:28
#14862
20M
20.00 mi13:38:422:44:328:1411:34
8:31
#14746
21M
21.00 mi13:47:372:53:278:168:55
8:55
#14619
35K
21.75 mi13:54:012:59:518:166:24
8:33
#14639
23M
23.00 mi14:05:113:11:018:1811:10
8:55
#14705
24M
24.00 mi14:14:083:19:588:208:57
8:57
#14783
40K
24.85 mi14:21:463:27:368:217:38
8:56
#14796
25.2M
25.20 mi14:25:023:30:528:223:16
9:28
#14786
Finish
26.22 mi14:33:333:39:238:228:31
8:21
#14775
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi15915106701067014530(Top 55%)10111(Top 67%)10111(Top 451%)
10K6.21 mi3.10 mi15772+14310611+5910611+5915662(Top 59%)10582(Top 70%)10582(Top 472%)
15K9.32 mi3.11 mi15385+38710460+15110460+15114530(Top 55%)10111(Top 67%)10111(Top 451%)
20K12.43 mi3.11 mi15221+16410380+8010380+8014781(Top 56%)10191(Top 67%)10191(Top 455%)
Half13.11 mi0.68 mi15224-310379+110379+115449(Top 58%)10466(Top 69%)10466(Top 467%)
25K15.53 mi2.42 mi15019+20510277+10210277+10214169(Top 53%)9832(Top 65%)9832(Top 439%)
30K18.64 mi3.11 mi14862+15710189+8810189+8814075(Top 53%)9683(Top 64%)9683(Top 432%)
20M20.00 mi1.36 mi14746+11610122+6710122+6713695(Top 51%)9447(Top 62%)9447(Top 422%)
21M21.00 mi1.00 mi14619+12710041+8110041+8112922(Top 49%)9002(Top 59%)9002(Top 402%)
35K21.75 mi0.75 mi14639-2010033+810033+815572(Top 58%)10100(Top 67%)10100(Top 451%)
23M23.00 mi1.25 mi14705-6610031+210031+215616(Top 59%)10074(Top 66%)10074(Top 450%)
24M24.00 mi1.00 mi14783-7810038-710038-716976(Top 64%)10612(Top 70%)10612(Top 474%)
40K24.85 mi0.85 mi14796-1310018+2010018+2015728(Top 59%)10013(Top 66%)10013(Top 447%)
25.2M25.20 mi0.35 mi14786+1010002+1610002+1615003(Top 56%)9679(Top 64%)9679(Top 432%)
Finish26.22 mi1.02 mi14775+119981+219981+2114431(Top 54%)9451(Top 62%)9451(Top 422%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 55%
×21stories
+97ft-345ft

Overall

14530

Males

10111

M40-44

10111

5K→10K

3.1 - 6.2 mi

Top 59%
×5stories
+79ft-138ft

Overall

15662

Males

10582

M40-44

10582

10K→15K

6.2 - 9.3 mi

Top 55%
×3stories
+67ft-78ft

Overall

14530

Males

10111

M40-44

10111

15K→20K

9.3 - 12.4 mi

Top 56%
×5stories
+106ft-86ft

Overall

14781

Males

10191

M40-44

10191

20K→Half

12.4 - 13.1 mi

Top 58%
×2stories
+19ft-37ft

Overall

15449

Males

10466

M40-44

10466

Half→25K

13.1 - 15.5 mi

Top 53%
×4stories
+66ft-88ft

Overall

14169

Males

9832

M40-44

9832

25K→30K

15.5 - 18.6 mi

Top 53%
×9stories
+181ft-148ft

Overall

14075

Males

9683

M40-44

9683

30K→20M

18.6 - 20.0 mi

Top 51%
×5stories
+64ft-50ft

Overall

13695

Males

9447

M40-44

9447

20M→21M

20.0 - 21.0 mi

Top 49%
×8stories
+106ft-24ft

Overall

12922

Males

9002

M40-44

9002

21M→35K

21.0 - 21.8 mi

Top 58%
×7stories
+17ft-86ft

Overall

15572

Males

10100

M40-44

10100

35K→23M

21.8 - 23.0 mi

Top 59%
×5stories
+23ft-63ft

Overall

15616

Males

10074

M40-44

10074

23M→24M

23.0 - 24.0 mi

Top 64%
×6stories
+12ft-82ft

Overall

16976

Males

10612

M40-44

10612

24M→40K

24.0 - 24.9 mi

Top 59%
×1story
+6ft-20ft

Overall

15728

Males

10013

M40-44

10013

40K→25.2M

24.9 - 25.2 mi

Top 56%
×1story
+13ft-16ft

Overall

15003

Males

9679

M40-44

9679

25.2M→Finish

25.2 - 26.2 mi

Top 54%
×2stories
+22ft-21ft

Overall

14431

Males

9451

M40-44

9451

Passing Analysis

Category:
Athletes Passed
2187
Passed By
1047
Net Change
+1140
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15915
5K → 10K368225+143#15915#15772
10K → 15K44154+387#15772#15385
15K → 20K25389+164#15385#15221
20K → Half3134-3#15221#15224
Half → 25K24641+205#15224#15019
25K → 30K25598+157#15019#14862
30K → 20M14630+116#14862#14746
20M → 21M15427+127#14746#14619
21M → 35K3656-20#14619#14639
35K → 23M53119-66#14639#14705
23M → 24M49127-78#14705#14783
24M → 40K5871-13#14783#14796
40K → 25.2M3121+10#14796#14786
25.2M → Finish6655+11#14786#14775
TOTALS21871047+1140
📊

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