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BOSTON MARATHON 2024

Chelsea Grogan

Bib: 9610•F

NJ

0:00
0:00
/ mi
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Overall
#0 / 25550
Top 43%
Gender (Female)
#0 / 10924
Top 30%
Division (F18-39)
#0 / 4660
Top 46%
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:00
Rank: #7568
Start → 5K
22:00 | 7:05/mi
10K· 6.21 mi
45:13
Rank: #8734 (-1166)
5K → 10K
23:13 | 7:28/mi
15K· 9.32 mi
1:08:58
Rank: #9343 (-609)
10K → 15K
23:45 | 7:39/mi
20K· 12.43 mi
1:33:36
Rank: #9876 (-533)
15K → 20K
24:38 | 7:56/mi
Half· 13.11 mi
1:39:03
Rank: #10043 (-167)
20K → Half
5:27 | 7:59/mi
25K· 15.53 mi
2:00:00
Rank: #10731 (-688)
Half → 25K
20:57 | 8:38/mi
30K· 18.64 mi
2:28:05
Rank: #11251 (-520)
25K → 30K
28:05 | 9:02/mi
20M
2:41:34
Rank: #11744 (-493)
30K → 20M
13:29 | 9:55/mi
21M
2:51:22
Rank: #11740 (+4)
20M → 21M
9:48 | 9:48/mi
35K· 21.75 mi
2:58:10
Rank: #11816 (-76)
21M → 35K
6:48 | 9:05/mi
23M
3:09:20
Rank: #11696 (+120)
35K → 23M
11:10 | 8:55/mi
24M
3:18:05
Rank: #11597 (+99)
23M → 24M
8:45 | 8:45/mi
40K· 24.85 mi
3:25:16
Rank: #11390 (+207)
24M → 40K
7:11 | 8:24/mi
25.2M
3:28:25
Rank: #11279 (+111)
40K → 25.2M
3:09 | 9:08/mi
Finish· 26.22 mi
3:36:19
Rank: #11065 (+214)
25.2M → Finish
7:54 | 7:45/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:03
Pace7:33 /mi
2nd Half
Distance13.11 mi
Time1:57:16
Pace8:57 /mi
📊Positive Split: 18.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:3722:007:0522:00
7:05
-
10K
6.21 mi11:10:5045:137:1723:13
7:28
+0:23
15K
9.32 mi11:34:351:08:587:2423:45
7:39
+0:11
20K
12.43 mi11:59:131:33:367:3224:38
7:56
+0:17
Half
13.11 mi12:04:401:39:037:335:27
7:59
+0:03
25K
15.53 mi12:25:372:00:007:4320:57
8:38
+0:39
30K
18.64 mi12:53:422:28:057:5728:05
9:02
+0:24
20M
20.00 mi13:07:112:41:348:0513:29
9:55
+0:53
21M
21.00 mi13:16:592:51:228:109:48
9:48
-0:07
35K
21.75 mi13:23:472:58:108:126:48
9:05
-0:43
23M
23.00 mi13:34:573:09:208:1411:10
8:55
-0:10
24M
24.00 mi13:43:423:18:058:158:45
8:45
-0:10
40K
24.85 mi13:50:533:25:168:167:11
8:24
-0:21
25.2M
25.20 mi13:54:023:28:258:163:09
9:08
+0:44
Finish
26.22 mi14:01:563:36:198:157:54
7:45
-1:23

