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BOSTON MARATHON 2023

Sam Welch

Bib: 6287•M

NY

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 9%
Gender (Male)
#0 / 15176
Top 15%
Division (M18-39)
#0 / 5285
Top 34%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:29
Rank: #5656
Start → 5K
21:29 | 6:55/mi
10K· 6.21 mi
42:04
Rank: #4683 (+973)
5K → 10K
20:35 | 6:38/mi
15K· 9.32 mi
1:02:19
Rank: #3863 (+820)
10K → 15K
20:15 | 6:31/mi
20K· 12.43 mi
1:22:26
Rank: #3326 (+537)
15K → 20K
20:07 | 6:28/mi
Half· 13.11 mi
1:26:48
Rank: #3239 (+87)
20K → Half
4:22 | 6:24/mi
25K· 15.53 mi
1:42:33
Rank: #3009 (+230)
Half → 25K
15:45 | 6:30/mi
30K· 18.64 mi
2:03:24
Rank: #2851 (+158)
25K → 30K
20:51 | 6:43/mi
20M
2:12:37
Rank: #2818 (+33)
30K → 20M
9:13 | 6:47/mi
21M
2:19:27
Rank: #2679 (+139)
20M → 21M
6:50 | 6:50/mi
35K· 21.75 mi
2:24:14
Rank: #2632 (+47)
21M → 35K
4:47 | 6:24/mi
23M
2:32:36
Rank: #2554 (+78)
35K → 23M
8:22 | 6:41/mi
24M
2:39:08
Rank: #2510 (+44)
23M → 24M
6:32 | 6:32/mi
40K· 24.85 mi
2:44:52
Rank: #2490 (+20)
24M → 40K
5:44 | 6:42/mi
25.2M
2:47:17
Rank: #2460 (+30)
40K → 25.2M
2:25 | 7:00/mi
Finish· 26.22 mi
2:53:42
Rank: #2406 (+54)
25.2M → Finish
6:25 | 6:18/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:26:48
Pace6:37 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:26:54
Pace6:38 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:24:5421:296:5521:29
6:55
-
10K
6.21 mi10:45:2942:046:4620:35
6:38
-0:17
15K
9.32 mi11:05:441:02:196:4120:15
6:31
-0:07
20K
12.43 mi11:25:511:22:266:3820:07
6:28
-0:03
Half
13.11 mi11:30:131:26:486:374:22
6:24
-0:04
25K
15.53 mi11:45:581:42:336:3615:45
6:30
+0:06
30K
18.64 mi12:06:492:03:246:3720:51
6:43
+0:13
20M
20.00 mi12:16:022:12:376:389:13
6:47
+0:04
21M
21.00 mi12:22:522:19:276:386:50
6:50
+0:03
35K
21.75 mi12:27:392:24:146:384:47
6:24
-0:26
23M
23.00 mi12:36:012:32:366:388:22
6:41
+0:17
24M
24.00 mi12:42:332:39:086:386:32
6:32
-0:09
40K
24.85 mi12:48:172:44:526:385:44
6:42
+0:10
25.2M
25.20 mi12:50:422:47:176:382:25
7:00
+0:18
Finish
26.22 mi12:57:072:53:426:386:25
6:18
-0:42

