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BOSTON MARATHON 2023

Cory Welch

Bib: 1690•M

VA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 1%
Gender (Male)
#0 / 15176
Top 2%
Division (M18-39)
#0 / 5285
Top 5%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
18:25
Rank: #576
Start → 5K
18:25 | 5:56/mi
10K· 6.21 mi
36:32
Rank: #518 (+58)
5K → 10K
18:07 | 5:50/mi
15K· 9.32 mi
54:55
Rank: #530 (-12)
10K → 15K
18:23 | 5:55/mi
20K· 12.43 mi
1:13:25
Rank: #507 (+23)
15K → 20K
18:30 | 5:57/mi
Half· 13.11 mi
1:17:26
Rank: #513 (-6)
20K → Half
4:01 | 5:53/mi
25K· 15.53 mi
1:31:46
Rank: #492 (+21)
Half → 25K
14:20 | 5:55/mi
30K· 18.64 mi
1:50:18
Rank: #455 (+37)
25K → 30K
18:32 | 5:58/mi
20M
1:58:29
Rank: #443 (+12)
30K → 20M
8:11 | 6:01/mi
21M
2:04:45
Rank: #432 (+11)
20M → 21M
6:16 | 6:16/mi
35K· 21.75 mi
2:09:00
Rank: #422 (+10)
21M → 35K
4:15 | 5:41/mi
23M
2:16:27
Rank: #400 (+22)
35K → 23M
7:27 | 5:57/mi
24M
2:22:17
Rank: #388 (+12)
23M → 24M
5:50 | 5:50/mi
40K· 24.85 mi
2:27:22
Rank: #371 (+17)
24M → 40K
5:05 | 5:57/mi
25.2M
2:29:33
Rank: #365 (+6)
40K → 25.2M
2:11 | 6:20/mi
Finish· 26.22 mi
2:35:29
Rank: #354 (+11)
25.2M → Finish
5:56 | 5:49/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:17:26
Pace5:54 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:18:03
Pace5:57 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:18:5118:255:5618:25
5:56
-
10K
6.21 mi10:36:5836:325:5318:07
5:50
-0:06
15K
9.32 mi10:55:2154:555:5418:23
5:55
+0:05
20K
12.43 mi11:13:511:13:255:5418:30
5:57
+0:02
Half
13.11 mi11:17:521:17:265:544:01
5:53
-0:04
25K
15.53 mi11:32:121:31:465:5414:20
5:55
+0:02
30K
18.64 mi11:50:441:50:185:5518:32
5:58
+0:03
20M
20.00 mi11:58:551:58:295:558:11
6:01
+0:03
21M
21.00 mi12:05:112:04:455:566:16
6:16
+0:15
35K
21.75 mi12:09:262:09:005:564:15
5:41
-0:35
23M
23.00 mi12:16:532:16:275:567:27
5:57
+0:16
24M
24.00 mi12:22:432:22:175:565:50
5:50
-0:07
40K
24.85 mi12:27:482:27:225:565:05
5:57
+0:07
25.2M
25.20 mi12:29:592:29:335:562:11
6:20
+0:23
Finish
26.22 mi12:35:552:35:295:565:56
5:49
-0:31

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

5:41 /mi

Average Pace

5:56 /mi

Slowest Pace

6:20 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:27:02

95% of race

Time at Steady Pace

8:27

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 5:56 /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 mi10:18:5118:255:5618:25
5:56
#576
10K
6.21 mi10:36:5836:325:5318:07
5:50
#518
15K
9.32 mi10:55:2154:555:5418:23
5:55
#530
20K
12.43 mi11:13:511:13:255:5418:30
5:57
#507
Half
13.11 mi11:17:521:17:265:544:01
5:53
#513
25K
15.53 mi11:32:121:31:465:5414:20
5:55
#492
30K
18.64 mi11:50:441:50:185:5518:32
5:58
#455
20M
20.00 mi11:58:551:58:295:558:11
6:01
#443
21M
21.00 mi12:05:112:04:455:566:16
6:16
#432
35K
21.75 mi12:09:262:09:005:564:15
5:41
#422
23M
23.00 mi12:16:532:16:275:567:27
5:57
#400
24M
24.00 mi12:22:432:22:175:565:50
5:50
#388
40K
24.85 mi12:27:482:27:225:565:05
5:57
#371
25.2M
25.20 mi12:29:592:29:335:562:11
6:20
#365
Finish
26.22 mi12:35:552:35:295:565:56
5:49
#354
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi576533533542(Top 2%)500(Top 3%)500(Top 9%)
10K6.21 mi3.10 mi518+58476+57476+57471(Top 2%)435(Top 3%)435(Top 8%)
15K9.32 mi3.11 mi530-12488-12488-12542(Top 2%)500(Top 3%)500(Top 9%)
20K12.43 mi3.11 mi507+23468+20468+20498(Top 2%)458(Top 3%)458(Top 9%)
Half13.11 mi0.68 mi513-6473-5473-5506(Top 2%)468(Top 3%)468(Top 9%)
25K15.53 mi2.42 mi492+21452+21452+21401(Top 2%)371(Top 2%)371(Top 7%)
30K18.64 mi3.11 mi455+37418+34418+34343(Top 1%)316(Top 2%)316(Top 6%)
20M20.00 mi1.36 mi443+12408+10408+10366(Top 1%)337(Top 2%)337(Top 6%)
21M21.00 mi1.00 mi432+11397+11397+11307(Top 1%)281(Top 2%)281(Top 5%)
35K21.75 mi0.75 mi422+10387+10387+10204(Top 0.8%)181(Top 1%)181(Top 3%)
23M23.00 mi1.25 mi400+22366+21366+21265(Top 1.0%)240(Top 2%)240(Top 5%)
24M24.00 mi1.00 mi388+12355+11355+11296(Top 1%)270(Top 2%)270(Top 5%)
40K24.85 mi0.85 mi371+17339+16339+16272(Top 1%)249(Top 2%)249(Top 5%)
25.2M25.20 mi0.35 mi365+6333+6333+6254(Top 1.0%)234(Top 2%)234(Top 4%)
Finish26.22 mi1.02 mi354+11322+11322+11407(Top 2%)386(Top 3%)386(Top 7%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 2%
×21stories
+97ft-345ft

Overall

542

Males

500

M18-39

500

5K→10K

3.1 - 6.2 mi

Top 2%
×5stories
+79ft-138ft

Overall

471

Males

435

M18-39

435

10K→15K

6.2 - 9.3 mi

Top 2%
×3stories
+67ft-78ft

Overall

542

Males

500

M18-39

500

15K→20K

9.3 - 12.4 mi

Top 2%
×5stories
+106ft-86ft

Overall

498

Males

458

M18-39

458

20K→Half

12.4 - 13.1 mi

Top 2%
×2stories
+19ft-37ft

Overall

506

Males

468

M18-39

468

Half→25K

13.1 - 15.5 mi

Top 2%
×4stories
+66ft-88ft

Overall

401

Males

371

M18-39

371

25K→30K

15.5 - 18.6 mi

Top 1%
×9stories
+181ft-148ft

Overall

343

Males

316

M18-39

316

30K→20M

18.6 - 20.0 mi

Top 1%
×5stories
+64ft-50ft

Overall

366

Males

337

M18-39

337

20M→21M

20.0 - 21.0 mi

Top 1%
×8stories
+106ft-24ft

Overall

307

Males

281

M18-39

281

21M→35K

21.0 - 21.8 mi

Top 0.8%
×7stories
+17ft-86ft

Overall

204

Males

181

M18-39

181

35K→23M

21.8 - 23.0 mi

Top 1.0%
×5stories
+23ft-63ft

Overall

265

Males

240

M18-39

240

23M→24M

23.0 - 24.0 mi

Top 1%
×6stories
+12ft-82ft

Overall

296

Males

270

M18-39

270

24M→40K

24.0 - 24.9 mi

Top 1%
×1story
+6ft-20ft

Overall

272

Males

249

M18-39

249

40K→25.2M

24.9 - 25.2 mi

Top 1.0%
×1story
+13ft-16ft

Overall

254

Males

234

M18-39

234

25.2M→Finish

25.2 - 26.2 mi

Top 2%
×2stories
+22ft-21ft

Overall

407

Males

386

M18-39

386

Passing Analysis

Category:
Athletes Passed
293
Passed By
71
Net Change
+222
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#576
5K → 10K7214+58#576#518
10K → 15K1224-12#518#530
15K → 20K285+23#530#507
20K → Half28-6#507#513
Half → 25K243+21#513#492
25K → 30K414+37#492#455
30K → 20M153+12#455#443
20M → 21M132+11#443#432
21M → 35K100+10#432#422
35K → 23M220+22#422#400
23M → 24M131+12#400#388
24M → 40K181+17#388#371
40K → 25.2M60+6#371#365
25.2M → Finish176+11#365#354
TOTALS29371+222
📊

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