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BOSTON MARATHON 2024

Tammy Chow

Bib: 12849•F

MA

0:00
0:00
/ mi
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Overall
#0 / 25550
Top 28%
Gender (Female)
#0 / 10924
Top 12%
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
23:09
Rank: #10358
Start → 5K
23:09 | 7:27/mi
10K· 6.21 mi
46:18
Rank: #10050 (+308)
5K → 10K
23:09 | 7:27/mi
15K· 9.32 mi
1:09:21
Rank: #9668 (+382)
10K → 15K
23:03 | 7:25/mi
20K· 12.43 mi
1:32:29
Rank: #9187 (+481)
15K → 20K
23:08 | 7:27/mi
Half· 13.11 mi
1:37:25
Rank: #9071 (+116)
20K → Half
4:56 | 7:14/mi
25K· 15.53 mi
1:55:26
Rank: #8560 (+511)
Half → 25K
18:01 | 7:26/mi
30K· 18.64 mi
2:19:22
Rank: #7980 (+580)
25K → 30K
23:56 | 7:42/mi
20M
2:30:10
Rank: #7821 (+159)
30K → 20M
10:48 | 7:57/mi
21M
2:38:34
Rank: #7580 (+241)
20M → 21M
8:24 | 8:24/mi
35K· 21.75 mi
2:44:27
Rank: #7503 (+77)
21M → 35K
5:53 | 7:52/mi
23M
2:54:52
Rank: #7400 (+103)
35K → 23M
10:25 | 8:19/mi
24M
3:02:58
Rank: #7321 (+79)
23M → 24M
8:06 | 8:06/mi
40K· 24.85 mi
3:09:56
Rank: #7226 (+95)
24M → 40K
6:58 | 8:09/mi
25.2M
3:13:04
Rank: #7190 (+36)
40K → 25.2M
3:08 | 9:05/mi
Finish· 26.22 mi
3:20:58
Rank: #7128 (+62)
25.2M → Finish
7:54 | 7:45/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:37:25
Pace7:26 /mi
2nd Half
Distance13.11 mi
Time1:43:33
Pace7:54 /mi
📊Positive Split: 6.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:5523:097:2723:09
7:27
-
10K
6.21 mi11:15:0446:187:2723:09
7:27
0:00
15K
9.32 mi11:38:071:09:217:2623:03
7:25
-0:02
20K
12.43 mi12:01:151:32:297:2723:08
7:27
+0:02
Half
13.11 mi12:06:111:37:257:264:56
7:14
-0:13
25K
15.53 mi12:24:121:55:267:2618:01
7:26
+0:12
30K
18.64 mi12:48:082:19:227:2923:56
7:42
+0:16
20M
20.00 mi12:58:562:30:107:3010:48
7:57
+0:15
21M
21.00 mi13:07:202:38:347:338:24
8:24
+0:27
35K
21.75 mi13:13:132:44:277:345:53
7:52
-0:32
23M
23.00 mi13:23:382:54:527:3610:25
8:19
+0:27
24M
24.00 mi13:31:443:02:587:378:06
8:06
-0:13
40K
24.85 mi13:38:423:09:567:396:58
8:09
+0:03
25.2M
25.20 mi13:41:503:13:047:403:08
9:05
+0:56
Finish
26.22 mi13:49:443:20:587:407:54
7:45
-1:20

