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BOSTON MARATHON 2023

Thomas Karisny

Bib: 25198•M

GA

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

Start
0:00:00
Race begins
5K· 3.11 mi
25:52
Rank: #16324
Start → 5K
25:52 | 8:20/mi
10K· 6.21 mi
52:45
Rank: #17840 (-1516)
5K → 10K
26:53 | 8:39/mi
15K· 9.32 mi
1:19:19
Rank: #17908 (-68)
10K → 15K
26:34 | 8:33/mi
20K· 12.43 mi
1:46:09
Rank: #17840 (+68)
15K → 20K
26:50 | 8:38/mi
Half· 13.11 mi
1:51:54
Rank: #17792 (+48)
20K → Half
5:45 | 8:26/mi
25K· 15.53 mi
2:13:13
Rank: #17791 (+1)
Half → 25K
21:19 | 8:48/mi
30K· 18.64 mi
2:41:06
Rank: #17618 (+173)
25K → 30K
27:53 | 8:58/mi
20M
2:53:27
Rank: #17559 (+59)
30K → 20M
12:21 | 9:05/mi
21M
3:03:22
Rank: #17577 (-18)
20M → 21M
9:55 | 9:55/mi
35K· 21.75 mi
3:10:11
Rank: #17607 (-30)
21M → 35K
6:49 | 9:07/mi
23M
3:23:19
Rank: #18005 (-398)
35K → 23M
13:08 | 10:29/mi
24M
3:32:50
Rank: #18084 (-79)
23M → 24M
9:31 | 9:31/mi
40K· 24.85 mi
3:41:00
Rank: #18114 (-30)
24M → 40K
8:10 | 9:33/mi
25.2M
3:44:50
Rank: #18185 (-71)
40K → 25.2M
3:50 | 11:07/mi
Finish· 26.22 mi
3:54:13
Rank: #18211 (-26)
25.2M → Finish
9:23 | 9:12/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:51:54
Pace8:32 /mi
2nd Half
Distance13.11 mi
Time2:02:19
Pace9:20 /mi
📊Positive Split: 9.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:41:2525:528:2025:52
8:20
-
10K
6.21 mi12:08:1852:458:2926:53
8:39
+0:19
15K
9.32 mi12:34:521:19:198:3126:34
8:33
-0:06
20K
12.43 mi13:01:421:46:098:3226:50
8:38
+0:05
Half
13.11 mi13:07:271:51:548:325:45
8:26
-0:12
25K
15.53 mi13:28:462:13:138:3521:19
8:48
+0:22
30K
18.64 mi13:56:392:41:068:3927:53
8:58
+0:10
20M
20.00 mi14:09:002:53:278:4012:21
9:05
+0:07
21M
21.00 mi14:18:553:03:228:449:55
9:55
+0:50
35K
21.75 mi14:25:443:10:118:456:49
9:07
-0:48
23M
23.00 mi14:38:523:23:198:5013:08
10:29
+1:22
24M
24.00 mi14:48:233:32:508:529:31
9:31
-0:58
40K
24.85 mi14:56:333:41:008:538:10
9:33
+0:02
25.2M
25.20 mi15:00:233:44:508:553:50
11:07
+1:34
Finish
26.22 mi15:09:463:54:138:569:23
9:12
-1:55

