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BOSTON MARATHON 2023

Alex Shterenberg

Bib: 10927•M

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 40%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Top 44%
Division (M50-54)
#0 / 2052
Top 45%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:22
Rank: #9798
Start → 5K
7:31/mi
23:22 split
10K· 6.21 mi
46:02
Rank: #9240 (+558)
5K → 10K
7:18/mi
22:40 split
15K· 9.32 mi
1:09:38
Rank: #9786 (-546)
10K → 15K
7:36/mi
23:36 split
20K· 12.43 mi
1:32:34
Rank: #9403 (+383)
15K → 20K
7:23/mi
22:56 split
Half· 13.11 mi
1:37:36
Rank: #9387 (+16)
20K → Half
7:23/mi
5:02 split
25K· 15.53 mi
1:55:48
Rank: #9272 (+115)
Half → 25K
7:30/mi
18:12 split
30K· 18.64 mi
2:20:38
Rank: #9533 (-261)
25K → 30K
8:00/mi
24:50 split
20M
2:31:31
Rank: #9572 (-39)
30K → 20M
8:01/mi
10:53 split
21M
2:40:15
Rank: #9679 (-107)
20M → 21M
8:44/mi
8:44 split
35K· 21.75 mi
2:46:28
Rank: #9833 (-154)
21M → 35K
8:19/mi
6:13 split
23M
2:57:18
Rank: #10078 (-245)
35K → 23M
8:39/mi
10:50 split
24M
3:06:00
Rank: #10339 (-261)
23M → 24M
8:42/mi
8:42 split
40K· 24.85 mi
3:13:40
Rank: #10560 (-221)
24M → 40K
8:58/mi
7:40 split
25.2M
3:16:43
Rank: #10568 (-8)
40K → 25.2M
8:51/mi
3:03 split
Finish· 26.22 mi
3:24:54
Rank: #10617 (-49)
25.2M → Finish
8:02/mi
8:11 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:37:36
Pace7:27 /mi
2nd Half
Distance13.11 mi
Time1:47:18
Pace8:11 /mi
📊Positive Split: 9.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:3323:227:3123:22
7:31
-
10K
6.21 mi11:14:1346:027:2522:40
7:18
-0:13
15K
9.32 mi11:37:491:09:387:2823:36
7:36
+0:18
20K
12.43 mi12:00:451:32:347:2722:56
7:23
-0:13
Half
13.11 mi12:05:471:37:367:275:02
7:23
0:00
25K
15.53 mi12:23:591:55:487:2718:12
7:30
+0:07
30K
18.64 mi12:48:492:20:387:3324:50
8:00
+0:30
20M
20.00 mi12:59:422:31:317:3510:53
8:01
+0:01
21M
21.00 mi13:08:262:40:157:388:44
8:44
+0:43
35K
21.75 mi13:14:392:46:287:396:13
8:19
-0:25
23M
23.00 mi13:25:292:57:187:4310:50
8:39
+0:20
24M
24.00 mi13:34:113:06:007:458:42
8:42
+0:03
40K
24.85 mi13:41:513:13:407:487:40
8:58
+0:16
25.2M
25.20 mi13:44:543:16:437:483:03
8:51
-0:07
Finish
26.22 mi13:53:053:24:547:498:11
8:02
-0:49