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

7:14 /mi

Average Pace

7:40 /mi

Slowest Pace

9:05 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:55:26

57% of race

Time at Steady Pace

48:31

24% of race

Time at Slower Pace

37:01

18% 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 mi10:51:5523:097:2723:09
7:27
#10358
10K
6.21 mi11:15:0446:187:2723:09
7:27
#10050
15K
9.32 mi11:38:071:09:217:2623:03
7:25
#9668
20K
12.43 mi12:01:151:32:297:2723:08
7:27
#9187
Half
13.11 mi12:06:111:37:257:264:56
7:14
#9071
25K
15.53 mi12:24:121:55:267:2618:01
7:26
#8560
30K
18.64 mi12:48:082:19:227:2923:56
7:42
#7980
20M
20.00 mi12:58:562:30:107:3010:48
7:57
#7821
21M
21.00 mi13:07:202:38:347:338:24
8:24
#7580
35K
21.75 mi13:13:132:44:277:345:53
7:52
#7503
23M
23.00 mi13:23:382:54:527:3610:25
8:19
#7400
24M
24.00 mi13:31:443:02:587:378:06
8:06
#7321
40K
24.85 mi13:38:423:09:567:396:58
8:09
#7226
25.2M
25.20 mi13:41:503:13:047:403:08
9:05
#7190
Finish
26.22 mi13:49:443:20:587:407:54
7:45
#7128
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi10358220322039037(Top 35%)1707(Top 16%)1707(Top 37%)
10K6.21 mi3.10 mi10050+3082066+1372066+1379865(Top 39%)2033(Top 19%)2033(Top 44%)
15K9.32 mi3.11 mi9668+3821941+1251941+1259037(Top 35%)1707(Top 16%)1707(Top 37%)
20K12.43 mi3.11 mi9187+4811757+1841757+1847989(Top 31%)1380(Top 13%)1380(Top 30%)
Half13.11 mi0.68 mi9071+1161710+471710+477239(Top 28%)1087(Top 10%)1087(Top 23%)
25K15.53 mi2.42 mi8560+5111524+1861524+1866606(Top 26%)1014(Top 9%)1014(Top 22%)
30K18.64 mi3.11 mi7980+5801393+1311393+1316174(Top 24%)1042(Top 10%)1042(Top 22%)
20M20.00 mi1.36 mi7821+1591362+311362+316479(Top 25%)1322(Top 12%)1322(Top 28%)
21M21.00 mi1.00 mi7580+2411307+551307+555794(Top 23%)1212(Top 11%)1212(Top 26%)
35K21.75 mi0.75 mi7503+771310-31310-36978(Top 27%)1734(Top 16%)1734(Top 37%)
23M23.00 mi1.25 mi7400+1031321-111321-117472(Top 29%)2121(Top 19%)2121(Top 46%)
24M24.00 mi1.00 mi7321+791331-101331-107193(Top 28%)2083(Top 19%)2083(Top 45%)
40K24.85 mi0.85 mi7226+951340-91340-96537(Top 26%)1895(Top 17%)1895(Top 41%)
25.2M25.20 mi0.35 mi7190+361345-51345-56959(Top 27%)2139(Top 20%)2139(Top 46%)
Finish26.22 mi1.02 mi7128+621360-151360-157076(Top 28%)2143(Top 20%)2143(Top 46%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 35%
×21stories
+97ft-345ft

Overall

9037

Females

1707

F18-39

1707

5K→10K

3.1 - 6.2 mi

Top 39%
×5stories
+79ft-138ft

Overall

9865

Females

2033

F18-39

2033

10K→15K

6.2 - 9.3 mi

Top 35%
×3stories
+67ft-78ft

Overall

9037

Females

1707

F18-39

1707

15K→20K

9.3 - 12.4 mi

Top 31%
×5stories
+106ft-86ft

Overall

7989

Females

1380

F18-39

1380

20K→Half

12.4 - 13.1 mi

Top 28%
×2stories
+19ft-37ft

Overall

7239

Females

1087

F18-39

1087

Half→25K

13.1 - 15.5 mi

Top 26%
×4stories
+66ft-88ft

Overall

6606

Females

1014

F18-39

1014

25K→30K

15.5 - 18.6 mi

Top 24%
×9stories
+181ft-148ft

Overall

6174

Females

1042

F18-39

1042

30K→20M

18.6 - 20.0 mi

Top 25%
×5stories
+64ft-50ft

Overall

6479

Females

1322

F18-39

1322

20M→21M

20.0 - 21.0 mi

Top 23%
×8stories
+106ft-24ft

Overall

5794

Females

1212

F18-39

1212

21M→35K

21.0 - 21.8 mi

Top 27%
×7stories
+17ft-86ft

Overall

6978

Females

1734

F18-39

1734

35K→23M

21.8 - 23.0 mi

Top 29%
×5stories
+23ft-63ft

Overall

7472

Females

2121

F18-39

2121

23M→24M

23.0 - 24.0 mi

Top 28%
×6stories
+12ft-82ft

Overall

7193

Females

2083

F18-39

2083

24M→40K

24.0 - 24.9 mi

Top 26%
×1story
+6ft-20ft

Overall

6537

Females

1895

F18-39

1895

40K→25.2M

24.9 - 25.2 mi

Top 27%
×1story
+13ft-16ft

Overall

6959

Females

2139

F18-39

2139

25.2M→Finish

25.2 - 26.2 mi

Top 28%
×2stories
+22ft-21ft

Overall

7076

Females

2143

F18-39

2143

Passing Analysis

Category:
Athletes Passed
3774*
Passed By
544
Net Change
+3230
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10358
5K → 10K436*128+308#10358#10050
10K → 15K430*48+382#10050#9668
15K → 20K49817+481#9668#9187
20K → Half1182+116#9187#9071
Half → 25K5176+511#9071#8560
25K → 30K61030+580#8560#7980
30K → 20M19637+159#7980#7821
20M → 21M26524+241#7821#7580
21M → 35K11336+77#7580#7503
35K → 23M17471+103#7503#7400
23M → 24M13051+79#7400#7321
24M → 40K12429+95#7321#7226
40K → 25.2M5822+36#7226#7190
25.2M → Finish10543+62#7190#7128
TOTALS3774*544+3230

* 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