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BOSTON MARATHON 2023

Thomas Golembeski

Bib: 24672•M

CT

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M45-49)
#0 / 2252
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
28:25
Rank: #21029
Start → 5K
28:25 | 9:09/mi
10K· 6.21 mi
57:06
Rank: #21358 (-329)
5K → 10K
28:41 | 9:14/mi
15K· 9.32 mi
1:26:56
Rank: #21761 (-403)
10K → 15K
29:50 | 9:36/mi
20K· 12.43 mi
1:57:31
Rank: #21970 (-209)
15K → 20K
30:35 | 9:51/mi
Half· 13.11 mi
2:04:01
Rank: #21972 (-2)
20K → Half
6:30 | 9:32/mi
25K· 15.53 mi
2:27:58
Rank: #21959 (+13)
Half → 25K
23:57 | 9:53/mi
30K· 18.64 mi
3:01:04
Rank: #22103 (-144)
25K → 30K
33:06 | 10:39/mi
20M
3:14:46
Rank: #21985 (+118)
30K → 20M
13:42 | 10:05/mi
21M
3:25:57
Rank: #21946 (+39)
20M → 21M
11:11 | 11:11/mi
35K· 21.75 mi
3:33:12
Rank: #21906 (+40)
21M → 35K
7:15 | 9:41/mi
23M
3:46:46
Rank: #21903 (+3)
35K → 23M
13:34 | 10:50/mi
24M
3:56:43
Rank: #21855 (+48)
23M → 24M
9:57 | 9:57/mi
40K· 24.85 mi
4:05:53
Rank: #21850 (+5)
24M → 40K
9:10 | 10:43/mi
25.2M
4:09:53
Rank: #21847 (+3)
40K → 25.2M
4:00 | 11:36/mi
Finish· 26.22 mi
4:20:21
Rank: #21874 (-27)
25.2M → Finish
10:28 | 10:16/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:04:01
Pace9:28 /mi
2nd Half
Distance13.11 mi
Time2:16:20
Pace10:24 /mi
📊Positive Split: 9.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:43:5428:259:0928:25
9:09
-
10K
6.21 mi12:12:3557:069:1128:41
9:14
+0:05
15K
9.32 mi12:42:251:26:569:2029:50
9:36
+0:22
20K
12.43 mi13:13:001:57:319:2730:35
9:51
+0:15
Half
13.11 mi13:19:302:04:019:286:30
9:32
-0:19
25K
15.53 mi13:43:272:27:589:3223:57
9:53
+0:21
30K
18.64 mi14:16:333:01:049:4333:06
10:39
+0:46
20M
20.00 mi14:30:153:14:469:4413:42
10:05
-0:34
21M
21.00 mi14:41:263:25:579:4811:11
11:11
+1:06
35K
21.75 mi14:48:413:33:129:487:15
9:41
-1:30
23M
23.00 mi15:02:153:46:469:5213:34
10:50
+1:09
24M
24.00 mi15:12:123:56:439:529:57
9:57
-0:53
40K
24.85 mi15:21:224:05:539:549:10
10:43
+0:46
25.2M
25.20 mi15:25:224:09:539:554:00
11:36
+0:53
Finish
26.22 mi15:35:504:20:219:5610:28
10:16
-1:20