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

8:20 /mi

Average Pace

8:56 /mi

Slowest Pace

11:07 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:51:54

48% of race

Time at Steady Pace

1:17:45

33% of race

Time at Slower Pace

44:34

19% of race

Average Pace: 8:56 /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 mi11:41:2525:528:2025:52
8:20
#16324
10K
6.21 mi12:08:1852:458:2926:53
8:39
#17840
15K
9.32 mi12:34:521:19:198:3126:34
8:33
#17908
20K
12.43 mi13:01:421:46:098:3226:50
8:38
#17840
Half
13.11 mi13:07:271:51:548:325:45
8:26
#17792
25K
15.53 mi13:28:462:13:138:3521:19
8:48
#17791
30K
18.64 mi13:56:392:41:068:3927:53
8:58
#17618
20M
20.00 mi14:09:002:53:278:4012:21
9:05
#17559
21M
21.00 mi14:18:553:03:228:449:55
9:55
#17577
35K
21.75 mi14:25:443:10:118:456:49
9:07
#17607
23M
23.00 mi14:38:523:23:198:5013:08
10:29
#18005
24M
24.00 mi14:48:233:32:508:529:31
9:31
#18084
40K
24.85 mi14:56:333:41:008:538:10
9:33
#18114
25.2M
25.20 mi15:00:233:44:508:553:50
11:07
#18185
Finish
26.22 mi15:09:463:54:138:569:23
9:12
#18211
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi16324108231082318149(Top 68%)11540(Top 76%)11540(Top 562%)
10K6.21 mi3.10 mi17840-151611393-57011393-57019135(Top 72%)11950(Top 79%)11950(Top 582%)
15K9.32 mi3.11 mi17908-6811420-2711420-2718149(Top 68%)11540(Top 76%)11540(Top 562%)
20K12.43 mi3.11 mi17840+6811390+3011390+3017714(Top 67%)11345(Top 75%)11345(Top 553%)
Half13.11 mi0.68 mi17792+4811373+1711373+1717274(Top 65%)11205(Top 74%)11205(Top 546%)
25K15.53 mi2.42 mi17791+111357+1611357+1617902(Top 67%)11366(Top 75%)11366(Top 554%)
30K18.64 mi3.11 mi17618+17311267+9011267+9017029(Top 64%)10931(Top 72%)10931(Top 533%)
20M20.00 mi1.36 mi17559+5911228+3911228+3916983(Top 64%)10815(Top 71%)10815(Top 527%)
21M21.00 mi1.00 mi17577-1811213+1511213+1517704(Top 67%)11100(Top 73%)11100(Top 541%)
35K21.75 mi0.75 mi17607-3011215-211215-218361(Top 69%)11307(Top 75%)11307(Top 551%)
23M23.00 mi1.25 mi18005-39811372-15711372-15721283(Top 80%)12586(Top 83%)12586(Top 613%)
24M24.00 mi1.00 mi18084-7911385-1311385-1319258(Top 72%)11637(Top 77%)11637(Top 567%)
40K24.85 mi0.85 mi18114-3011388-311388-318491(Top 69%)11259(Top 74%)11259(Top 549%)
25.2M25.20 mi0.35 mi18185-7111416-2811416-2820683(Top 78%)12234(Top 81%)12234(Top 596%)
Finish26.22 mi1.02 mi18211-2611418-211418-218936(Top 71%)11504(Top 76%)11504(Top 561%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 68%
×21stories
+97ft-345ft

Overall

18149

Males

11540

M50-54

11540

5K→10K

3.1 - 6.2 mi

Top 72%
×5stories
+79ft-138ft

Overall

19135

Males

11950

M50-54

11950

10K→15K

6.2 - 9.3 mi

Top 68%
×3stories
+67ft-78ft

Overall

18149

Males

11540

M50-54

11540

15K→20K

9.3 - 12.4 mi

Top 67%
×5stories
+106ft-86ft

Overall

17714

Males

11345

M50-54

11345

20K→Half

12.4 - 13.1 mi

Top 65%
×2stories
+19ft-37ft

Overall

17274

Males

11205

M50-54

11205

Half→25K

13.1 - 15.5 mi

Top 67%
×4stories
+66ft-88ft

Overall

17902

Males

11366

M50-54

11366

25K→30K

15.5 - 18.6 mi

Top 64%
×9stories
+181ft-148ft

Overall

17029

Males

10931

M50-54

10931

30K→20M

18.6 - 20.0 mi

Top 64%
×5stories
+64ft-50ft

Overall

16983

Males

10815

M50-54

10815

20M→21M

20.0 - 21.0 mi

Top 67%
×8stories
+106ft-24ft

Overall

17704

Males

11100

M50-54

11100

21M→35K

21.0 - 21.8 mi

Top 69%
×7stories
+17ft-86ft

Overall

18361

Males

11307

M50-54

11307

35K→23M

21.8 - 23.0 mi

Top 80%
×5stories
+23ft-63ft

Overall

21283

Males

12586

M50-54

12586

23M→24M

23.0 - 24.0 mi

Top 72%
×6stories
+12ft-82ft

Overall

19258

Males

11637

M50-54

11637

24M→40K

24.0 - 24.9 mi

Top 69%
×1story
+6ft-20ft

Overall

18491

Males

11259

M50-54

11259

40K→25.2M

24.9 - 25.2 mi

Top 78%
×1story
+13ft-16ft

Overall

20683

Males

12234

M50-54

12234

25.2M→Finish

25.2 - 26.2 mi

Top 71%
×2stories
+22ft-21ft

Overall

18936

Males

11504

M50-54

11504

Passing Analysis

Category:
Athletes Passed
1229
Passed By
3116
Net Change
-1887
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16324
5K → 10K321548-1516#16324#17840
10K → 15K168236-68#17840#17908
15K → 20K200132+68#17908#17840
20K → Half6315+48#17840#17792
Half → 25K127126+1#17792#17791
25K → 30K26289+173#17791#17618
30K → 20M11152+59#17618#17559
20M → 21M85103-18#17559#17577
21M → 35K3969-30#17577#17607
35K → 23M24422-398#17607#18005
23M → 24M31110-79#18005#18084
24M → 40K3969-30#18084#18114
40K → 25.2M677-71#18114#18185
25.2M → Finish4268-26#18185#18211
TOTALS12293116-1887
📊

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