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BOSTON MARATHON 2023

Kristyn Cosgrove

Bib: 12191•F

CA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 31%
Gender (Female)
#0 / 11423
Top 11%
Division (F18-39)
#0 / 4884
Top 21%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:02
Rank: #11772
Start → 5K
24:02 | 7:44/mi
10K· 6.21 mi
47:52
Rank: #11843 (-71)
5K → 10K
23:50 | 7:40/mi
15K· 9.32 mi
1:11:43
Rank: #11730 (+113)
10K → 15K
23:51 | 7:41/mi
20K· 12.43 mi
1:35:30
Rank: #11384 (+346)
15K → 20K
23:47 | 7:39/mi
Half· 13.11 mi
1:40:41
Rank: #11364 (+20)
20K → Half
5:11 | 7:36/mi
25K· 15.53 mi
1:59:01
Rank: #10995 (+369)
Half → 25K
18:20 | 7:34/mi
30K· 18.64 mi
2:21:38
Rank: #9956 (+1039)
25K → 30K
22:37 | 7:17/mi
20M
2:31:19
Rank: #9496 (+460)
30K → 20M
9:41 | 7:08/mi
21M
2:38:50
Rank: #9127 (+369)
20M → 21M
7:31 | 7:31/mi
35K· 21.75 mi
2:43:59
Rank: #8935 (+192)
21M → 35K
5:09 | 6:53/mi
23M
2:53:04
Rank: #8661 (+274)
35K → 23M
9:05 | 7:15/mi
24M
3:00:04
Rank: #8423 (+238)
23M → 24M
7:00 | 7:00/mi
40K· 24.85 mi
3:06:17
Rank: #8276 (+147)
24M → 40K
6:13 | 7:16/mi
25.2M
3:08:59
Rank: #8215 (+61)
40K → 25.2M
2:42 | 7:50/mi
Finish· 26.22 mi
3:16:25
Rank: #8141 (+74)
25.2M → Finish
7:26 | 7:18/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:40:41
Pace7:41 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:35:44
Pace7:18 /mi
📊Negative Split: 4.9% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:5624:027:4424:02
7:44
-
10K
6.21 mi11:15:4647:527:4223:50
7:40
-0:04
15K
9.32 mi11:39:371:11:437:4223:51
7:41
+0:01
20K
12.43 mi12:03:241:35:307:4123:47
7:39
-0:02
Half
13.11 mi12:08:351:40:417:415:11
7:36
-0:03
25K
15.53 mi12:26:551:59:017:4018:20
7:34
-0:02
30K
18.64 mi12:49:322:21:387:3622:37
7:17
-0:17
20M
20.00 mi12:59:132:31:197:349:41
7:08
-0:09
21M
21.00 mi13:06:442:38:507:347:31
7:31
+0:23
35K
21.75 mi13:11:532:43:597:325:09
6:53
-0:38
23M
23.00 mi13:20:582:53:047:319:05
7:15
+0:22
24M
24.00 mi13:27:583:00:047:307:00
7:00
-0:15
40K
24.85 mi13:34:113:06:177:306:13
7:16
+0:16
25.2M
25.20 mi13:36:533:08:597:302:42
7:50
+0:34
Finish
26.22 mi13:44:193:16:257:307:26
7:18
-0:32