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

6:18 /mi

Average Pace

6:38 /mi

Slowest Pace

7:00 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:51:17

99% of race

Time at Steady Pace

2:25

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:37 /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 mi10:24:5421:296:5521:29
6:55
#5656
10K
6.21 mi10:45:2942:046:4620:35
6:38
#4683
15K
9.32 mi11:05:441:02:196:4120:15
6:31
#3863
20K
12.43 mi11:25:511:22:266:3820:07
6:28
#3326
Half
13.11 mi11:30:131:26:486:374:22
6:24
#3239
25K
15.53 mi11:45:581:42:336:3615:45
6:30
#3009
30K
18.64 mi12:06:492:03:246:3720:51
6:43
#2851
20M
20.00 mi12:16:022:12:376:389:13
6:47
#2818
21M
21.00 mi12:22:522:19:276:386:50
6:50
#2679
35K
21.75 mi12:27:392:24:146:384:47
6:24
#2632
23M
23.00 mi12:36:012:32:366:388:22
6:41
#2554
24M
24.00 mi12:42:332:39:086:386:32
6:32
#2510
40K
24.85 mi12:48:172:44:526:385:44
6:42
#2490
25.2M
25.20 mi12:50:422:47:176:382:25
7:00
#2460
Finish
26.22 mi12:57:072:53:426:386:25
6:18
#2406
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi5656520052002735(Top 10%)2612(Top 17%)2612(Top 49%)
10K6.21 mi3.10 mi4683+9734365+8354365+8353659(Top 14%)3455(Top 23%)3455(Top 65%)
15K9.32 mi3.11 mi3863+8203640+7253640+7252735(Top 10%)2612(Top 17%)2612(Top 49%)
20K12.43 mi3.11 mi3326+5373161+4793161+4792163(Top 8%)2075(Top 14%)2075(Top 39%)
Half13.11 mi0.68 mi3239+873081+803081+802236(Top 8%)2146(Top 14%)2146(Top 41%)
25K15.53 mi2.42 mi3009+2302873+2082873+2082153(Top 8%)2066(Top 14%)2066(Top 39%)
30K18.64 mi3.11 mi2851+1582726+1472726+1472452(Top 9%)2334(Top 15%)2334(Top 44%)
20M20.00 mi1.36 mi2818+332694+322694+322686(Top 10%)2540(Top 17%)2540(Top 48%)
21M21.00 mi1.00 mi2679+1392560+1342560+1341535(Top 6%)1464(Top 10%)1464(Top 28%)
35K21.75 mi0.75 mi2632+472515+452515+451964(Top 7%)1868(Top 12%)1868(Top 35%)
23M23.00 mi1.25 mi2554+782442+732442+732102(Top 8%)1991(Top 13%)1991(Top 38%)
24M24.00 mi1.00 mi2510+442400+422400+422228(Top 8%)2086(Top 14%)2086(Top 39%)
40K24.85 mi0.85 mi2490+202379+212379+212362(Top 9%)2192(Top 14%)2192(Top 41%)
25.2M25.20 mi0.35 mi2460+302349+302349+301768(Top 7%)1661(Top 11%)1661(Top 31%)
Finish26.22 mi1.02 mi2406+542297+522297+521628(Top 6%)1533(Top 10%)1533(Top 29%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 10%
×21stories
+97ft-345ft

Overall

2735

Males

2612

M18-39

2612

5K→10K

3.1 - 6.2 mi

Top 14%
×5stories
+79ft-138ft

Overall

3659

Males

3455

M18-39

3455

10K→15K

6.2 - 9.3 mi

Top 10%
×3stories
+67ft-78ft

Overall

2735

Males

2612

M18-39

2612

15K→20K

9.3 - 12.4 mi

Top 8%
×5stories
+106ft-86ft

Overall

2163

Males

2075

M18-39

2075

20K→Half

12.4 - 13.1 mi

Top 8%
×2stories
+19ft-37ft

Overall

2236

Males

2146

M18-39

2146

Half→25K

13.1 - 15.5 mi

Top 8%
×4stories
+66ft-88ft

Overall

2153

Males

2066

M18-39

2066

25K→30K

15.5 - 18.6 mi

Top 9%
×9stories
+181ft-148ft

Overall

2452

Males

2334

M18-39

2334

30K→20M

18.6 - 20.0 mi

Top 10%
×5stories
+64ft-50ft

Overall

2686

Males

2540

M18-39

2540

20M→21M

20.0 - 21.0 mi

Top 6%
×8stories
+106ft-24ft

Overall

1535

Males

1464

M18-39

1464

21M→35K

21.0 - 21.8 mi

Top 7%
×7stories
+17ft-86ft

Overall

1964

Males

1868

M18-39

1868

35K→23M

21.8 - 23.0 mi

Top 8%
×5stories
+23ft-63ft

Overall

2102

Males

1991

M18-39

1991

23M→24M

23.0 - 24.0 mi

Top 8%
×6stories
+12ft-82ft

Overall

2228

Males

2086

M18-39

2086

24M→40K

24.0 - 24.9 mi

Top 9%
×1story
+6ft-20ft

Overall

2362

Males

2192

M18-39

2192

40K→25.2M

24.9 - 25.2 mi

Top 7%
×1story
+13ft-16ft

Overall

1768

Males

1661

M18-39

1661

25.2M→Finish

25.2 - 26.2 mi

Top 6%
×2stories
+22ft-21ft

Overall

1628

Males

1533

M18-39

1533

Passing Analysis

Category:
Athletes Passed
3380
Passed By
130
Net Change
+3250
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5656
5K → 10K98512+973#5656#4683
10K → 15K8233+820#4683#3863
15K → 20K5381+537#3863#3326
20K → Half881+87#3326#3239
Half → 25K2311+230#3239#3009
25K → 30K17517+158#3009#2851
30K → 20M5219+33#2851#2818
20M → 21M1423+139#2818#2679
21M → 35K503+47#2679#2632
35K → 23M9517+78#2632#2554
23M → 24M517+44#2554#2510
24M → 40K4424+20#2510#2490
40K → 25.2M322+30#2490#2460
25.2M → Finish7420+54#2460#2406
TOTALS3380130+3250
📊

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