Boston Marathon logo
BOSTON MARATHON 2024

Kassandra Tat

Bib: 29577•F

MA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 25550
Gender (Female)
#0 / 10924
Division (F18-39)
#0 / 4660
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
34:03
Rank: #24799
Start → 5K
34:03 | 10:58/mi
10K· 6.21 mi
1:08:14
Rank: #24527 (+272)
5K → 10K
34:11 | 11:00/mi
15K· 9.32 mi
1:42:40
Rank: #24310 (+217)
10K → 15K
34:26 | 11:05/mi
20K· 12.43 mi
2:17:56
Rank: #24027 (+283)
15K → 20K
35:16 | 11:21/mi
Half· 13.11 mi
2:25:26
Rank: #24012 (+15)
20K → Half
7:30 | 11:00/mi
25K· 15.53 mi
2:53:48
Rank: #23841 (+171)
Half → 25K
28:22 | 11:42/mi
30K· 18.64 mi
3:30:28
Rank: #23471 (+370)
25K → 30K
36:40 | 11:48/mi
20M
3:46:15
Rank: #23275 (+196)
30K → 20M
15:47 | 11:37/mi
21M
3:59:07
Rank: #23144 (+131)
20M → 21M
12:52 | 12:52/mi
35K· 21.75 mi
4:07:14
Rank: #23034 (+110)
21M → 35K
8:07 | 10:51/mi
23M
4:21:38
Rank: #22903 (+131)
35K → 23M
14:24 | 11:30/mi
24M
4:33:30
Rank: #22848 (+55)
23M → 24M
11:52 | 11:52/mi
40K· 24.85 mi
4:44:54
Rank: #22864 (-16)
24M → 40K
11:24 | 13:20/mi
25.2M
4:49:30
Rank: #22843 (+21)
40K → 25.2M
4:36 | 13:20/mi
Finish· 26.22 mi
5:00:11
Rank: #22780 (+63)
25.2M → Finish
10:41 | 10:29/mi

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:25:26
Pace11:06 /mi
2nd Half
Distance13.11 mi
Time2:34:45
Pace11:48 /mi
📊Positive Split: 6.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:56:2634:0310:5834:03
10:58
-
10K
6.21 mi12:30:371:08:1410:5934:11
11:00
+0:02
15K
9.32 mi13:05:031:42:4011:0134:26
11:05
+0:05
20K
12.43 mi13:40:192:17:5611:0635:16
11:21
+0:16
Half
13.11 mi13:47:492:25:2611:067:30
11:00
-0:21
25K
15.53 mi14:16:112:53:4811:1128:22
11:42
+0:42
30K
18.64 mi14:52:513:30:2811:1736:40
11:48
+0:06
20M
20.00 mi15:08:383:46:1511:1915:47
11:37
-0:11
21M
21.00 mi15:21:303:59:0711:2312:52
12:52
+1:15
35K
21.75 mi15:29:374:07:1411:228:07
10:51
-2:01
23M
23.00 mi15:44:014:21:3811:2314:24
11:30
+0:39
24M
24.00 mi15:55:534:33:3011:2411:52
11:52
+0:22
40K
24.85 mi16:07:174:44:5411:2811:24
13:20
+1:28
25.2M
25.20 mi16:11:534:49:3011:294:36
13:20
0:00
Finish
26.22 mi16:22:345:00:1111:2710:41
10:29
-2:51

