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BOSTON MARATHON 2023

Kowsik Guruswamy

Bib: 12639•M

CA

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

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
8:09/mi
25:18
↑ 97↓ 3451.5%
10K· 6.21 mi
7:48/mi
49:31
↑ 79↓ 1380.4%
15K· 9.32 mi
8:14/mi
1:15:06
↑ 67↓ 78
20K· 12.43 mi
8:07/mi
1:40:18
↑ 106↓ 860.1%
Half· 13.11 mi
8:02/mi
1:45:47
↑ 19↓ 370.5%
25K· 15.53 mi
8:15/mi
2:05:48
↑ 66↓ 880.2%
30K· 18.64 mi
8:32/mi
2:32:18
↑ 181↓ 1480.2%
20M
8:31/mi
2:43:52
↑ 64↓ 500.2%
21M
9:03/mi
2:52:55
↑ 106↓ 241.6%
35K· 21.75 mi
8:31/mi
2:59:17
↑ 17↓ 861.7%
23M
8:34/mi
3:10:00
↑ 23↓ 630.6%
24M
8:46/mi
3:18:46
↓ 821.3%
40K· 24.85 mi
8:47/mi
3:26:17
↓ 200.3%
25.2M
11:01/mi
3:30:05
↑ 13↓ 160.2%
Finish· 26.22 mi
8:14/mi
3:38:28
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:45:47
Pace8:04 /mi
2nd Half
Distance13.11 mi
Time1:52:41
Pace8:36 /mi
📊Positive Split: 6.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:1225:188:0925:18
8:09
-
10K
6.21 mi11:17:2549:317:5824:13
7:48
-0:21
15K
9.32 mi11:43:001:15:068:0325:35
8:14
+0:26
20K
12.43 mi12:08:121:40:188:0425:12
8:07
-0:07
Half
13.11 mi12:13:411:45:478:045:29
8:02
-0:05
25K
15.53 mi12:33:422:05:488:0620:01
8:15
+0:13
30K
18.64 mi13:00:122:32:188:1026:30
8:32
+0:17
20M
20.00 mi13:11:462:43:528:1211:34
8:31
-0:01
21M
21.00 mi13:20:492:52:558:149:03
9:03
+0:32
35K
21.75 mi13:27:112:59:178:156:22
8:31
-0:32
23M
23.00 mi13:37:543:10:008:1610:43
8:34
+0:03
24M
24.00 mi13:46:403:18:468:178:46
8:46
+0:12
40K
24.85 mi13:54:113:26:178:187:31
8:47
+0:01
25.2M
25.20 mi13:57:593:30:058:203:48
11:01
+2:14
Finish
26.22 mi14:06:223:38:288:208:23
8:14
-2:47

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

7:48 /mi

Average Pace

8:20 /mi

Slowest Pace

11:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:20:12

37% of race

Time at Steady Pace

2:05:25

57% of race

Time at Slower Pace

12:51

6% of race

Average Pace: 8:20 /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 mi10:53:1225:188:0925:18
8:09
#15015
10K
6.21 mi11:17:2549:317:5824:13
7:48
#14143
15K
9.32 mi11:43:001:15:068:0325:35
8:14
#14798
20K
12.43 mi12:08:121:40:188:0425:12
8:07
#14658
Half
13.11 mi12:13:411:45:478:045:29
8:02
#14641
25K
15.53 mi12:33:422:05:488:0620:01
8:15
#14639
30K
18.64 mi13:00:122:32:188:1026:30
8:32
#14593
20M
20.00 mi13:11:462:43:528:1211:34
8:31
#14502
21M
21.00 mi13:20:492:52:558:149:03
9:03
#14444
35K
21.75 mi13:27:112:59:178:156:22
8:31
#14484
23M
23.00 mi13:37:543:10:008:1610:43
8:34
#14411
24M
24.00 mi13:46:403:18:468:178:46
8:46
#14456
40K
24.85 mi13:54:113:26:178:187:31
8:47
#14473
25.2M
25.20 mi13:57:593:30:058:203:48
11:01
#14607
Finish
26.22 mi14:06:223:38:288:208:23
8:14
#14550
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi15015103441034416096(Top 60%)10724(Top 71%)10724(Top 523%)
10K6.21 mi3.10 mi14143+8729998+3469998+34613059(Top 49%)9579(Top 63%)9579(Top 467%)
15K9.32 mi3.11 mi14798-65510240-24210240-24216096(Top 60%)10724(Top 71%)10724(Top 523%)
20K12.43 mi3.11 mi14658+14010172+6810172+6814282(Top 54%)9988(Top 66%)9988(Top 487%)
Half13.11 mi0.68 mi14641+1710167+510167+514628(Top 55%)10148(Top 67%)10148(Top 495%)
25K15.53 mi2.42 mi14639+210129+3810129+3814628(Top 55%)10007(Top 66%)10007(Top 488%)
30K18.64 mi3.11 mi14593+4610083+4610083+4614495(Top 54%)9853(Top 65%)9853(Top 480%)
20M20.00 mi1.36 mi14502+9110013+7010013+7013693(Top 51%)9445(Top 62%)9445(Top 460%)
21M21.00 mi1.00 mi14444+589963+509963+5013670(Top 51%)9349(Top 62%)9349(Top 456%)
35K21.75 mi0.75 mi14484-409969-69969-615350(Top 58%)10003(Top 66%)10003(Top 487%)
23M23.00 mi1.25 mi14411+739915+549915+5413572(Top 51%)9180(Top 60%)9180(Top 447%)
24M24.00 mi1.00 mi14456-459913+29913+216005(Top 60%)10173(Top 67%)10173(Top 496%)
40K24.85 mi0.85 mi14473-179894+199894+1915020(Top 56%)9693(Top 64%)9693(Top 472%)
25.2M25.20 mi0.35 mi14607-1349936-429936-4220463(Top 77%)12130(Top 80%)12130(Top 591%)
Finish26.22 mi1.02 mi14550+579904+329904+3213601(Top 51%)9060(Top 60%)9060(Top 442%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 60%
×21story building
+97ft-345ft

