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BOSTON MARATHON 2023

Jennifer Cronin

Bib: 15720•F

FL

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 36%
Masters (Masters Women)
#0 / 6539
Top 23%
Division (F40-44)
#0 / 1878
Top 42%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:22
Rank: #15193
Start → 5K
8:10/mi
25:22 split
10K· 6.21 mi
50:39
Rank: #15466 (-273)
5K → 10K
8:08/mi
25:17 split
15K· 9.32 mi
1:15:58
Rank: #15490 (-24)
10K → 15K
8:09/mi
25:19 split
20K· 12.43 mi
1:41:19
Rank: #15272 (+218)
15K → 20K
8:10/mi
25:21 split
Half· 13.11 mi
1:46:49
Rank: #15236 (+36)
20K → Half
8:04/mi
5:30 split
25K· 15.53 mi
2:06:18
Rank: #14848 (+388)
Half → 25K
8:02/mi
19:29 split
30K· 18.64 mi
2:31:36
Rank: #14352 (+496)
25K → 30K
8:09/mi
25:18 split
20M
2:42:48
Rank: #14156 (+196)
30K → 20M
8:15/mi
11:12 split
21M
2:51:35
Rank: #13990 (+166)
20M → 21M
8:47/mi
8:47 split
35K· 21.75 mi
2:57:41
Rank: #13948 (+42)
21M → 35K
8:09/mi
6:06 split
23M
3:08:14
Rank: #13840 (+108)
35K → 23M
8:26/mi
10:33 split
24M
3:16:29
Rank: #13769 (+71)
23M → 24M
8:15/mi
8:15 split
40K· 24.85 mi
3:23:35
Rank: #13697 (+72)
24M → 40K
8:18/mi
7:06 split
25.2M
3:26:45
Rank: #13696 (+1)
40K → 25.2M
9:11/mi
3:10 split
Finish· 26.22 mi
3:35:16
Rank: #13708 (-12)
25.2M → Finish
8:21/mi
8:31 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:46:49
Pace8:09 /mi
2nd Half
Distance13.11 mi
Time1:48:27
Pace8:16 /mi
📊Positive Split: 1.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:56:3525:228:1025:22
8:10
-
10K
6.21 mi11:21:5250:398:0925:17
8:08
-0:02
15K
9.32 mi11:47:111:15:588:0925:19
8:09
+0:01
20K
12.43 mi12:12:321:41:198:0925:21
8:10
+0:01
Half
13.11 mi12:18:021:46:498:095:30
8:04
-0:06
25K
15.53 mi12:37:312:06:188:0819:29
8:02
-0:02
30K
18.64 mi13:02:492:31:368:0825:18
8:09
+0:07
20M
20.00 mi13:14:012:42:488:0811:12
8:15
+0:06
21M
21.00 mi13:22:482:51:358:108:47
8:47
+0:32
35K
21.75 mi13:28:542:57:418:106:06
8:09
-0:38
23M
23.00 mi13:39:273:08:148:1110:33
8:26
+0:17
24M
24.00 mi13:47:423:16:298:118:15
8:15
-0:11
40K
24.85 mi13:54:483:23:358:117:06
8:18
+0:03
25.2M
25.20 mi13:57:583:26:458:123:10
9:11
+0:53
Finish
26.22 mi14:06:293:35:168:138:31
8:21
-0:50

