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BOSTON MARATHON 2023

Jonathan Stern

Bib: 4515•M

TX

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0:00
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Overall
#0 / 26622
Top 28%
Gender (Male)
#0 / 15176
Top 43%
Division (M18-39)
#0 / 5285
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:18
Rank: #2471
Start → 5K
20:18 | 6:32/mi
10K· 6.21 mi
40:24
Rank: #2512 (-41)
5K → 10K
20:06 | 6:28/mi
15K· 9.32 mi
1:00:29
Rank: #2483 (+29)
10K → 15K
20:05 | 6:28/mi
20K· 12.43 mi
1:20:51
Rank: #2484 (-1)
15K → 20K
20:22 | 6:33/mi
Half· 13.11 mi
1:25:18
Rank: #2499 (-15)
20K → Half
4:27 | 6:31/mi
25K· 15.53 mi
1:41:14
Rank: #2505 (-6)
Half → 25K
15:56 | 6:34/mi
30K· 18.64 mi
2:03:31
Rank: #2888 (-383)
25K → 30K
22:17 | 7:10/mi
20M
2:14:33
Rank: #3525 (-637)
30K → 20M
11:02 | 8:07/mi
21M
2:25:00
Rank: #4766 (-1241)
20M → 21M
10:27 | 10:27/mi
35K· 21.75 mi
2:31:28
Rank: #5158 (-392)
21M → 35K
6:28 | 8:39/mi
23M
2:44:12
Rank: #6042 (-884)
35K → 23M
12:44 | 10:10/mi
24M
2:53:53
Rank: #6604 (-562)
23M → 24M
9:41 | 9:41/mi
40K· 24.85 mi
3:02:12
Rank: #7073 (-469)
24M → 40K
8:19 | 9:44/mi
25.2M
3:05:52
Rank: #7287 (-214)
40K → 25.2M
3:40 | 10:38/mi
Finish· 26.22 mi
3:14:26
Rank: #7567 (-280)
25.2M → Finish
8:34 | 8:24/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:25:18
Pace6:30 /mi
2nd Half
Distance13.11 mi
Time1:49:08
Pace8:20 /mi
📊Positive Split: 27.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:2020:186:3220:18
6:32
-
10K
6.21 mi10:42:2640:246:3020:06
6:28
-0:04
15K
9.32 mi11:02:311:00:296:2920:05
6:28
0:00
20K
12.43 mi11:22:531:20:516:3020:22
6:33
+0:05
Half
13.11 mi11:27:201:25:186:304:27
6:31
-0:02
25K
15.53 mi11:43:161:41:146:3115:56
6:34
+0:03
30K
18.64 mi12:05:332:03:316:3822:17
7:10
+0:36
20M
20.00 mi12:16:352:14:336:4411:02
8:07
+0:57
21M
21.00 mi12:27:022:25:006:5410:27
10:27
+2:20
35K
21.75 mi12:33:302:31:286:586:28
8:39
-1:48
23M
23.00 mi12:46:142:44:127:0812:44
10:10
+1:31
24M
24.00 mi12:55:552:53:537:159:41
9:41
-0:29
40K
24.85 mi13:04:143:02:127:208:19
9:44
+0:03
25.2M
25.20 mi13:07:543:05:527:233:40
10:38
+0:54
Finish
26.22 mi13:16:283:14:267:258:34
8:24
-2:14

