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BOSTON MARATHON 2023

Jeffrey Stern

Bib: 605•M

CA

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
18:18
Rank: #510
Start → 5K
18:18 | 5:53/mi
10K· 6.21 mi
36:29
Rank: #507 (+3)
5K → 10K
18:11 | 5:51/mi
15K· 9.32 mi
54:44
Rank: #488 (+19)
10K → 15K
18:15 | 5:52/mi
20K· 12.43 mi
1:12:57
Rank: #443 (+45)
15K → 20K
18:13 | 5:52/mi
Half· 13.11 mi
1:16:57
Rank: #443
20K → Half
4:00 | 5:52/mi
25K· 15.53 mi
1:31:10
Rank: #429 (+14)
Half → 25K
14:13 | 5:52/mi
30K· 18.64 mi
1:50:08
Rank: #437 (-8)
25K → 30K
18:58 | 6:06/mi
20M
1:58:16
Rank: #428 (+9)
30K → 20M
8:08 | 5:59/mi
21M
2:04:46
Rank: #433 (-5)
20M → 21M
6:30 | 6:30/mi
35K· 21.75 mi
2:09:19
Rank: #440 (-7)
21M → 35K
4:33 | 6:05/mi
23M
2:16:54
Rank: #430 (+10)
35K → 23M
7:35 | 6:03/mi
24M
2:22:43
Rank: #411 (+19)
23M → 24M
5:49 | 5:49/mi
40K· 24.85 mi
2:27:54
Rank: #409 (+2)
24M → 40K
5:11 | 6:04/mi
25.2M
2:30:10
Rank: #402 (+7)
40K → 25.2M
2:16 | 6:34/mi
Finish· 26.22 mi
2:36:14
Rank: #396 (+6)
25.2M → Finish
6:04 | 5:57/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:16:57
Pace5:52 /mi
2nd Half
Distance13.11 mi
Time1:19:17
Pace6:03 /mi
📊Positive Split: 3.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:18:2918:185:5318:18
5:53
-
10K
6.21 mi10:36:4036:295:5218:11
5:51
-0:02
15K
9.32 mi10:54:5554:445:5218:15
5:52
+0:01
20K
12.43 mi11:13:081:12:575:5218:13
5:52
0:00
Half
13.11 mi11:17:081:16:575:524:00
5:52
0:00
25K
15.53 mi11:31:211:31:105:5214:13
5:52
0:00
30K
18.64 mi11:50:191:50:085:5418:58
6:06
+0:14
20M
20.00 mi11:58:271:58:165:558:08
5:59
-0:07
21M
21.00 mi12:04:572:04:465:566:30
6:30
+0:31
35K
21.75 mi12:09:302:09:195:574:33
6:05
-0:25
23M
23.00 mi12:17:052:16:545:577:35
6:03
-0:02
24M
24.00 mi12:22:542:22:435:575:49
5:49
-0:14
40K
24.85 mi12:28:052:27:545:575:11
6:04
+0:15
25.2M
25.20 mi12:30:212:30:105:582:16
6:34
+0:30
Finish
26.22 mi12:36:252:36:145:586:04
5:57
-0:37