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

7:05 /mi

Average Pace

8:15 /mi

Slowest Pace

9:55 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:46:57

49% of race

Time at Steady Pace

1:16:08

35% of race

Time at Slower Pace

33:14

15% of race

Average Pace: 8:15 /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 mi10:47:3722:007:0522:00
7:05
#7568
10K
6.21 mi11:10:5045:137:1723:13
7:28
#8734
15K
9.32 mi11:34:351:08:587:2423:45
7:39
#9343
20K
12.43 mi11:59:131:33:367:3224:38
7:56
#9876
Half
13.11 mi12:04:401:39:037:335:27
7:59
#10043
25K
15.53 mi12:25:372:00:007:4320:57
8:38
#10731
30K
18.64 mi12:53:422:28:057:5728:05
9:02
#11251
20M
20.00 mi13:07:112:41:348:0513:29
9:55
#11744
21M
21.00 mi13:16:592:51:228:109:48
9:48
#11740
35K
21.75 mi13:23:472:58:108:126:48
9:05
#11816
23M
23.00 mi13:34:573:09:208:1411:10
8:55
#11696
24M
24.00 mi13:43:423:18:058:158:45
8:45
#11597
40K
24.85 mi13:50:533:25:168:167:11
8:24
#11390
25.2M
25.20 mi13:54:023:28:258:163:09
9:08
#11279
Finish
26.22 mi14:01:563:36:198:157:54
7:45
#11065
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi75681021102110790(Top 42%)2579(Top 24%)2579(Top 55%)
10K6.21 mi3.10 mi8734-11661510-4891510-48910069(Top 39%)2137(Top 20%)2137(Top 46%)
15K9.32 mi3.11 mi9343-6091781-2711781-27110790(Top 42%)2579(Top 24%)2579(Top 55%)
20K12.43 mi3.11 mi9876-5332081-3002081-30011328(Top 44%)2977(Top 27%)2977(Top 64%)
Half13.11 mi0.68 mi10043-1672182-1012182-10112703(Top 50%)3710(Top 34%)3710(Top 80%)
25K15.53 mi2.42 mi10731-6882595-4132595-41313799(Top 54%)4495(Top 41%)4495(Top 96%)
30K18.64 mi3.11 mi11251-5202957-3622957-36213416(Top 53%)4514(Top 41%)4514(Top 97%)
20M20.00 mi1.36 mi11744-4933260-3033260-30316202(Top 63%)6310(Top 58%)6310(Top 135%)
21M21.00 mi1.00 mi11740+43326-663326-6612143(Top 48%)4327(Top 40%)4327(Top 93%)
35K21.75 mi0.75 mi11816-763396-703396-7013759(Top 54%)5188(Top 47%)5188(Top 111%)
23M23.00 mi1.25 mi11696+1203404-83404-810747(Top 42%)3771(Top 35%)3771(Top 81%)
24M24.00 mi1.00 mi11597+993402+23402+210865(Top 43%)3858(Top 35%)3858(Top 83%)
40K24.85 mi0.85 mi11390+2073331+713331+717890(Top 31%)2548(Top 23%)2548(Top 55%)
25.2M25.20 mi0.35 mi11279+1113300+313300+317261(Top 28%)2328(Top 21%)2328(Top 50%)
Finish26.22 mi1.02 mi11065+2143238+623238+627107(Top 28%)2174(Top 20%)2174(Top 47%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 42%
×21stories
+97ft-345ft

Overall

10790

Females

2579

F18-39

2579

5K→10K

3.1 - 6.2 mi

Top 39%
×5stories
+79ft-138ft

Overall

10069

Females

2137

F18-39

2137

10K→15K

6.2 - 9.3 mi

Top 42%
×3stories
+67ft-78ft

Overall

10790

Females

2579

F18-39

2579

15K→20K

9.3 - 12.4 mi

Top 44%
×5stories
+106ft-86ft

Overall

11328

Females

2977

F18-39

2977

20K→Half

12.4 - 13.1 mi

Top 50%
×2stories
+19ft-37ft

Overall

12703

Females

3710

F18-39

3710

Half→25K

13.1 - 15.5 mi

Top 54%
×4stories
+66ft-88ft

Overall

13799

Females

4495

F18-39

4495

25K→30K

15.5 - 18.6 mi

Top 53%
×9stories
+181ft-148ft

Overall

13416

Females

4514

F18-39

4514

30K→20M

18.6 - 20.0 mi

Top 63%
×5stories
+64ft-50ft

Overall

16202

Females

6310

F18-39

6310

20M→21M

20.0 - 21.0 mi

Top 48%
×8stories
+106ft-24ft

Overall

12143

Females

4327

F18-39

4327

21M→35K

21.0 - 21.8 mi

Top 54%
×7stories
+17ft-86ft

Overall

13759

Females

5188

F18-39

5188

35K→23M

21.8 - 23.0 mi

Top 42%
×5stories
+23ft-63ft

Overall

10747

Females

3771

F18-39

3771

23M→24M

23.0 - 24.0 mi

Top 43%
×6stories
+12ft-82ft

Overall

10865

Females

3858

F18-39

3858

24M→40K

24.0 - 24.9 mi

Top 31%
×1story
+6ft-20ft

Overall

7890

Females

2548

F18-39

2548

40K→25.2M

24.9 - 25.2 mi

Top 28%
×1story
+13ft-16ft

Overall

7261

Females

2328

F18-39

2328

25.2M→Finish

25.2 - 26.2 mi

Top 28%
×2stories
+22ft-21ft

Overall

7107

Females

2174

F18-39

2174

Passing Analysis

Category:
Athletes Passed
1521
Passed By
5014
Net Change
-3497
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7568
5K → 10K251191-1166#7568#8734
10K → 15K60669-609#8734#9343
15K → 20K89621-533#9343#9876
20K → Half5170-167#9876#10043
Half → 25K82769-688#10043#10731
25K → 30K136656-520#10731#11251
30K → 20M45538-493#11251#11744
20M → 21M132128+4#11744#11740
21M → 35K57133-76#11740#11816
35K → 23M19474+120#11816#11696
23M → 24M14445+99#11696#11597
24M → 40K2158+207#11597#11390
40K → 25.2M1132+111#11390#11279
25.2M → Finish22410+214#11279#11065
TOTALS15215014-3497
📊

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