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

6:28 /mi

Average Pace

7:25 /mi

Slowest Pace

10:38 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:03:31

64% of race

Time at Steady Pace

26:04

13% of race

Time at Slower Pace

44:51

23% of race

Average Pace: 7:25 /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 mi10:22:2020:186:3220:18
6:32
#2471
10K
6.21 mi10:42:2640:246:3020:06
6:28
#2512
15K
9.32 mi11:02:311:00:296:2920:05
6:28
#2483
20K
12.43 mi11:22:531:20:516:3020:22
6:33
#2484
Half
13.11 mi11:27:201:25:186:304:27
6:31
#2499
25K
15.53 mi11:43:161:41:146:3115:56
6:34
#2505
30K
18.64 mi12:05:332:03:316:3822:17
7:10
#2888
20M
20.00 mi12:16:352:14:336:4411:02
8:07
#3525
21M
21.00 mi12:27:022:25:006:5410:27
10:27
#4766
35K
21.75 mi12:33:302:31:286:586:28
8:39
#5158
23M
23.00 mi12:46:142:44:127:0812:44
10:10
#6042
24M
24.00 mi12:55:552:53:537:159:41
9:41
#6604
40K
24.85 mi13:04:143:02:127:208:19
9:44
#7073
25.2M
25.20 mi13:07:543:05:527:233:40
10:38
#7287
Finish
26.22 mi13:16:283:14:267:258:34
8:24
#7567
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi2471235723572441(Top 9%)2342(Top 15%)2342(Top 44%)
10K6.21 mi3.10 mi2512-412395-382395-382624(Top 10%)2510(Top 17%)2510(Top 47%)
15K9.32 mi3.11 mi2483+292371+242371+242441(Top 9%)2342(Top 15%)2342(Top 44%)
20K12.43 mi3.11 mi2484-12379-82379-82603(Top 10%)2491(Top 16%)2491(Top 47%)
Half13.11 mi0.68 mi2499-152394-152394-152996(Top 11%)2871(Top 19%)2871(Top 54%)
25K15.53 mi2.42 mi2505-62398-42398-42561(Top 10%)2451(Top 16%)2451(Top 46%)
30K18.64 mi3.11 mi2888-3832763-3652763-3655351(Top 20%)4881(Top 32%)4881(Top 92%)
20M20.00 mi1.36 mi3525-6373335-5723335-57211117(Top 42%)8301(Top 55%)8301(Top 157%)
21M21.00 mi1.00 mi4766-12414432-10974432-109719415(Top 73%)11797(Top 78%)11797(Top 223%)
35K21.75 mi0.75 mi5158-3924755-3234755-32316043(Top 60%)10293(Top 68%)10293(Top 195%)
23M23.00 mi1.25 mi6042-8845451-6965451-69620472(Top 77%)12232(Top 81%)12232(Top 231%)
24M24.00 mi1.00 mi6604-5625857-4065857-40619809(Top 74%)11908(Top 78%)11908(Top 225%)
40K24.85 mi0.85 mi7073-4696168-3116168-31119076(Top 72%)11512(Top 76%)11512(Top 218%)
25.2M25.20 mi0.35 mi7287-2146301-1336301-13319438(Top 73%)11646(Top 77%)11646(Top 220%)
Finish26.22 mi1.02 mi7567-2806462-1616462-16114743(Top 55%)9594(Top 63%)9594(Top 182%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 9%
×21stories
+97ft-345ft

Overall

2441

Males

2342

M18-39

2342

5K→10K

3.1 - 6.2 mi

Top 10%
×5stories
+79ft-138ft

Overall

2624

Males

2510

M18-39

2510

10K→15K

6.2 - 9.3 mi

Top 9%
×3stories
+67ft-78ft

Overall

2441

Males

2342

M18-39

2342

15K→20K

9.3 - 12.4 mi

Top 10%
×5stories
+106ft-86ft

Overall

2603

Males

2491

M18-39

2491

20K→Half

12.4 - 13.1 mi

Top 11%
×2stories
+19ft-37ft

Overall

2996

Males

2871

M18-39

2871

Half→25K

13.1 - 15.5 mi

Top 10%
×4stories
+66ft-88ft

Overall

2561

Males

2451

M18-39

2451

25K→30K

15.5 - 18.6 mi

Top 20%
×9stories
+181ft-148ft

Overall

5351

Males

4881

M18-39

4881

30K→20M

18.6 - 20.0 mi

Top 42%
×5stories
+64ft-50ft

Overall

11117

Males

8301

M18-39

8301

20M→21M

20.0 - 21.0 mi

Top 73%
×8stories
+106ft-24ft

Overall

19415

Males

11797

M18-39

11797

21M→35K

21.0 - 21.8 mi

Top 60%
×7stories
+17ft-86ft

Overall

16043

Males

10293

M18-39

10293

35K→23M

21.8 - 23.0 mi

Top 77%
×5stories
+23ft-63ft

Overall

20472

Males

12232

M18-39

12232

23M→24M

23.0 - 24.0 mi

Top 74%
×6stories
+12ft-82ft

Overall

19809

Males

11908

M18-39

11908

24M→40K

24.0 - 24.9 mi

Top 72%
×1story
+6ft-20ft

Overall

19076

Males

11512

M18-39

11512

40K→25.2M

24.9 - 25.2 mi

Top 73%
×1story
+13ft-16ft

Overall

19438

Males

11646

M18-39

11646

25.2M→Finish

25.2 - 26.2 mi

Top 55%
×2stories
+22ft-21ft

Overall

14743

Males

9594

M18-39

9594

Passing Analysis

Category:
Athletes Passed
381
Passed By
5477
Net Change
-5096
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2471
5K → 10K119160-41#2471#2512
10K → 15K8556+29#2512#2483
15K → 20K6263-1#2483#2484
20K → Half520-15#2484#2499
Half → 25K4753-6#2499#2505
25K → 30K15398-383#2505#2888
30K → 20M4641-637#2888#3525
20M → 21M01241-1241#3525#4766
21M → 35K7399-392#4766#5158
35K → 23M4888-884#5158#6042
23M → 24M4566-562#6042#6604
24M → 40K5474-469#6604#7073
40K → 25.2M5219-214#7073#7287
25.2M → Finish19299-280#7287#7567
TOTALS3815477-5096
📊

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