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BOSTON MARATHON 2023

Matthew Kaler

Bib: 3334•M

MD

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 11%
Gender (Male)
#0 / 15176
Top 18%
Division (M18-39)
#0 / 5285
Top 40%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:06
Rank: #4579
Start → 5K
21:06 | 6:47/mi
10K· 6.21 mi
41:45
Rank: #4173 (+406)
5K → 10K
20:39 | 6:39/mi
15K· 9.32 mi
1:03:20
Rank: #4949 (-776)
10K → 15K
21:35 | 6:57/mi
20K· 12.43 mi
1:25:00
Rank: #5226 (-277)
15K → 20K
21:40 | 6:58/mi
Half· 13.11 mi
1:29:36
Rank: #5199 (+27)
20K → Half
4:36 | 6:45/mi
25K· 15.53 mi
1:46:09
Rank: #5022 (+177)
Half → 25K
16:33 | 6:50/mi
30K· 18.64 mi
2:07:46
Rank: #4786 (+236)
25K → 30K
21:37 | 6:57/mi
20M
2:17:11
Rank: #4664 (+122)
30K → 20M
9:25 | 6:56/mi
21M
2:24:12
Rank: #4458 (+206)
20M → 21M
7:01 | 7:01/mi
35K· 21.75 mi
2:28:53
Rank: #4261 (+197)
21M → 35K
4:41 | 6:16/mi
23M
2:36:45
Rank: #3885 (+376)
35K → 23M
7:52 | 6:17/mi
24M
2:42:41
Rank: #3539 (+346)
23M → 24M
5:56 | 5:56/mi
40K· 24.85 mi
2:47:50
Rank: #3286 (+253)
24M → 40K
5:09 | 6:01/mi
25.2M
2:50:04
Rank: #3182 (+104)
40K → 25.2M
2:14 | 6:29/mi
Finish· 26.22 mi
2:56:05
Rank: #2942 (+240)
25.2M → Finish
6:01 | 5:54/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:29:36
Pace6:50 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:26:29
Pace6:36 /mi
📊Negative Split: 3.5% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:2521:066:4721:06
6:47
-
10K
6.21 mi10:43:0441:456:4320:39
6:39
-0:08
15K
9.32 mi11:04:391:03:206:4821:35
6:57
+0:18
20K
12.43 mi11:26:191:25:006:5021:40
6:58
+0:01
Half
13.11 mi11:30:551:29:366:504:36
6:45
-0:13
25K
15.53 mi11:47:281:46:096:5016:33
6:50
+0:05
30K
18.64 mi12:09:052:07:466:5121:37
6:57
+0:07
20M
20.00 mi12:18:302:17:116:529:25
6:56
-0:01
21M
21.00 mi12:25:312:24:126:527:01
7:01
+0:05
35K
21.75 mi12:30:122:28:536:514:41
6:16
-0:45
23M
23.00 mi12:38:042:36:456:497:52
6:17
+0:01
24M
24.00 mi12:44:002:42:416:475:56
5:56
-0:21
40K
24.85 mi12:49:092:47:506:455:09
6:01
+0:05
25.2M
25.20 mi12:51:232:50:046:452:14
6:29
+0:28
Finish
26.22 mi12:57:242:56:056:436:01
5:54
-0:35

