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BOSTON MARATHON 2024

Jess Chaffee

Bib: 9338•F

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0:00
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Overall
#0 / 25550
Top 28%
Gender (Female)
#0 / 10924
Top 13%
Division (F18-39)
#0 / 4660
Top 23%
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:35
Rank: #6729
Start → 5K
21:35 | 6:57/mi
10K· 6.21 mi
43:40
Rank: #7018 (-289)
5K → 10K
22:05 | 7:06/mi
15K· 9.32 mi
1:06:13
Rank: #7245 (-227)
10K → 15K
22:33 | 7:15/mi
20K· 12.43 mi
1:29:24
Rank: #7408 (-163)
15K → 20K
23:11 | 7:28/mi
Half· 13.11 mi
1:34:28
Rank: #7439 (-31)
20K → Half
5:04 | 7:26/mi
25K· 15.53 mi
1:53:14
Rank: #7534 (-95)
Half → 25K
18:46 | 7:44/mi
30K· 18.64 mi
2:18:09
Rank: #7533 (+1)
25K → 30K
24:55 | 8:01/mi
20M
2:29:28
Rank: #7537 (-4)
30K → 20M
11:19 | 8:20/mi
21M
2:38:15
Rank: #7484 (+53)
20M → 21M
8:47 | 8:47/mi
35K· 21.75 mi
2:44:07
Rank: #7395 (+89)
21M → 35K
5:52 | 7:51/mi
23M
2:55:42
Rank: #7639 (-244)
35K → 23M
11:35 | 9:15/mi
24M
3:03:33
Rank: #7485 (+154)
23M → 24M
7:51 | 7:51/mi
40K· 24.85 mi
3:10:22
Rank: #7339 (+146)
24M → 40K
6:49 | 7:58/mi
25.2M
3:13:23
Rank: #7260 (+79)
40K → 25.2M
3:01 | 8:45/mi
Finish· 26.22 mi
3:21:02
Rank: #7143 (+117)
25.2M → Finish
7:39 | 7:30/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:34:28
Pace7:12 /mi
2nd Half
Distance13.11 mi
Time1:46:34
Pace8:08 /mi
📊Positive Split: 12.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:3321:356:5721:35
6:57
-
10K
6.21 mi11:09:3843:407:0222:05
7:06
+0:09
15K
9.32 mi11:32:111:06:137:0622:33
7:15
+0:09
20K
12.43 mi11:55:221:29:247:1223:11
7:28
+0:13
Half
13.11 mi12:00:261:34:287:125:04
7:26
-0:02
25K
15.53 mi12:19:121:53:147:1718:46
7:44
+0:18
30K
18.64 mi12:44:072:18:097:2524:55
8:01
+0:17
20M
20.00 mi12:55:262:29:287:2811:19
8:20
+0:19
21M
21.00 mi13:04:132:38:157:328:47
8:47
+0:27
35K
21.75 mi13:10:052:44:077:335:52
7:51
-0:56
23M
23.00 mi13:21:402:55:427:3811:35
9:15
+1:24
24M
24.00 mi13:29:313:03:337:397:51
7:51
-1:24
40K
24.85 mi13:36:203:10:227:406:49
7:58
+0:07
25.2M
25.20 mi13:39:213:13:237:403:01
8:45
+0:47
Finish
26.22 mi13:47:003:21:027:407:39
7:30
-1:15