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

8:02 /mi

Average Pace

8:13 /mi

Slowest Pace

9:11 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:32:06

99% of race

Time at Steady Pace

3:10

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:13 /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 mi10:56:3525:228:1025:22
8:10
#15193
10K
6.21 mi11:21:5250:398:0925:17
8:08
#15466
15K
9.32 mi11:47:111:15:588:0925:19
8:09
#15490
20K
12.43 mi12:12:321:41:198:0925:21
8:10
#15272
Half
13.11 mi12:18:021:46:498:095:30
8:04
#15236
25K
15.53 mi12:37:312:06:188:0819:29
8:02
#14848
30K
18.64 mi13:02:492:31:368:0825:18
8:09
#14352
20M
20.00 mi13:14:012:42:488:0811:12
8:15
#14156
21M
21.00 mi13:22:482:51:358:108:47
8:47
#13990
35K
21.75 mi13:28:542:57:418:106:06
8:09
#13948
23M
23.00 mi13:39:273:08:148:1110:33
8:26
#13840
24M
24.00 mi13:47:423:16:298:118:15
8:15
#13769
40K
24.85 mi13:54:483:23:358:117:06
8:18
#13697
25.2M
25.20 mi13:57:583:26:458:123:10
9:11
#13696
Finish
26.22 mi14:06:293:35:168:138:31
8:21
#13708
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi151934765476515492(Top 58%)4973(Top 44%)4973(Top 265%)
10K6.21 mi3.10 mi15466-2734944-1794944-17915798(Top 59%)5140(Top 45%)5140(Top 274%)
15K9.32 mi3.11 mi15490-244972-284972-2815492(Top 58%)4973(Top 44%)4973(Top 265%)
20K12.43 mi3.11 mi15272+2184852+1204852+12014670(Top 55%)4503(Top 39%)4503(Top 240%)
Half13.11 mi0.68 mi15236+364835+174835+1714877(Top 56%)4597(Top 40%)4597(Top 245%)
25K15.53 mi2.42 mi14848+3884617+2184617+21813053(Top 49%)3660(Top 32%)3660(Top 195%)
30K18.64 mi3.11 mi14352+4964369+2484369+24811968(Top 45%)3174(Top 28%)3174(Top 169%)
20M20.00 mi1.36 mi14156+1964263+1064263+10611997(Top 45%)3283(Top 29%)3283(Top 175%)
21M21.00 mi1.00 mi13990+1664178+854178+8512192(Top 46%)3513(Top 31%)3513(Top 187%)
35K21.75 mi0.75 mi13948+424167+114167+1113184(Top 50%)4105(Top 36%)4105(Top 219%)
23M23.00 mi1.25 mi13840+1084126+414126+4112776(Top 48%)3955(Top 35%)3955(Top 211%)
24M24.00 mi1.00 mi13769+714113+134113+1312962(Top 49%)4114(Top 36%)4114(Top 219%)
40K24.85 mi0.85 mi13697+724082+314082+3112117(Top 46%)3742(Top 33%)3742(Top 199%)
25.2M25.20 mi0.35 mi13696+14087-54087-513595(Top 51%)4532(Top 40%)4532(Top 241%)
Finish26.22 mi1.02 mi13708-124118-314118-3114470(Top 54%)4978(Top 44%)4978(Top 265%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 58%
×21stories
+97ft-345ft

Overall

15492

Females

4973

F40-44

4973

5K→10K

3.1 - 6.2 mi

Top 59%
×5stories
+79ft-138ft

Overall

15798

Females

5140

F40-44

5140

10K→15K

6.2 - 9.3 mi

Top 58%
×3stories
+67ft-78ft

Overall

15492

Females

4973

F40-44

4973

15K→20K

9.3 - 12.4 mi

Top 55%
×5stories
+106ft-86ft

Overall

14670

Females

4503

F40-44

4503

20K→Half

12.4 - 13.1 mi

Top 56%
×2stories
+19ft-37ft

Overall

14877

Females

4597

F40-44

4597

Half→25K

13.1 - 15.5 mi

Top 49%
×4stories
+66ft-88ft

Overall

13053

Females

3660

F40-44

3660

25K→30K

15.5 - 18.6 mi

Top 45%
×9stories
+181ft-148ft

Overall

11968

Females

3174

F40-44

3174

30K→20M

18.6 - 20.0 mi

Top 45%
×5stories
+64ft-50ft

Overall

11997

Females

3283

F40-44

3283

20M→21M

20.0 - 21.0 mi

Top 46%
×8stories
+106ft-24ft

Overall

12192

Females

3513

F40-44

3513

21M→35K

21.0 - 21.8 mi

Top 50%
×7stories
+17ft-86ft

Overall

13184

Females

4105

F40-44

4105

35K→23M

21.8 - 23.0 mi

Top 48%
×5stories
+23ft-63ft

Overall

12776

Females

3955

F40-44

3955

23M→24M

23.0 - 24.0 mi

Top 49%
×6stories
+12ft-82ft

Overall

12962

Females

4114

F40-44

4114

24M→40K

24.0 - 24.9 mi

Top 46%
×1story
+6ft-20ft

Overall

12117

Females

3742

F40-44

3742

40K→25.2M

24.9 - 25.2 mi

Top 51%
×1story
+13ft-16ft

Overall

13595

Females

4532

F40-44

4532

25.2M→Finish

25.2 - 26.2 mi

Top 54%
×2stories
+22ft-21ft

Overall

14470

Females

4978

F40-44

4978

Passing Analysis

Category:
Athletes Passed
2507
Passed By
1022
Net Change
+1485
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15193
5K → 10K181454-273#15193#15466
10K → 15K173197-24#15466#15490
15K → 20K29173+218#15490#15272
20K → Half5418+36#15272#15236
Half → 25K39810+388#15236#14848
25K → 30K5048+496#14848#14352
30K → 20M20913+196#14352#14156
20M → 21M18519+166#14156#13990
21M → 35K7028+42#13990#13948
35K → 23M14133+108#13948#13840
23M → 24M10837+71#13840#13769
24M → 40K8917+72#13769#13697
40K → 25.2M4140+1#13697#13696
25.2M → Finish6375-12#13696#13708
TOTALS25071022+1485
📊

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