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BOSTON MARATHON 2023

Kristin Selesnick

Bib: 25333•F

NH

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Division (F18-39)
#0 / 4884
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:17
Rank: #17298
Start → 5K
8:28/mi
26:17 split
10K· 6.21 mi
52:01
Rank: #17012 (+286)
5K → 10K
8:17/mi
25:44 split
15K· 9.32 mi
1:19:07
Rank: #17778 (-766)
10K → 15K
8:43/mi
27:06 split
20K· 12.43 mi
1:45:35
Rank: #17538 (+240)
15K → 20K
8:31/mi
26:28 split
Half· 13.11 mi
1:51:27
Rank: #17583 (-45)
20K → Half
8:36/mi
5:52 split
25K· 15.53 mi
2:13:24
Rank: #17877 (-294)
Half → 25K
9:03/mi
21:57 split
30K· 18.64 mi
2:42:30
Rank: #18092 (-215)
25K → 30K
9:22/mi
29:06 split
20M
2:54:39
Rank: #17921 (+171)
30K → 20M
8:56/mi
12:09 split
21M
3:04:03
Rank: #17762 (+159)
20M → 21M
9:24/mi
9:24 split
35K· 21.75 mi
3:10:56
Rank: #17820 (-58)
21M → 35K
9:12/mi
6:53 split
23M
3:22:19
Rank: #17753 (+67)
35K → 23M
9:05/mi
11:23 split
24M
3:31:03
Rank: #17675 (+78)
23M → 24M
8:44/mi
8:44 split
40K· 24.85 mi
3:38:25
Rank: #17542 (+133)
24M → 40K
8:37/mi
7:22 split
25.2M
3:41:28
Rank: #17443 (+99)
40K → 25.2M
8:51/mi
3:03 split
Finish· 26.22 mi
3:49:27
Rank: #17228 (+215)
25.2M → Finish
7:50/mi
7:59 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:51:27
Pace8:30 /mi
2nd Half
Distance13.11 mi
Time1:58:00
Pace9:00 /mi
📊Positive Split: 5.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:42:3426:178:2826:17
8:28
-
10K
6.21 mi12:08:1852:018:2225:44
8:17
-0:11
15K
9.32 mi12:35:241:19:078:2927:06
8:43
+0:26
20K
12.43 mi13:01:521:45:358:3026:28
8:31
-0:12
Half
13.11 mi13:07:441:51:278:305:52
8:36
+0:05
25K
15.53 mi13:29:412:13:248:3521:57
9:03
+0:27
30K
18.64 mi13:58:472:42:308:4329:06
9:22
+0:19
20M
20.00 mi14:10:562:54:398:4412:09
8:56
-0:26
21M
21.00 mi14:20:203:04:038:469:24
9:24
+0:28
35K
21.75 mi14:27:133:10:568:476:53
9:12
-0:12
23M
23.00 mi14:38:363:22:198:4811:23
9:05
-0:07
24M
24.00 mi14:47:203:31:038:488:44
8:44
-0:21
40K
24.85 mi14:54:423:38:258:477:22
8:37
-0:07
25.2M
25.20 mi14:57:453:41:288:473:03
8:51
+0:14
Finish
26.22 mi15:05:443:49:278:457:59
7:50
-1:01