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

9:09 /mi

Average Pace

9:56 /mi

Slowest Pace

11:36 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:33:26

36% of race

Time at Steady Pace

1:35:54

37% of race

Time at Slower Pace

1:11:01

27% of race

Average Pace: 9:56 /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 mi11:43:5428:259:0928:25
9:09
#21029
10K
6.21 mi12:12:3557:069:1128:41
9:14
#21358
15K
9.32 mi12:42:251:26:569:2029:50
9:36
#21761
20K
12.43 mi13:13:001:57:319:2730:35
9:51
#21970
Half
13.11 mi13:19:302:04:019:286:30
9:32
#21972
25K
15.53 mi13:43:272:27:589:3223:57
9:53
#21959
30K
18.64 mi14:16:333:01:049:4333:06
10:39
#22103
20M
20.00 mi14:30:153:14:469:4413:42
10:05
#21985
21M
21.00 mi14:41:263:25:579:4811:11
11:11
#21946
35K
21.75 mi14:48:413:33:129:487:15
9:41
#21906
23M
23.00 mi15:02:153:46:469:5213:34
10:50
#21903
24M
24.00 mi15:12:123:56:439:529:57
9:57
#21855
40K
24.85 mi15:21:224:05:539:549:10
10:43
#21850
25.2M
25.20 mi15:25:224:09:539:554:00
11:36
#21847
Finish
26.22 mi15:35:504:20:219:5610:28
10:16
#21874
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi21029126221262222522(Top 85%)13421(Top 88%)13421(Top 596%)
10K6.21 mi3.10 mi21358-32912833-21112833-21121712(Top 82%)13028(Top 86%)13028(Top 579%)
15K9.32 mi3.11 mi21761-40313037-20413037-20422522(Top 85%)13421(Top 88%)13421(Top 596%)
20K12.43 mi3.11 mi21970-20913130-9313130-9322502(Top 85%)13395(Top 88%)13395(Top 595%)
Half13.11 mi0.68 mi21972-213134-413134-422158(Top 83%)13268(Top 87%)13268(Top 589%)
25K15.53 mi2.42 mi21959+1313136-213136-221918(Top 82%)13102(Top 86%)13102(Top 582%)
30K18.64 mi3.11 mi22103-14413185-4913185-4922511(Top 85%)13298(Top 88%)13298(Top 590%)
20M20.00 mi1.36 mi21985+11813126+5913126+5920695(Top 78%)12427(Top 82%)12427(Top 552%)
21M21.00 mi1.00 mi21946+3913101+2513101+2521224(Top 80%)12620(Top 83%)12620(Top 560%)
35K21.75 mi0.75 mi21906+4013083+1813083+1820442(Top 77%)12233(Top 81%)12233(Top 543%)
23M23.00 mi1.25 mi21903+313064+1913064+1922029(Top 83%)12917(Top 85%)12917(Top 574%)
24M24.00 mi1.00 mi21855+4813031+3313031+3320643(Top 78%)12274(Top 81%)12274(Top 545%)
40K24.85 mi0.85 mi21850+513017+1413017+1421748(Top 82%)12711(Top 84%)12711(Top 564%)
25.2M25.20 mi0.35 mi21847+313010+713010+721743(Top 82%)12737(Top 84%)12737(Top 566%)
Finish26.22 mi1.02 mi21874-2713011-113011-122455(Top 84%)13074(Top 86%)13074(Top 581%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 85%
×21stories
+97ft-345ft

Overall

22522

Males

13421

M45-49

13421

5K→10K

3.1 - 6.2 mi

Top 82%
×5stories
+79ft-138ft

Overall

21712

Males

13028

M45-49

13028

10K→15K

6.2 - 9.3 mi

Top 85%
×3stories
+67ft-78ft

Overall

22522

Males

13421

M45-49

13421

15K→20K

9.3 - 12.4 mi

Top 85%
×5stories
+106ft-86ft

Overall

22502

Males

13395

M45-49

13395

20K→Half

12.4 - 13.1 mi

Top 83%
×2stories
+19ft-37ft

Overall

22158

Males

13268

M45-49

13268

Half→25K

13.1 - 15.5 mi

Top 82%
×4stories
+66ft-88ft

Overall

21918

Males

13102

M45-49

13102

25K→30K

15.5 - 18.6 mi

Top 85%
×9stories
+181ft-148ft

Overall

22511

Males

13298

M45-49

13298

30K→20M

18.6 - 20.0 mi

Top 78%
×5stories
+64ft-50ft

Overall

20695

Males

12427

M45-49

12427

20M→21M

20.0 - 21.0 mi

Top 80%
×8stories
+106ft-24ft

Overall

21224

Males

12620

M45-49

12620

21M→35K

21.0 - 21.8 mi

Top 77%
×7stories
+17ft-86ft

Overall

20442

Males

12233

M45-49

12233

35K→23M

21.8 - 23.0 mi

Top 83%
×5stories
+23ft-63ft

Overall

22029

Males

12917

M45-49

12917

23M→24M

23.0 - 24.0 mi

Top 78%
×6stories
+12ft-82ft

Overall

20643

Males

12274

M45-49

12274

24M→40K

24.0 - 24.9 mi

Top 82%
×1story
+6ft-20ft

Overall

21748

Males

12711

M45-49

12711

40K→25.2M

24.9 - 25.2 mi

Top 82%
×1story
+13ft-16ft

Overall

21743

Males

12737

M45-49

12737

25.2M→Finish

25.2 - 26.2 mi

Top 84%
×2stories
+22ft-21ft

Overall

22455

Males

13074

M45-49

13074

Passing Analysis

Category:
Athletes Passed
944
Passed By
1789
Net Change
-845
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21029
5K → 10K143472-329#21029#21358
10K → 15K49452-403#21358#21761
15K → 20K66275-209#21761#21970
20K → Half2325-2#21970#21972
Half → 25K10289+13#21972#21959
25K → 30K88232-144#21959#22103
30K → 20M13214+118#22103#21985
20M → 21M8344+39#21985#21946
21M → 35K466+40#21946#21906
35K → 23M6259+3#21906#21903
23M → 24M6315+48#21903#21855
24M → 40K4136+5#21855#21850
40K → 25.2M1815+3#21850#21847
25.2M → Finish2855-27#21847#21874
TOTALS9441789-845
📊

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