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BOSTON MARATHON 2023

Cynthia Slinsky

Bib: 17827•F

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Top 42%
Division (F40-44)
#0 / 1878
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:21
Rank: #17442
Start → 5K
26:21 | 8:29/mi
10K· 6.21 mi
52:20
Rank: #17368 (+74)
5K → 10K
25:59 | 8:22/mi
15K· 9.32 mi
1:18:18
Rank: #17204 (+164)
10K → 15K
25:58 | 8:21/mi
20K· 12.43 mi
1:44:38
Rank: #17067 (+137)
15K → 20K
26:20 | 8:29/mi
Half· 13.11 mi
1:50:25
Rank: #17107 (-40)
20K → Half
5:47 | 8:29/mi
25K· 15.53 mi
2:11:38
Rank: #17183 (-76)
Half → 25K
21:13 | 8:45/mi
30K· 18.64 mi
2:39:25
Rank: #17067 (+116)
25K → 30K
27:47 | 8:57/mi
20M
2:51:36
Rank: #17001 (+66)
30K → 20M
12:11 | 8:58/mi
21M
3:00:56
Rank: #16895 (+106)
20M → 21M
9:20 | 9:20/mi
35K· 21.75 mi
3:07:28
Rank: #16882 (+13)
21M → 35K
6:32 | 8:44/mi
23M
3:18:55
Rank: #16864 (+18)
35K → 23M
11:27 | 9:09/mi
24M
3:27:46
Rank: #16861 (+3)
23M → 24M
8:51 | 8:51/mi
40K· 24.85 mi
3:35:22
Rank: #16795 (+66)
24M → 40K
7:36 | 8:53/mi
25.2M
3:38:41
Rank: #16763 (+32)
40K → 25.2M
3:19 | 9:37/mi
Finish· 26.22 mi
3:47:21
Rank: #16710 (+53)
25.2M → Finish
8:40 | 8:30/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:50:25
Pace8:25 /mi
2nd Half
Distance13.11 mi
Time1:56:56
Pace8:55 /mi
📊Positive Split: 5.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:23:3326:218:2926:21
8:29
-
10K
6.21 mi11:49:3252:208:2525:59
8:22
-0:07
15K
9.32 mi12:15:301:18:188:2425:58
8:21
-0:01
20K
12.43 mi12:41:501:44:388:2526:20
8:29
+0:08
Half
13.11 mi12:47:371:50:258:255:47
8:29
0:00
25K
15.53 mi13:08:502:11:388:2821:13
8:45
+0:16
30K
18.64 mi13:36:372:39:258:3327:47
8:57
+0:12
20M
20.00 mi13:48:482:51:368:3512:11
8:58
+0:01
21M
21.00 mi13:58:083:00:568:379:20
9:20
+0:22
35K
21.75 mi14:04:403:07:288:376:32
8:44
-0:36
23M
23.00 mi14:16:073:18:558:3911:27
9:09
+0:25
24M
24.00 mi14:24:583:27:468:398:51
8:51
-0:18
40K
24.85 mi14:32:343:35:228:407:36
8:53
+0:02
25.2M
25.20 mi14:35:533:38:418:413:19
9:37
+0:44
Finish
26.22 mi14:44:333:47:218:418:40
8:30
-1:07