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

5:54 /mi

Average Pace

6:43 /mi

Slowest Pace

7:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

31:53

18% of race

Time at Steady Pace

1:55:31

66% of race

Time at Slower Pace

28:41

16% of race

Average Pace: 6:43 /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 mi10:22:2521:066:4721:06
6:47
#4579
10K
6.21 mi10:43:0441:456:4320:39
6:39
#4173
15K
9.32 mi11:04:391:03:206:4821:35
6:57
#4949
20K
12.43 mi11:26:191:25:006:5021:40
6:58
#5226
Half
13.11 mi11:30:551:29:366:504:36
6:45
#5199
25K
15.53 mi11:47:281:46:096:5016:33
6:50
#5022
30K
18.64 mi12:09:052:07:466:5121:37
6:57
#4786
20M
20.00 mi12:18:302:17:116:529:25
6:56
#4664
21M
21.00 mi12:25:312:24:126:527:01
7:01
#4458
35K
21.75 mi12:30:122:28:536:514:41
6:16
#4261
23M
23.00 mi12:38:042:36:456:497:52
6:17
#3885
24M
24.00 mi12:44:002:42:416:475:56
5:56
#3539
40K
24.85 mi12:49:092:47:506:455:09
6:01
#3286
25.2M
25.20 mi12:51:232:50:046:452:14
6:29
#3182
Finish
26.22 mi12:57:242:56:056:436:01
5:54
#2942
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi4579426742676234(Top 23%)5644(Top 37%)5644(Top 107%)
10K6.21 mi3.10 mi4173+4063911+3563911+3563851(Top 14%)3628(Top 24%)3628(Top 69%)
15K9.32 mi3.11 mi4949-7764596-6854596-6856234(Top 23%)5644(Top 37%)5644(Top 107%)
20K12.43 mi3.11 mi5226-2774844-2484844-2485804(Top 22%)5313(Top 35%)5313(Top 101%)
Half13.11 mi0.68 mi5199+274820+244820+244648(Top 17%)4310(Top 28%)4310(Top 82%)
25K15.53 mi2.42 mi5022+1774661+1594661+1594353(Top 16%)4057(Top 27%)4057(Top 77%)
30K18.64 mi3.11 mi4786+2364452+2094452+2094051(Top 15%)3781(Top 25%)3781(Top 72%)
20M20.00 mi1.36 mi4664+1224349+1034349+1033570(Top 13%)3329(Top 22%)3329(Top 63%)
21M21.00 mi1.00 mi4458+2064160+1894160+1892220(Top 8%)2098(Top 14%)2098(Top 40%)
35K21.75 mi0.75 mi4261+1973986+1743986+1741472(Top 6%)1398(Top 9%)1398(Top 26%)
23M23.00 mi1.25 mi3885+3763655+3313655+331804(Top 3%)763(Top 5%)763(Top 14%)
24M24.00 mi1.00 mi3539+3463344+3113344+311444(Top 2%)417(Top 3%)417(Top 8%)
40K24.85 mi0.85 mi3286+2533108+2363108+236381(Top 1%)356(Top 2%)356(Top 7%)
25.2M25.20 mi0.35 mi3182+1043012+963012+96492(Top 2%)466(Top 3%)466(Top 9%)
Finish26.22 mi1.02 mi2942+2402786+2262786+226550(Top 2%)524(Top 3%)524(Top 10%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 23%
×21stories
+97ft-345ft

Overall

6234

Males

5644

M18-39

5644

5K→10K

3.1 - 6.2 mi

Top 14%
×5stories
+79ft-138ft

Overall

3851

Males

3628

M18-39

3628

10K→15K

6.2 - 9.3 mi

Top 23%
×3stories
+67ft-78ft

Overall

6234

Males

5644

M18-39

5644

15K→20K

9.3 - 12.4 mi

Top 22%
×5stories
+106ft-86ft

Overall

5804

Males

5313

M18-39

5313

20K→Half

12.4 - 13.1 mi

Top 17%
×2stories
+19ft-37ft

Overall

4648

Males

4310

M18-39

4310

Half→25K

13.1 - 15.5 mi

Top 16%
×4stories
+66ft-88ft

Overall

4353

Males

4057

M18-39

4057

25K→30K

15.5 - 18.6 mi

Top 15%
×9stories
+181ft-148ft

Overall

4051

Males

3781

M18-39

3781

30K→20M

18.6 - 20.0 mi

Top 13%
×5stories
+64ft-50ft

Overall

3570

Males

3329

M18-39

3329

20M→21M

20.0 - 21.0 mi

Top 8%
×8stories
+106ft-24ft

Overall

2220

Males

2098

M18-39

2098

21M→35K

21.0 - 21.8 mi

Top 6%
×7stories
+17ft-86ft

Overall

1472

Males

1398

M18-39

1398

35K→23M

21.8 - 23.0 mi

Top 3%
×5stories
+23ft-63ft

Overall

804

Males

763

M18-39

763

23M→24M

23.0 - 24.0 mi

Top 2%
×6stories
+12ft-82ft

Overall

444

Males

417

M18-39

417

24M→40K

24.0 - 24.9 mi

Top 1%
×1story
+6ft-20ft

Overall

381

Males

356

M18-39

356

40K→25.2M

24.9 - 25.2 mi

Top 2%
×1story
+13ft-16ft

Overall

492

Males

466

M18-39

466

25.2M→Finish

25.2 - 26.2 mi

Top 2%
×2stories
+22ft-21ft

Overall

550

Males

524

M18-39

524

Passing Analysis

Category:
Athletes Passed
2894
Passed By
1257
Net Change
+1637
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4579
5K → 10K47367+406#4579#4173
10K → 15K17793-776#4173#4949
15K → 20K43320-277#4949#5226
20K → Half369+27#5226#5199
Half → 25K19922+177#5199#5022
25K → 30K27135+236#5022#4786
30K → 20M13311+122#4786#4664
20M → 21M2060+206#4664#4458
21M → 35K1970+197#4458#4261
35K → 23M3760+376#4261#3885
23M → 24M3460+346#3885#3539
24M → 40K2530+253#3539#3286
40K → 25.2M1040+104#3286#3182
25.2M → Finish2400+240#3182#2942
TOTALS28941257+1637
📊

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