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

10:29 /mi

Average Pace

11:27 /mi

Slowest Pace

13:20 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:34:32

31% of race

Time at Steady Pace

2:56:47

59% of race

Time at Slower Pace

28:52

10% of race

Average Pace: 11:27 /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 mi11:56:2634:0310:5834:03
10:58
#24799
10K
6.21 mi12:30:371:08:1410:5934:11
11:00
#24527
15K
9.32 mi13:05:031:42:4011:0134:26
11:05
#24310
20K
12.43 mi13:40:192:17:5611:0635:16
11:21
#24027
Half
13.11 mi13:47:492:25:2611:067:30
11:00
#24012
25K
15.53 mi14:16:112:53:4811:1128:22
11:42
#23841
30K
18.64 mi14:52:513:30:2811:1736:40
11:48
#23471
20M
20.00 mi15:08:383:46:1511:1915:47
11:37
#23275
21M
21.00 mi15:21:303:59:0711:2312:52
12:52
#23144
35K
21.75 mi15:29:374:07:1411:228:07
10:51
#23034
23M
23.00 mi15:44:014:21:3811:2314:24
11:30
#22903
24M
24.00 mi15:55:534:33:3011:2411:52
11:52
#22848
40K
24.85 mi16:07:174:44:5411:2811:24
13:20
#22864
25.2M
25.20 mi16:11:534:49:3011:294:36
13:20
#22843
Finish
26.22 mi16:22:345:00:1111:2710:41
10:29
#22780
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi24799104391043923823(Top 93%)9870(Top 90%)9870(Top 212%)
10K6.21 mi3.10 mi24527+27210267+17210267+17224283(Top 95%)10135(Top 93%)10135(Top 217%)
15K9.32 mi3.11 mi24310+21710139+12810139+12823823(Top 93%)9870(Top 90%)9870(Top 212%)
20K12.43 mi3.11 mi24027+2839981+1589981+15823194(Top 91%)9558(Top 87%)9558(Top 205%)
Half13.11 mi0.68 mi24012+159975+69975+623522(Top 92%)9791(Top 90%)9791(Top 210%)
25K15.53 mi2.42 mi23841+1719896+799896+7922715(Top 89%)9390(Top 86%)9390(Top 202%)
30K18.64 mi3.11 mi23471+3709743+1539743+15321584(Top 84%)8943(Top 82%)8943(Top 192%)
20M20.00 mi1.36 mi23275+1969671+729671+7220651(Top 81%)8575(Top 78%)8575(Top 184%)
21M21.00 mi1.00 mi23144+1319614+579614+5720515(Top 80%)8591(Top 79%)8591(Top 184%)
35K21.75 mi0.75 mi23034+1109566+489566+4819483(Top 76%)8075(Top 74%)8075(Top 173%)
23M23.00 mi1.25 mi22903+1319511+559511+5519657(Top 77%)8232(Top 75%)8232(Top 177%)
24M24.00 mi1.00 mi22848+559495+169495+1621195(Top 83%)9041(Top 83%)9041(Top 194%)
40K24.85 mi0.85 mi22864-169506-119506-1122767(Top 89%)9820(Top 90%)9820(Top 211%)
25.2M25.20 mi0.35 mi22843+219497+99497+920436(Top 80%)8747(Top 80%)8747(Top 188%)
Finish26.22 mi1.02 mi22780+639473+249473+2419994(Top 78%)8476(Top 78%)8476(Top 182%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 93%
×21stories
+97ft-345ft

Overall

23823

Females

9870

F18-39

9870

5K→10K

3.1 - 6.2 mi

Top 95%
×5stories
+79ft-138ft

Overall

24283

Females

10135

F18-39

10135

10K→15K

6.2 - 9.3 mi

Top 93%
×3stories
+67ft-78ft

Overall

23823

Females

9870

F18-39

9870

15K→20K

9.3 - 12.4 mi

Top 91%
×5stories
+106ft-86ft

Overall

23194

Females

9558

F18-39

9558

20K→Half

12.4 - 13.1 mi

Top 92%
×2stories
+19ft-37ft

Overall

23522

Females

9791

F18-39

9791

Half→25K

13.1 - 15.5 mi

Top 89%
×4stories
+66ft-88ft

Overall

22715

Females

9390

F18-39

9390

25K→30K

15.5 - 18.6 mi

Top 84%
×9stories
+181ft-148ft

Overall

21584

Females

8943

F18-39

8943

30K→20M

18.6 - 20.0 mi

Top 81%
×5stories
+64ft-50ft

Overall

20651

Females

8575

F18-39

8575

20M→21M

20.0 - 21.0 mi

Top 80%
×8stories
+106ft-24ft

Overall

20515

Females

8591

F18-39

8591

21M→35K

21.0 - 21.8 mi

Top 76%
×7stories
+17ft-86ft

Overall

19483

Females

8075

F18-39

8075

35K→23M

21.8 - 23.0 mi

Top 77%
×5stories
+23ft-63ft

Overall

19657

Females

8232

F18-39

8232

23M→24M

23.0 - 24.0 mi

Top 83%
×6stories
+12ft-82ft

Overall

21195

Females

9041

F18-39

9041

24M→40K

24.0 - 24.9 mi

Top 89%
×1story
+6ft-20ft

Overall

22767

Females

9820

F18-39

9820

40K→25.2M

24.9 - 25.2 mi

Top 80%
×1story
+13ft-16ft

Overall

20436

Females

8747

F18-39

8747

25.2M→Finish

25.2 - 26.2 mi

Top 78%
×2stories
+22ft-21ft

Overall

19994

Females

8476

F18-39

8476

Passing Analysis

Category:
Athletes Passed
2233
Passed By
214
Net Change
+2019
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24799
5K → 10K30634+272#24799#24527
10K → 15K24831+217#24527#24310
15K → 20K29613+283#24310#24027
20K → Half2914+15#24027#24012
Half → 25K19019+171#24012#23841
25K → 30K3766+370#23841#23471
30K → 20M1960+196#23471#23275
20M → 21M1409+131#23275#23144
21M → 35K1111+110#23144#23034
35K → 23M1343+131#23034#22903
23M → 24M6914+55#22903#22848
24M → 40K3854-16#22848#22864
40K → 25.2M287+21#22864#22843
25.2M → Finish729+63#22843#22780
TOTALS2233214+2019
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing