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BOSTON MARATHON 2023

Sam Westerberg

Bib: 343•M

MN

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 6%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
18:25
Rank: #578
Start → 5K
18:25 | 5:56/mi
10K· 6.21 mi
36:29
Rank: #506 (+72)
5K → 10K
18:04 | 5:49/mi
15K· 9.32 mi
54:29
Rank: #438 (+68)
10K → 15K
18:00 | 5:48/mi
20K· 12.43 mi
1:12:52
Rank: #433 (+5)
15K → 20K
18:23 | 5:55/mi
Half· 13.11 mi
1:16:52
Rank: #433
20K → Half
4:00 | 5:52/mi
25K· 15.53 mi
1:31:12
Rank: #431 (+2)
Half → 25K
14:20 | 5:55/mi
30K· 18.64 mi
1:49:59
Rank: #421 (+10)
25K → 30K
18:47 | 6:03/mi
20M
1:58:13
Rank: #419 (+2)
30K → 20M
8:14 | 6:04/mi
21M
2:04:36
Rank: #418 (+1)
20M → 21M
6:23 | 6:23/mi
35K· 21.75 mi
2:08:59
Rank: #420 (-2)
21M → 35K
4:23 | 5:52/mi
23M
2:16:38
Rank: #414 (+6)
35K → 23M
7:39 | 6:07/mi
24M
2:22:36
Rank: #402 (+12)
23M → 24M
5:58 | 5:58/mi
40K· 24.85 mi
2:27:45
Rank: #393 (+9)
24M → 40K
5:09 | 6:01/mi
25.2M
2:29:57
Rank: #384 (+9)
40K → 25.2M
2:12 | 6:23/mi
Finish· 26.22 mi
2:35:51
Rank: #379 (+5)
25.2M → Finish
5:54 | 5:47/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:16:52
Pace5:52 /mi
2nd Half
Distance13.11 mi
Time1:18:59
Pace6:02 /mi
📊Positive Split: 2.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:18:3518:255:5618:25
5:56
-
10K
6.21 mi10:36:3936:295:5218:04
5:49
-0:07
15K
9.32 mi10:54:3954:295:5118:00
5:48
-0:01
20K
12.43 mi11:13:021:12:525:5218:23
5:55
+0:07
Half
13.11 mi11:17:021:16:525:524:00
5:52
-0:03
25K
15.53 mi11:31:221:31:125:5214:20
5:55
+0:03
30K
18.64 mi11:50:091:49:595:5418:47
6:03
+0:08
20M
20.00 mi11:58:231:58:135:558:14
6:04
+0:01
21M
21.00 mi12:04:462:04:365:566:23
6:23
+0:19
35K
21.75 mi12:09:092:08:595:564:23
5:52
-0:31
23M
23.00 mi12:16:482:16:385:567:39
6:07
+0:15
24M
24.00 mi12:22:462:22:365:575:58
5:58
-0:09
40K
24.85 mi12:27:552:27:455:575:09
6:01
+0:03
25.2M
25.20 mi12:30:072:29:575:572:12
6:23
+0:22
Finish
26.22 mi12:36:012:35:515:575:54
5:47
-0:36