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

7:18 /mi

Average Pace

7:49 /mi

Slowest Pace

8:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:55:48

57% of race

Time at Steady Pace

43:54

21% of race

Time at Slower Pace

45:12

22% of race

Average Pace: 7:49 /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 mi10:51:3323:227:3123:22
7:31
#9798
10K
6.21 mi11:14:1346:027:2522:40
7:18
#9240
15K
9.32 mi11:37:491:09:387:2823:36
7:36
#9786
20K
12.43 mi12:00:451:32:347:2722:56
7:23
#9403
Half
13.11 mi12:05:471:37:367:275:02
7:23
#9387
25K
15.53 mi12:23:591:55:487:2718:12
7:30
#9272
30K
18.64 mi12:48:492:20:387:3324:50
8:00
#9533
20M
20.00 mi12:59:422:31:317:3510:53
8:01
#9572
21M
21.00 mi13:08:262:40:157:388:44
8:44
#9679
35K
21.75 mi13:14:392:46:287:396:13
8:19
#9833
23M
23.00 mi13:25:292:57:187:4310:50
8:39
#10078
24M
24.00 mi13:34:113:06:007:458:42
8:42
#10339
40K
24.85 mi13:41:513:13:407:487:40
8:58
#10560
25.2M
25.20 mi13:44:543:16:437:483:03
8:51
#10568
Finish
26.22 mi13:53:053:24:547:498:11
8:02
#10617
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi97988033803310973(Top 41%)8630(Top 57%)8630(Top 421%)
10K6.21 mi3.10 mi9240+5587717+3167717+3168835(Top 33%)7481(Top 49%)7481(Top 365%)
15K9.32 mi3.11 mi9786-5468031-3148031-31410973(Top 41%)8630(Top 57%)8630(Top 421%)
20K12.43 mi3.11 mi9403+3837797+2347797+2348374(Top 31%)7117(Top 47%)7117(Top 347%)
Half13.11 mi0.68 mi9387+167785+127785+129238(Top 35%)7673(Top 51%)7673(Top 374%)
25K15.53 mi2.42 mi9272+1157708+777708+778838(Top 33%)7339(Top 48%)7339(Top 358%)
30K18.64 mi3.11 mi9533-2617824-1167824-11610831(Top 41%)8257(Top 54%)8257(Top 402%)
20M20.00 mi1.36 mi9572-397822+27822+210311(Top 39%)7924(Top 52%)7924(Top 386%)
21M21.00 mi1.00 mi9679-1077872-507872-5011841(Top 44%)8502(Top 56%)8502(Top 414%)
35K21.75 mi0.75 mi9833-1547933-617933-6114101(Top 53%)9456(Top 62%)9456(Top 461%)
23M23.00 mi1.25 mi10078-2458031-988031-9814062(Top 53%)9384(Top 62%)9384(Top 457%)
24M24.00 mi1.00 mi10339-2618131-1008131-10015626(Top 59%)9996(Top 66%)9996(Top 487%)
40K24.85 mi0.85 mi10560-2218203-728203-7215930(Top 60%)10091(Top 66%)10091(Top 492%)
25.2M25.20 mi0.35 mi10568-88198+58198+511514(Top 43%)8028(Top 53%)8028(Top 391%)
Finish26.22 mi1.02 mi10617-498205-78205-712317(Top 46%)8431(Top 56%)8431(Top 411%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 41%
×21story building
+97ft-345ft

Overall

10973

Males

8630

M50-54

8630

5K→10K

3.1 - 6.2 mi

Top 33%
×5story building
+79ft-138ft

Overall

8835

Males

7481

M50-54

7481

10K→15K

6.2 - 9.3 mi

Top 41%
×3story building
+67ft-78ft

Overall

10973

Males

8630

M50-54

8630

15K→20K

9.3 - 12.4 mi

Top 31%
×5story building
+106ft-86ft

Overall

8374

Males

7117

M50-54

7117

20K→Half

12.4 - 13.1 mi

Top 35%
×2story building
+19ft-37ft

Overall

9238

Males

7673

M50-54

7673

Half→25K

13.1 - 15.5 mi

Top 33%
×4story building
+66ft-88ft

Overall

8838

Males

7339

M50-54

7339

25K→30K

15.5 - 18.6 mi

Top 41%
×9story building
+181ft-148ft

Overall

10831

Males

8257

M50-54

8257

30K→20M

18.6 - 20.0 mi

Top 39%
×5story building
+64ft-50ft

Overall

10311

Males

7924

M50-54

7924

20M→21M

20.0 - 21.0 mi

Top 44%
×8story building
+106ft-24ft

Overall

11841

Males

8502

M50-54

8502

21M→35K

21.0 - 21.8 mi

Top 53%
×7story building
+17ft-86ft

Overall

14101

Males

9456

M50-54

9456

35K→23M

21.8 - 23.0 mi

Top 53%
×5story building
+23ft-63ft

Overall

14062

Males

9384

M50-54

9384

23M→24M

23.0 - 24.0 mi

Top 59%
×6story building
+12ft-82ft

Overall

15626

Males

9996

M50-54

9996

24M→40K

24.0 - 24.9 mi

Top 60%
×1story
+6ft-20ft

Overall

15930

Males

10091

M50-54

10091

40K→25.2M

24.9 - 25.2 mi

Top 43%
×1story
+13ft-16ft

Overall

11514

Males

8028

M50-54

8028

25.2M→Finish

25.2 - 26.2 mi

Top 46%
×2story building
+22ft-21ft

Overall

12317

Males

8431

M50-54

8431

Passing Analysis

Category:
Athletes Passed
1693*
Passed By
2509
Net Change
-819
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9798
5K → 10K65092+558#9798#9240
10K → 15K44590-546#9240#9786
15K → 20K398*15+383#9786#9403
20K → Half3216+16#9403#9387
Half → 25K17055+115#9387#9272
25K → 30K106367-261#9272#9533
30K → 20M65104-39#9533#9572
20M → 21M46153-107#9572#9679
21M → 35K17171-154#9679#9833
35K → 23M31274-245#9833#10078
23M → 24M24284-261#10078#10339
24M → 40K24245-221#10339#10560
40K → 25.2M2836-8#10560#10568
25.2M → Finish58107-49#10568#10617
TOTALS1693*2509-819

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

Passing Visuals

Category:
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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