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

6:53 /mi

Average Pace

7:30 /mi

Slowest Pace

7:50 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:33:02

47% of race

Time at Steady Pace

1:43:23

53% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:29 /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 mi10:51:5624:027:4424:02
7:44
#11772
10K
6.21 mi11:15:4647:527:4223:50
7:40
#11843
15K
9.32 mi11:39:371:11:437:4223:51
7:41
#11730
20K
12.43 mi12:03:241:35:307:4123:47
7:39
#11384
Half
13.11 mi12:08:351:40:417:415:11
7:36
#11364
25K
15.53 mi12:26:551:59:017:4018:20
7:34
#10995
30K
18.64 mi12:49:322:21:387:3622:37
7:17
#9956
20M
20.00 mi12:59:132:31:197:349:41
7:08
#9496
21M
21.00 mi13:06:442:38:507:347:31
7:31
#9127
35K
21.75 mi13:11:532:43:597:325:09
6:53
#8935
23M
23.00 mi13:20:582:53:047:319:05
7:15
#8661
24M
24.00 mi13:27:583:00:047:307:00
7:00
#8423
40K
24.85 mi13:34:113:06:177:306:13
7:16
#8276
25.2M
25.20 mi13:36:533:08:597:302:42
7:50
#8215
Finish
26.22 mi13:44:193:16:257:307:26
7:18
#8141
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi117722728272811643(Top 44%)2694(Top 24%)2694(Top 55%)
10K6.21 mi3.10 mi11843-712783-552783-5511991(Top 45%)2862(Top 25%)2862(Top 59%)
15K9.32 mi3.11 mi11730+1132745+382745+3811643(Top 44%)2694(Top 24%)2694(Top 55%)
20K12.43 mi3.11 mi11384+3462542+2032542+20310560(Top 40%)2171(Top 19%)2171(Top 44%)
Half13.11 mi0.68 mi11364+202542254211003(Top 41%)2345(Top 21%)2345(Top 48%)
25K15.53 mi2.42 mi10995+3692349+1932349+1939254(Top 35%)1654(Top 14%)1654(Top 34%)
30K18.64 mi3.11 mi9956+10391873+4761873+4765925(Top 22%)601(Top 5%)601(Top 12%)
20M20.00 mi1.36 mi9496+4601703+1701703+1704768(Top 18%)417(Top 4%)417(Top 9%)
21M21.00 mi1.00 mi9127+3691586+1171586+1174703(Top 18%)454(Top 4%)454(Top 9%)
35K21.75 mi0.75 mi8935+1921512+741512+744741(Top 18%)458(Top 4%)458(Top 9%)
23M23.00 mi1.25 mi8661+2741431+811431+815105(Top 19%)566(Top 5%)566(Top 12%)
24M24.00 mi1.00 mi8423+2381360+711360+714714(Top 18%)502(Top 4%)502(Top 10%)
40K24.85 mi0.85 mi8276+1471330+301330+305303(Top 20%)762(Top 7%)762(Top 16%)
25.2M25.20 mi0.35 mi8215+611318+121318+125629(Top 21%)942(Top 8%)942(Top 19%)
Finish26.22 mi1.02 mi8141+741304+141304+147122(Top 27%)1469(Top 13%)1469(Top 30%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 44%
×21stories
+97ft-345ft

Overall

11643

Females

2694

F18-39

2694

5K→10K

3.1 - 6.2 mi

Top 45%
×5stories
+79ft-138ft

Overall

11991

Females

2862

F18-39

2862

10K→15K

6.2 - 9.3 mi

Top 44%
×3stories
+67ft-78ft

Overall

11643

Females

2694

F18-39

2694

15K→20K

9.3 - 12.4 mi

Top 40%
×5stories
+106ft-86ft

Overall

10560

Females

2171

F18-39

2171

20K→Half

12.4 - 13.1 mi

Top 41%
×2stories
+19ft-37ft

Overall

11003

Females

2345

F18-39

2345

Half→25K

13.1 - 15.5 mi

Top 35%
×4stories
+66ft-88ft

Overall

9254

Females

1654

F18-39

1654

25K→30K

15.5 - 18.6 mi

Top 22%
×9stories
+181ft-148ft

Overall

5925

Females

601

F18-39

601

30K→20M

18.6 - 20.0 mi

Top 18%
×5stories
+64ft-50ft

Overall

4768

Females

417

F18-39

417

20M→21M

20.0 - 21.0 mi

Top 18%
×8stories
+106ft-24ft

Overall

4703

Females

454

F18-39

454

21M→35K

21.0 - 21.8 mi

Top 18%
×7stories
+17ft-86ft

Overall

4741

Females

458

F18-39

458

35K→23M

21.8 - 23.0 mi

Top 19%
×5stories
+23ft-63ft

Overall

5105

Females

566

F18-39

566

23M→24M

23.0 - 24.0 mi

Top 18%
×6stories
+12ft-82ft

Overall

4714

Females

502

F18-39

502

24M→40K

24.0 - 24.9 mi

Top 20%
×1story
+6ft-20ft

Overall

5303

Females

762

F18-39

762

40K→25.2M

24.9 - 25.2 mi

Top 21%
×1story
+13ft-16ft

Overall

5629

Females

942

F18-39

942

25.2M→Finish

25.2 - 26.2 mi

Top 27%
×2stories
+22ft-21ft

Overall

7122

Females

1469

F18-39

1469

Passing Analysis

Category:
Athletes Passed
4189*
Passed By
558
Net Change
+3631
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11772
5K → 10K270341-71#11772#11843
10K → 15K240127+113#11843#11730
15K → 20K37529+346#11730#11384
20K → Half4222+20#11384#11364
Half → 25K3745+369#11364#10995
25K → 30K1039*0+1039#10995#9956
30K → 20M4600+460#9956#9496
20M → 21M3690+369#9496#9127
21M → 35K1920+192#9127#8935
35K → 23M2762+274#8935#8661
23M → 24M2391+238#8661#8423
24M → 40K1503+147#8423#8276
40K → 25.2M632+61#8276#8215
25.2M → Finish10026+74#8215#8141
TOTALS4189*558+3631

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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