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

5:47 /mi

Average Pace

5:57 /mi

Slowest Pace

6:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:27:16

94% of race

Time at Steady Pace

8:35

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 5:57 /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 mi10:18:3518:255:5618:25
5:56
#578
10K
6.21 mi10:36:3936:295:5218:04
5:49
#506
15K
9.32 mi10:54:3954:295:5118:00
5:48
#438
20K
12.43 mi11:13:021:12:525:5218:23
5:55
#433
Half
13.11 mi11:17:021:16:525:524:00
5:52
#433
25K
15.53 mi11:31:221:31:125:5214:20
5:55
#431
30K
18.64 mi11:50:091:49:595:5418:47
6:03
#421
20M
20.00 mi11:58:231:58:135:558:14
6:04
#419
21M
21.00 mi12:04:462:04:365:566:23
6:23
#418
35K
21.75 mi12:09:092:08:595:564:23
5:52
#420
23M
23.00 mi12:16:482:16:385:567:39
6:07
#414
24M
24.00 mi12:22:462:22:365:575:58
5:58
#402
40K
24.85 mi12:27:552:27:455:575:09
6:01
#393
25.2M
25.20 mi12:30:072:29:575:572:12
6:23
#384
Finish
26.22 mi12:36:012:35:515:575:54
5:47
#379
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi578535535362(Top 1%)329(Top 2%)329(Top 6%)
10K6.21 mi3.10 mi506+72465+70465+70446(Top 2%)411(Top 3%)411(Top 8%)
15K9.32 mi3.11 mi438+68403+62403+62362(Top 1%)329(Top 2%)329(Top 6%)
20K12.43 mi3.11 mi433+5398+5398+5437(Top 2%)401(Top 3%)401(Top 8%)
Half13.11 mi0.68 mi433398398469(Top 2%)431(Top 3%)431(Top 8%)
25K15.53 mi2.42 mi431+2396+2396+2403(Top 2%)373(Top 2%)373(Top 7%)
30K18.64 mi3.11 mi421+10388+8388+8427(Top 2%)395(Top 3%)395(Top 7%)
20M20.00 mi1.36 mi419+2387+1387+1421(Top 2%)387(Top 3%)387(Top 7%)
21M21.00 mi1.00 mi418+1383+4383+4455(Top 2%)422(Top 3%)422(Top 8%)
35K21.75 mi0.75 mi420-2385-2385-2441(Top 2%)407(Top 3%)407(Top 8%)
23M23.00 mi1.25 mi414+6380+5380+5466(Top 2%)435(Top 3%)435(Top 8%)
24M24.00 mi1.00 mi402+12368+12368+12479(Top 2%)452(Top 3%)452(Top 9%)
40K24.85 mi0.85 mi393+9359+9359+9368(Top 1%)343(Top 2%)343(Top 6%)
25.2M25.20 mi0.35 mi384+9352+7352+7315(Top 1%)294(Top 2%)294(Top 6%)
Finish26.22 mi1.02 mi379+5347+5347+5343(Top 1%)325(Top 2%)325(Top 6%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 1%
×21stories
+97ft-345ft

Overall

362

Males

329

M18-39

329

5K→10K

3.1 - 6.2 mi

Top 2%
×5stories
+79ft-138ft

Overall

446

Males

411

M18-39

411

10K→15K

6.2 - 9.3 mi

Top 1%
×3stories
+67ft-78ft

Overall

362

Males

329

M18-39

329

15K→20K

9.3 - 12.4 mi

Top 2%
×5stories
+106ft-86ft

Overall

437

Males

401

M18-39

401

20K→Half

12.4 - 13.1 mi

Top 2%
×2stories
+19ft-37ft

Overall

469

Males

431

M18-39

431

Half→25K

13.1 - 15.5 mi

Top 2%
×4stories
+66ft-88ft

Overall

403

Males

373

M18-39

373

25K→30K

15.5 - 18.6 mi

Top 2%
×9stories
+181ft-148ft

Overall

427

Males

395

M18-39

395

30K→20M

18.6 - 20.0 mi

Top 2%
×5stories
+64ft-50ft

Overall

421

Males

387

M18-39

387

20M→21M

20.0 - 21.0 mi

Top 2%
×8stories
+106ft-24ft

Overall

455

Males

422

M18-39

422

21M→35K

21.0 - 21.8 mi

Top 2%
×7stories
+17ft-86ft

Overall

441

Males

407

M18-39

407

35K→23M

21.8 - 23.0 mi

Top 2%
×5stories
+23ft-63ft

Overall

466

Males

435

M18-39

435

23M→24M

23.0 - 24.0 mi

Top 2%
×6stories
+12ft-82ft

Overall

479

Males

452

M18-39

452

24M→40K

24.0 - 24.9 mi

Top 1%
×1story
+6ft-20ft

Overall

368

Males

343

M18-39

343

40K→25.2M

24.9 - 25.2 mi

Top 1%
×1story
+13ft-16ft

Overall

315

Males

294

M18-39

294

25.2M→Finish

25.2 - 26.2 mi

Top 1%
×2stories
+22ft-21ft

Overall

343

Males

325

M18-39

325

Passing Analysis

Category:
Athletes Passed
284
Passed By
85
Net Change
+199
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#578
5K → 10K819+72#578#506
10K → 15K702+68#506#438
15K → 20K1611+5#438#433
20K → Half440#433#433
Half → 25K97+2#433#431
25K → 30K2515+10#431#421
30K → 20M86+2#421#419
20M → 21M98+1#419#418
21M → 35K46-2#418#420
35K → 23M126+6#420#414
23M → 24M120+12#414#402
24M → 40K145+9#402#393
40K → 25.2M123+9#393#384
25.2M → Finish83+5#384#379
TOTALS28485+199
📊

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