Overall

16096

Males

10724

M50-54

10724

5K→10K

3.1 - 6.2 mi

Top 49%
×5story building
+79ft-138ft

Overall

13059

Males

9579

M50-54

9579

10K→15K

6.2 - 9.3 mi

Top 60%
×3story building
+67ft-78ft

Overall

16096

Males

10724

M50-54

10724

15K→20K

9.3 - 12.4 mi

Top 54%
×5story building
+106ft-86ft

Overall

14282

Males

9988

M50-54

9988

20K→Half

12.4 - 13.1 mi

Top 55%
×2story building
+19ft-37ft

Overall

14628

Males

10148

M50-54

10148

Half→25K

13.1 - 15.5 mi

Top 55%
×4story building
+66ft-88ft

Overall

14628

Males

10007

M50-54

10007

25K→30K

15.5 - 18.6 mi

Top 54%
×9story building
+181ft-148ft

Overall

14495

Males

9853

M50-54

9853

30K→20M

18.6 - 20.0 mi

Top 51%
×5story building
+64ft-50ft

Overall

13693

Males

9445

M50-54

9445

20M→21M

20.0 - 21.0 mi

Top 51%
×8story building
+106ft-24ft

Overall

13670

Males

9349

M50-54

9349

21M→35K

21.0 - 21.8 mi

Top 58%
×7story building
+17ft-86ft

Overall

15350

Males

10003

M50-54

10003

35K→23M

21.8 - 23.0 mi

Top 51%
×5story building
+23ft-63ft

Overall

13572

Males

9180

M50-54

9180

23M→24M

23.0 - 24.0 mi

Top 60%
×6story building
+12ft-82ft

Overall

16005

Males

10173

M50-54

10173

24M→40K

24.0 - 24.9 mi

Top 56%
×1story
+6ft-20ft

Overall

15020

Males

9693

M50-54

9693

40K→25.2M

24.9 - 25.2 mi

Top 77%
×1story
+13ft-16ft

Overall

20463

Males

12130

M50-54

12130

25.2M→Finish

25.2 - 26.2 mi

Top 51%
×2story building
+22ft-21ft

Overall

13601

Males

9060

M50-54

9060

Passing Analysis

Category:
Athletes Passed
2219
Passed By
1754
Net Change
+465
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15015
5K → 10K94472+872#15015#14143
10K → 15K48703-655#14143#14798
15K → 20K255115+140#14798#14658
20K → Half4023+17#14658#14641
Half → 25K147145+2#14641#14639
25K → 30K181135+46#14639#14593
30K → 20M13645+91#14593#14502
20M → 21M11658+58#14502#14444
21M → 35K3070-40#14444#14484
35K → 23M11946+73#14484#14411
23M → 24M59104-45#14411#14456
24M → 40K4966-17#14456#14473
40K → 25.2M5139-134#14473#14607
25.2M → Finish9033+57#14607#14550
TOTALS22191754+465
📊

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