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

5:49 /mi

Average Pace

5:58 /mi

Slowest Pace

6:34 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:27:28

94% of race

Time at Steady Pace

8:46

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 5:58 /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 mi10:18:2918:185:5318:18
5:53
#510
10K
6.21 mi10:36:4036:295:5218:11
5:51
#507
15K
9.32 mi10:54:5554:445:5218:15
5:52
#488
20K
12.43 mi11:13:081:12:575:5218:13
5:52
#443
Half
13.11 mi11:17:081:16:575:524:00
5:52
#443
25K
15.53 mi11:31:211:31:105:5214:13
5:52
#429
30K
18.64 mi11:50:191:50:085:5418:58
6:06
#437
20M
20.00 mi11:58:271:58:165:558:08
5:59
#428
21M
21.00 mi12:04:572:04:465:566:30
6:30
#433
35K
21.75 mi12:09:302:09:195:574:33
6:05
#440
23M
23.00 mi12:17:052:16:545:577:35
6:03
#430
24M
24.00 mi12:22:542:22:435:575:49
5:49
#411
40K
24.85 mi12:28:052:27:545:575:11
6:04
#409
25.2M
25.20 mi12:30:212:30:105:582:16
6:34
#402
Finish
26.22 mi12:36:252:36:145:586:04
5:57
#396
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi510470470460(Top 2%)425(Top 3%)425(Top 8%)
10K6.21 mi3.10 mi507+3466+4466+4504(Top 2%)463(Top 3%)463(Top 9%)
15K9.32 mi3.11 mi488+19449+17449+17460(Top 2%)425(Top 3%)425(Top 8%)
20K12.43 mi3.11 mi443+45407+42407+42380(Top 1%)347(Top 2%)347(Top 7%)
Half13.11 mi0.68 mi443407407470(Top 2%)432(Top 3%)432(Top 8%)
25K15.53 mi2.42 mi429+14394+13394+13348(Top 1%)320(Top 2%)320(Top 6%)
30K18.64 mi3.11 mi437-8401-7401-7511(Top 2%)478(Top 3%)478(Top 9%)
20M20.00 mi1.36 mi428+9393+8393+8330(Top 1%)305(Top 2%)305(Top 6%)
21M21.00 mi1.00 mi433-5398-5398-5638(Top 2%)600(Top 4%)600(Top 11%)
35K21.75 mi0.75 mi440-7405-7405-7850(Top 3%)807(Top 5%)807(Top 15%)
23M23.00 mi1.25 mi430+10395+10395+10379(Top 1%)353(Top 2%)353(Top 7%)
24M24.00 mi1.00 mi411+19377+18377+18272(Top 1%)248(Top 2%)248(Top 5%)
40K24.85 mi0.85 mi409+2375+2375+2419(Top 2%)392(Top 3%)392(Top 7%)
25.2M25.20 mi0.35 mi402+7368+7368+7596(Top 2%)563(Top 4%)563(Top 11%)
Finish26.22 mi1.02 mi396+6363+5363+5612(Top 2%)581(Top 4%)581(Top 11%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 2%
×21stories
+97ft-345ft

Overall

460

Males

425

M18-39

425

5K→10K

3.1 - 6.2 mi

Top 2%
×5stories
+79ft-138ft

Overall

504

Males

463

M18-39

463

10K→15K

6.2 - 9.3 mi

Top 2%
×3stories
+67ft-78ft

Overall

460

Males

425

M18-39

425

15K→20K

9.3 - 12.4 mi

Top 1%
×5stories
+106ft-86ft

Overall

380

Males

347

M18-39

347

20K→Half

12.4 - 13.1 mi

Top 2%
×2stories
+19ft-37ft

Overall

470

Males

432

M18-39

432

Half→25K

13.1 - 15.5 mi

Top 1%
×4stories
+66ft-88ft

Overall

348

Males

320

M18-39

320

25K→30K

15.5 - 18.6 mi

Top 2%
×9stories
+181ft-148ft

Overall

511

Males

478

M18-39

478

30K→20M

18.6 - 20.0 mi

Top 1%
×5stories
+64ft-50ft

Overall

330

Males

305

M18-39

305

20M→21M

20.0 - 21.0 mi

Top 2%
×8stories
+106ft-24ft

Overall

638

Males

600

M18-39

600

21M→35K

21.0 - 21.8 mi

Top 3%
×7stories
+17ft-86ft

Overall

850

Males

807

M18-39

807

35K→23M

21.8 - 23.0 mi

Top 1%
×5stories
+23ft-63ft

Overall

379

Males

353

M18-39

353

23M→24M

23.0 - 24.0 mi

Top 1%
×6stories
+12ft-82ft

Overall

272

Males

248

M18-39

248

24M→40K

24.0 - 24.9 mi

Top 2%
×1story
+6ft-20ft

Overall

419

Males

392

M18-39

392

40K→25.2M

24.9 - 25.2 mi

Top 2%
×1story
+13ft-16ft

Overall

596

Males

563

M18-39

563

25.2M→Finish

25.2 - 26.2 mi

Top 2%
×2stories
+22ft-21ft

Overall

612

Males

581

M18-39

581

Passing Analysis

Category:
Athletes Passed
225
Passed By
111
Net Change
+114
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#510
5K → 10K3330+3#510#507
10K → 15K234+19#507#488
15K → 20K494+45#488#443
20K → Half440#443#443
Half → 25K162+14#443#429
25K → 30K2028-8#429#437
30K → 20M134+9#437#428
20M → 21M510-5#428#433
21M → 35K310-7#433#440
35K → 23M111+10#440#430
23M → 24M190+19#430#411
24M → 40K119+2#411#409
40K → 25.2M81+7#409#402
25.2M → Finish104+6#402#396
TOTALS225111+114
📊

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