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BOSTON MARATHON 2024

Caitlin Groseclose

Bib: 15424•F

SC

0:00
0:00
/ mi
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Overall
#0 / 25550
Top 31%
Gender (Female)
#0 / 10924
Top 15%
Division (F18-39)
#0 / 4660
Top 28%
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:10
Rank: #12928
Start → 5K
24:10 | 7:47/mi
10K· 6.21 mi
48:30
Rank: #12921 (+7)
5K → 10K
24:20 | 7:50/mi
15K· 9.32 mi
1:12:34
Rank: #12407 (+514)
10K → 15K
24:04 | 7:45/mi
20K· 12.43 mi
1:36:34
Rank: #11682 (+725)
15K → 20K
24:00 | 7:43/mi
Half· 13.11 mi
1:41:48
Rank: #11596 (+86)
20K → Half
5:14 | 7:40/mi
25K· 15.53 mi
2:00:35
Rank: #11024 (+572)
Half → 25K
18:47 | 7:45/mi
30K· 18.64 mi
2:24:55
Rank: #10064 (+960)
25K → 30K
24:20 | 7:50/mi
20M
2:35:26
Rank: #9584 (+480)
30K → 20M
10:31 | 7:44/mi
21M
2:43:20
Rank: #9081 (+503)
20M → 21M
7:54 | 7:54/mi
35K· 21.75 mi
2:49:01
Rank: #8889 (+192)
21M → 35K
5:41 | 7:36/mi
23M
2:58:44
Rank: #8526 (+363)
35K → 23M
9:43 | 7:46/mi
24M
3:06:17
Rank: #8253 (+273)
23M → 24M
7:33 | 7:33/mi
40K· 24.85 mi
3:12:57
Rank: #8056 (+197)
24M → 40K
6:40 | 7:48/mi
25.2M
3:15:53
Rank: #7946 (+110)
40K → 25.2M
2:56 | 8:30/mi
Finish· 26.22 mi
3:23:46
Rank: #7852 (+94)
25.2M → Finish
7:53 | 7:44/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:41:48
Pace7:46 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:41:58
Pace7:47 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:57:5624:107:4724:10
7:47
-
10K
6.21 mi11:22:1648:307:4824:20
7:50
+0:03
15K
9.32 mi11:46:201:12:347:4724:04
7:45
-0:05
20K
12.43 mi12:10:201:36:347:4624:00
7:43
-0:02
Half
13.11 mi12:15:341:41:487:465:14
7:40
-0:03
25K
15.53 mi12:34:212:00:357:4618:47
7:45
+0:05
30K
18.64 mi12:58:412:24:557:4624:20
7:50
+0:05
20M
20.00 mi13:09:122:35:267:4610:31
7:44
-0:06
21M
21.00 mi13:17:062:43:207:477:54
7:54
+0:10
35K
21.75 mi13:22:472:49:017:465:41
7:36
-0:18
23M
23.00 mi13:32:302:58:447:469:43
7:46
+0:10
24M
24.00 mi13:40:033:06:177:467:33
7:33
-0:13
40K
24.85 mi13:46:433:12:577:466:40
7:48
+0:15
25.2M
25.20 mi13:49:393:15:537:462:56
8:30
+0:42
Finish
26.22 mi13:57:323:23:467:477:53
7:44
-0:46