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

8:21 /mi

Average Pace

8:41 /mi

Slowest Pace

9:37 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:34:42

94% of race

Time at Steady Pace

12:39

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:40 /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 mi11:23:3326:218:2926:21
8:29
#17442
10K
6.21 mi11:49:3252:208:2525:59
8:22
#17368
15K
9.32 mi12:15:301:18:188:2425:58
8:21
#17204
20K
12.43 mi12:41:501:44:388:2526:20
8:29
#17067
Half
13.11 mi12:47:371:50:258:255:47
8:29
#17107
25K
15.53 mi13:08:502:11:388:2821:13
8:45
#17183
30K
18.64 mi13:36:372:39:258:3327:47
8:57
#17067
20M
20.00 mi13:48:482:51:368:3512:11
8:58
#17001
21M
21.00 mi13:58:083:00:568:379:20
9:20
#16895
35K
21.75 mi14:04:403:07:288:376:32
8:44
#16882
23M
23.00 mi14:16:073:18:558:3911:27
9:09
#16864
24M
24.00 mi14:24:583:27:468:398:51
8:51
#16861
40K
24.85 mi14:32:343:35:228:407:36
8:53
#16795
25.2M
25.20 mi14:35:533:38:418:413:19
9:37
#16763
Finish
26.22 mi14:44:333:47:218:418:40
8:30
#16710
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi174426216621616911(Top 64%)5853(Top 51%)5853(Top 312%)
10K6.21 mi3.10 mi17368+746144+726144+7217339(Top 65%)6087(Top 53%)6087(Top 324%)
15K9.32 mi3.11 mi17204+1646035+1096035+10916911(Top 64%)5853(Top 51%)5853(Top 312%)
20K12.43 mi3.11 mi17067+1375972+635972+6316715(Top 63%)5768(Top 50%)5768(Top 307%)
Half13.11 mi0.68 mi17107-405991-195991-1917608(Top 66%)6245(Top 55%)6245(Top 333%)
25K15.53 mi2.42 mi17183-766052-616052-6117675(Top 66%)6383(Top 56%)6383(Top 340%)
30K18.64 mi3.11 mi17067+1166006+466006+4616886(Top 63%)6000(Top 53%)6000(Top 319%)
20M20.00 mi1.36 mi17001+665970+365970+3616369(Top 61%)5794(Top 51%)5794(Top 309%)
21M21.00 mi1.00 mi16895+1065923+475923+4715209(Top 57%)5181(Top 45%)5181(Top 276%)
35K21.75 mi0.75 mi16882+135922+15922+116613(Top 62%)6053(Top 53%)6053(Top 322%)
23M23.00 mi1.25 mi16864+185942-205942-2016787(Top 63%)6179(Top 54%)6179(Top 329%)
24M24.00 mi1.00 mi16861+35960-185960-1816511(Top 62%)6087(Top 53%)6087(Top 324%)
40K24.85 mi0.85 mi16795+665940+205940+2015585(Top 59%)5630(Top 49%)5630(Top 300%)
25.2M25.20 mi0.35 mi16763+325930+105930+1015798(Top 59%)5754(Top 50%)5754(Top 306%)
Finish26.22 mi1.02 mi16710+535909+215909+2115479(Top 58%)5526(Top 48%)5526(Top 294%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 64%
×21stories
+97ft-345ft

Overall

16911

Females

5853

F40-44

5853

5K→10K

3.1 - 6.2 mi

Top 65%
×5stories
+79ft-138ft

Overall

17339

Females

6087

F40-44

6087

10K→15K

6.2 - 9.3 mi

Top 64%
×3stories
+67ft-78ft

Overall

16911

Females

5853

F40-44

5853

15K→20K

9.3 - 12.4 mi

Top 63%
×5stories
+106ft-86ft

Overall

16715

Females

5768

F40-44

5768

20K→Half

12.4 - 13.1 mi

Top 66%
×2stories
+19ft-37ft

Overall

17608

Females

6245

F40-44

6245

Half→25K

13.1 - 15.5 mi

Top 66%
×4stories
+66ft-88ft

Overall

17675

Females

6383

F40-44

6383

25K→30K

15.5 - 18.6 mi

Top 63%
×9stories
+181ft-148ft

Overall

16886

Females

6000

F40-44

6000

30K→20M

18.6 - 20.0 mi

Top 61%
×5stories
+64ft-50ft

Overall

16369

Females

5794

F40-44

5794

20M→21M

20.0 - 21.0 mi

Top 57%
×8stories
+106ft-24ft

Overall

15209

Females

5181

F40-44

5181

21M→35K

21.0 - 21.8 mi

Top 62%
×7stories
+17ft-86ft

Overall

16613

Females

6053

F40-44

6053

35K→23M

21.8 - 23.0 mi

Top 63%
×5stories
+23ft-63ft

Overall

16787

Females

6179

F40-44

6179

23M→24M

23.0 - 24.0 mi

Top 62%
×6stories
+12ft-82ft

Overall

16511

Females

6087

F40-44

6087

24M→40K

24.0 - 24.9 mi

Top 59%
×1story
+6ft-20ft

Overall

15585

Females

5630

F40-44

5630

40K→25.2M

24.9 - 25.2 mi

Top 59%
×1story
+13ft-16ft

Overall

15798

Females

5754

F40-44

5754

25.2M→Finish

25.2 - 26.2 mi

Top 58%
×2stories
+22ft-21ft

Overall

15479

Females

5526

F40-44

5526

Passing Analysis

Category:
Athletes Passed
1892
Passed By
1160
Net Change
+732
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17442
5K → 10K348274+74#17442#17368
10K → 15K279115+164#17368#17204
15K → 20K245108+137#17204#17067
20K → Half2060-40#17067#17107
Half → 25K98174-76#17107#17183
25K → 30K222106+116#17183#17067
30K → 20M11145+66#17067#17001
20M → 21M13832+106#17001#16895
21M → 35K5138+13#16895#16882
35K → 23M9274+18#16882#16864
23M → 24M6461+3#16864#16861
24M → 40K9226+66#16861#16795
40K → 25.2M397+32#16795#16763
25.2M → Finish9340+53#16763#16710
TOTALS18921160+732
📊

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