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

7:50 /mi

Average Pace

8:45 /mi

Slowest Pace

9:24 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:32:20

40% of race

Time at Steady Pace

1:38:37

43% of race

Time at Slower Pace

38:30

17% of race

Average Pace: 8:45 /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 mi11:42:3426:178:2826:17
8:28
#17298
10K
6.21 mi12:08:1852:018:2225:44
8:17
#17012
15K
9.32 mi12:35:241:19:078:2927:06
8:43
#17778
20K
12.43 mi13:01:521:45:358:3026:28
8:31
#17538
Half
13.11 mi13:07:441:51:278:305:52
8:36
#17583
25K
15.53 mi13:29:412:13:248:3521:57
9:03
#17877
30K
18.64 mi13:58:472:42:308:4329:06
9:22
#18092
20M
20.00 mi14:10:562:54:398:4412:09
8:56
#17921
21M
21.00 mi14:20:203:04:038:469:24
9:24
#17762
35K
21.75 mi14:27:133:10:568:476:53
9:12
#17820
23M
23.00 mi14:38:363:22:198:4811:23
9:05
#17753
24M
24.00 mi14:47:203:31:038:488:44
8:44
#17675
40K
24.85 mi14:54:423:38:258:477:22
8:37
#17542
25.2M
25.20 mi14:57:453:41:288:473:03
8:51
#17443
Finish
26.22 mi15:05:443:49:278:457:59
7:50
#17228
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi172986130613019108(Top 72%)7168(Top 63%)7168(Top 147%)
10K6.21 mi3.10 mi17012+2865926+2045926+20416835(Top 63%)5773(Top 51%)5773(Top 118%)
15K9.32 mi3.11 mi17778-7666390-4646390-46419108(Top 72%)7168(Top 63%)7168(Top 147%)
20K12.43 mi3.11 mi17538+2406242+1486242+14816991(Top 64%)5925(Top 52%)5925(Top 121%)
Half13.11 mi0.68 mi17583-456273-316273-3118405(Top 69%)6739(Top 59%)6739(Top 138%)
25K15.53 mi2.42 mi17877-2946466-1936466-19319232(Top 72%)7269(Top 64%)7269(Top 149%)
30K18.64 mi3.11 mi18092-2156623-1576623-15718893(Top 71%)7142(Top 63%)7142(Top 146%)
20M20.00 mi1.36 mi17921+1716540+836540+8316262(Top 61%)5733(Top 50%)5733(Top 117%)
21M21.00 mi1.00 mi17762+1596447+936447+9315517(Top 58%)5372(Top 47%)5372(Top 110%)
35K21.75 mi0.75 mi17820-586492-456492-4518797(Top 71%)7287(Top 64%)7287(Top 149%)
23M23.00 mi1.25 mi17753+676474+186474+1816533(Top 62%)6051(Top 53%)6051(Top 124%)
24M24.00 mi1.00 mi17675+786440+346440+3415897(Top 60%)5762(Top 50%)5762(Top 118%)
40K24.85 mi0.85 mi17542+1336368+726368+7214113(Top 53%)4823(Top 42%)4823(Top 99%)
25.2M25.20 mi0.35 mi17443+996316+526316+5211749(Top 44%)3643(Top 32%)3643(Top 75%)
Finish26.22 mi1.02 mi17228+2156200+1166200+11611001(Top 41%)3208(Top 28%)3208(Top 66%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 72%
×21stories
+97ft-345ft

Overall

19108

Females

7168

F18-39

7168

5K→10K

3.1 - 6.2 mi

Top 63%
×5stories
+79ft-138ft

Overall

16835

Females

5773

F18-39

5773

10K→15K

6.2 - 9.3 mi

Top 72%
×3stories
+67ft-78ft

Overall

19108

Females

7168

F18-39

7168

15K→20K

9.3 - 12.4 mi

Top 64%
×5stories
+106ft-86ft

Overall

16991

Females

5925

F18-39

5925

20K→Half

12.4 - 13.1 mi

Top 69%
×2stories
+19ft-37ft

Overall

18405

Females

6739

F18-39

6739

Half→25K

13.1 - 15.5 mi

Top 72%
×4stories
+66ft-88ft

Overall

19232

Females

7269

F18-39

7269

25K→30K

15.5 - 18.6 mi

Top 71%
×9stories
+181ft-148ft

Overall

18893

Females

7142

F18-39

7142

30K→20M

18.6 - 20.0 mi

Top 61%
×5stories
+64ft-50ft

Overall

16262

Females

5733

F18-39

5733

20M→21M

20.0 - 21.0 mi

Top 58%
×8stories
+106ft-24ft

Overall

15517

Females

5372

F18-39

5372

21M→35K

21.0 - 21.8 mi

Top 71%
×7stories
+17ft-86ft

Overall

18797

Females

7287

F18-39

7287

35K→23M

21.8 - 23.0 mi

Top 62%
×5stories
+23ft-63ft

Overall

16533

Females

6051

F18-39

6051

23M→24M

23.0 - 24.0 mi

Top 60%
×6stories
+12ft-82ft

Overall

15897

Females

5762

F18-39

5762

24M→40K

24.0 - 24.9 mi

Top 53%
×1story
+6ft-20ft

Overall

14113

Females

4823

F18-39

4823

40K→25.2M

24.9 - 25.2 mi

Top 44%
×1story
+13ft-16ft

Overall

11749

Females

3643

F18-39

3643

25.2M→Finish

25.2 - 26.2 mi

Top 41%
×2stories
+22ft-21ft

Overall

11001

Females

3208

F18-39

3208

Passing Analysis

Category:
Athletes Passed
2110
Passed By
2040
Net Change
+70
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17298
5K → 10K488202+286#17298#17012
10K → 15K49815-766#17012#17778
15K → 20K30363+240#17778#17538
20K → Half2671-45#17538#17583
Half → 25K48342-294#17583#17877
25K → 30K120335-215#17877#18092
30K → 20M18716+171#18092#17921
20M → 21M17213+159#17921#17762
21M → 35K3795-58#17762#17820
35K → 23M11548+67#17820#17753
23M → 24M10224+78#17753#17675
24M → 40K1429+133#17675#17542
40K → 25.2M1023+99#17542#17443
25.2M → Finish2194+215#17443#17228
TOTALS21102040+70
📊

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