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

7:33 /mi

Average Pace

7:47 /mi

Slowest Pace

8:30 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:20:50

99% of race

Time at Steady Pace

2:56

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:46 /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 mi10:57:5624:107:4724:10
7:47
#12928
10K
6.21 mi11:22:1648:307:4824:20
7:50
#12921
15K
9.32 mi11:46:201:12:347:4724:04
7:45
#12407
20K
12.43 mi12:10:201:36:347:4624:00
7:43
#11682
Half
13.11 mi12:15:341:41:487:465:14
7:40
#11596
25K
15.53 mi12:34:212:00:357:4618:47
7:45
#11024
30K
18.64 mi12:58:412:24:557:4624:20
7:50
#10064
20M
20.00 mi13:09:122:35:267:4610:31
7:44
#9584
21M
21.00 mi13:17:062:43:207:477:54
7:54
#9081
35K
21.75 mi13:22:472:49:017:465:41
7:36
#8889
23M
23.00 mi13:32:302:58:447:469:43
7:46
#8526
24M
24.00 mi13:40:033:06:177:467:33
7:33
#8253
40K
24.85 mi13:46:433:12:577:466:40
7:48
#8056
25.2M
25.20 mi13:49:393:15:537:462:56
8:30
#7946
Finish
26.22 mi13:57:323:23:467:477:53
7:44
#7852
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi129283681368111531(Top 45%)2974(Top 27%)2974(Top 64%)
10K6.21 mi3.10 mi12921+73683-23683-212919(Top 51%)3713(Top 34%)3713(Top 80%)
15K9.32 mi3.11 mi12407+5143410+2733410+27311531(Top 45%)2974(Top 27%)2974(Top 64%)
20K12.43 mi3.11 mi11682+7253044+3663044+3669920(Top 39%)2283(Top 21%)2283(Top 49%)
Half13.11 mi0.68 mi11596+862995+492995+4910384(Top 41%)2474(Top 23%)2474(Top 53%)
25K15.53 mi2.42 mi11024+5722736+2592736+2598619(Top 34%)1825(Top 17%)1825(Top 39%)
30K18.64 mi3.11 mi10064+9602349+3872349+3876916(Top 27%)1319(Top 12%)1319(Top 28%)
20M20.00 mi1.36 mi9584+4802170+1792170+1795436(Top 21%)910(Top 8%)910(Top 20%)
21M21.00 mi1.00 mi9081+5031981+1891981+1893831(Top 15%)504(Top 5%)504(Top 11%)
35K21.75 mi0.75 mi8889+1921922+591922+595596(Top 22%)1142(Top 10%)1142(Top 25%)
23M23.00 mi1.25 mi8526+3631820+1021820+1024652(Top 18%)864(Top 8%)864(Top 19%)
24M24.00 mi1.00 mi8253+2731740+801740+804366(Top 17%)829(Top 8%)829(Top 18%)
40K24.85 mi0.85 mi8056+1971699+411699+414793(Top 19%)1116(Top 10%)1116(Top 24%)
25.2M25.20 mi0.35 mi7946+1101669+301669+304546(Top 18%)1058(Top 10%)1058(Top 23%)
Finish26.22 mi1.02 mi7852+941673-41673-46975(Top 27%)2102(Top 19%)2102(Top 45%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 45%
×21stories
+97ft-345ft

Overall

11531

Females

2974

F18-39

2974

5K→10K

3.1 - 6.2 mi

Top 51%
×5stories
+79ft-138ft

Overall

12919

Females

3713

F18-39

3713

10K→15K

6.2 - 9.3 mi

Top 45%
×3stories
+67ft-78ft

Overall

11531

Females

2974

F18-39

2974

15K→20K

9.3 - 12.4 mi

Top 39%
×5stories
+106ft-86ft

Overall

9920

Females

2283

F18-39

2283

20K→Half

12.4 - 13.1 mi

Top 41%
×2stories
+19ft-37ft

Overall

10384

Females

2474

F18-39

2474

Half→25K

13.1 - 15.5 mi

Top 34%
×4stories
+66ft-88ft

Overall

8619

Females

1825

F18-39

1825

25K→30K

15.5 - 18.6 mi

Top 27%
×9stories
+181ft-148ft

Overall

6916

Females

1319

F18-39

1319

30K→20M

18.6 - 20.0 mi

Top 21%
×5stories
+64ft-50ft

Overall

5436

Females

910

F18-39

910

20M→21M

20.0 - 21.0 mi

Top 15%
×8stories
+106ft-24ft

Overall

3831

Females

504

F18-39

504

21M→35K

21.0 - 21.8 mi

Top 22%
×7stories
+17ft-86ft

Overall

5596

Females

1142

F18-39

1142

35K→23M

21.8 - 23.0 mi

Top 18%
×5stories
+23ft-63ft

Overall

4652

Females

864

F18-39

864

23M→24M

23.0 - 24.0 mi

Top 17%
×6stories
+12ft-82ft

Overall

4366

Females

829

F18-39

829

24M→40K

24.0 - 24.9 mi

Top 19%
×1story
+6ft-20ft

Overall

4793

Females

1116

F18-39

1116

40K→25.2M

24.9 - 25.2 mi

Top 18%
×1story
+13ft-16ft

Overall

4546

Females

1058

F18-39

1058

25.2M→Finish

25.2 - 26.2 mi

Top 27%
×2stories
+22ft-21ft

Overall

6975

Females

2102

F18-39

2102

Passing Analysis

Category:
Athletes Passed
5479*
Passed By
403
Net Change
+5076
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12928
5K → 10K301294+7#12928#12921
10K → 15K55440+514#12921#12407
15K → 20K7316+725#12407#11682
20K → Half937+86#11682#11596
Half → 25K5775+572#11596#11024
25K → 30K9633+960#11024#10064
30K → 20M481*1+480#10064#9584
20M → 21M5041+503#9584#9081
21M → 35K1964+192#9081#8889
35K → 23M3652+363#8889#8526
23M → 24M2774+273#8526#8253
24M → 40K2003+197#8253#8056
40K → 25.2M1100+110#8056#7946
25.2M → Finish12733+94#7946#7852
TOTALS5479*403+5076

* 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