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

6:57 /mi

Average Pace

7:40 /mi

Slowest Pace

9:15 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:42:07

51% of race

Time at Steady Pace

1:04:13

32% of race

Time at Slower Pace

34:42

17% of race

Average Pace: 7:40 /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 mi10:47:3321:356:5721:35
6:57
#6729
10K
6.21 mi11:09:3843:407:0222:05
7:06
#7018
15K
9.32 mi11:32:111:06:137:0622:33
7:15
#7245
20K
12.43 mi11:55:221:29:247:1223:11
7:28
#7408
Half
13.11 mi12:00:261:34:287:125:04
7:26
#7439
25K
15.53 mi12:19:121:53:147:1718:46
7:44
#7534
30K
18.64 mi12:44:072:18:097:2524:55
8:01
#7533
20M
20.00 mi12:55:262:29:287:2811:19
8:20
#7537
21M
21.00 mi13:04:132:38:157:328:47
8:47
#7484
35K
21.75 mi13:10:052:44:077:335:52
7:51
#7395
23M
23.00 mi13:21:402:55:427:3811:35
9:15
#7639
24M
24.00 mi13:29:313:03:337:397:51
7:51
#7485
40K
24.85 mi13:36:203:10:227:406:49
7:58
#7339
25.2M
25.20 mi13:39:213:13:237:403:01
8:45
#7260
Finish
26.22 mi13:47:003:21:027:407:39
7:30
#7143
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi67297417417892(Top 31%)1214(Top 11%)1214(Top 26%)
10K6.21 mi3.10 mi7018-289849-108849-1087348(Top 29%)991(Top 9%)991(Top 21%)
15K9.32 mi3.11 mi7245-227940-91940-917892(Top 31%)1214(Top 11%)1214(Top 26%)
20K12.43 mi3.11 mi7408-1631031-911031-918118(Top 32%)1432(Top 13%)1432(Top 31%)
Half13.11 mi0.68 mi7439-311051-201051-208613(Top 34%)1622(Top 15%)1622(Top 35%)
25K15.53 mi2.42 mi7534-951112-611112-618561(Top 34%)1791(Top 16%)1791(Top 38%)
30K18.64 mi3.11 mi7533+11188-761188-767981(Top 31%)1757(Top 16%)1757(Top 38%)
20M20.00 mi1.36 mi7537-41233-451233-458537(Top 33%)2240(Top 21%)2240(Top 48%)
21M21.00 mi1.00 mi7484+531266-331266-337545(Top 30%)1965(Top 18%)1965(Top 42%)
35K21.75 mi0.75 mi7395+891260+61260+66849(Top 27%)1673(Top 15%)1673(Top 36%)
23M23.00 mi1.25 mi7639-2441425-1651425-16512380(Top 48%)4592(Top 42%)4592(Top 99%)
24M24.00 mi1.00 mi7485+1541406+191406+195851(Top 23%)1453(Top 13%)1453(Top 31%)
40K24.85 mi0.85 mi7339+1461389+171389+175682(Top 22%)1504(Top 14%)1504(Top 32%)
25.2M25.20 mi0.35 mi7260+791378+111378+115486(Top 21%)1480(Top 14%)1480(Top 32%)
Finish26.22 mi1.02 mi7143+1171367+111367+115680(Top 22%)1492(Top 14%)1492(Top 32%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 31%
×21stories
+97ft-345ft

Overall

7892

Females

1214

F18-39

1214

5K→10K

3.1 - 6.2 mi

Top 29%
×5stories
+79ft-138ft

Overall

7348

Females

991

F18-39

991

10K→15K

6.2 - 9.3 mi

Top 31%
×3stories
+67ft-78ft

Overall

7892

Females

1214

F18-39

1214

15K→20K

9.3 - 12.4 mi

Top 32%
×5stories
+106ft-86ft

Overall

8118

Females

1432

F18-39

1432

20K→Half

12.4 - 13.1 mi

Top 34%
×2stories
+19ft-37ft

Overall

8613

Females

1622

F18-39

1622

Half→25K

13.1 - 15.5 mi

Top 34%
×4stories
+66ft-88ft

Overall

8561

Females

1791

F18-39

1791

25K→30K

15.5 - 18.6 mi

Top 31%
×9stories
+181ft-148ft

Overall

7981

Females

1757

F18-39

1757

30K→20M

18.6 - 20.0 mi

Top 33%
×5stories
+64ft-50ft

Overall

8537

Females

2240

F18-39

2240

20M→21M

20.0 - 21.0 mi

Top 30%
×8stories
+106ft-24ft

Overall

7545

Females

1965

F18-39

1965

21M→35K

21.0 - 21.8 mi

Top 27%
×7stories
+17ft-86ft

Overall

6849

Females

1673

F18-39

1673

35K→23M

21.8 - 23.0 mi

Top 48%
×5stories
+23ft-63ft

Overall

12380

Females

4592

F18-39

4592

23M→24M

23.0 - 24.0 mi

Top 23%
×6stories
+12ft-82ft

Overall

5851

Females

1453

F18-39

1453

24M→40K

24.0 - 24.9 mi

Top 22%
×1story
+6ft-20ft

Overall

5682

Females

1504

F18-39

1504

40K→25.2M

24.9 - 25.2 mi

Top 21%
×1story
+13ft-16ft

Overall

5486

Females

1480

F18-39

1480

25.2M→Finish

25.2 - 26.2 mi

Top 22%
×2stories
+22ft-21ft

Overall

5680

Females

1492

F18-39

1492

Passing Analysis

Category:
Athletes Passed
1740
Passed By
2154
Net Change
-414
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6729
5K → 10K109398-289#6729#7018
10K → 15K85312-227#7018#7245
15K → 20K126289-163#7245#7408
20K → Half1950-31#7408#7439
Half → 25K147242-95#7439#7534
25K → 30K236235+1#7534#7533
30K → 20M123127-4#7533#7537
20M → 21M14693+53#7537#7484
21M → 35K11829+89#7484#7395
35K → 23M69313-244#7395#7639
23M → 24M17824+154#7639#7485
24M → 40K15913+146#7485#7339
40K → 25.2M867+79#7339#7260
25.2M → Finish13922+117#7260#7143
TOTALS17402154-414
📊

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