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BOSTON MARATHON 2026

Cathy Khuu

Bib: 19621•F

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Overall
#0 / 29021
Gender (Female)
#0 / 12578
Age Group (F18-39)
#0 / 5716
Race Day Weather
51°/41°F
overcast clouds

Race Timeline and Course Information

Your journey through the course with elevation, pacing, and checkpoint details

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K
25:18
3.11 mi
Rank: #17881
Start → 5K
25:18 | 8:09/mi
10K
50:50
6.21 mi
Rank: #18298 (-417)
5K → 10K
25:32 | 8:14/mi
15K
1:16:20
9.32 mi
Rank: #18326 (-28)
10K → 15K
25:30 | 8:13/mi
20K
1:41:59
12.43 mi
Rank: #18207 (+119)
15K → 20K
25:39 | 8:16/mi
HALF
1:47:33
13.11 mi
Rank: #18194 (+13)
20K → HALF
5:34 | 8:10/mi
25K
2:07:37
15.53 mi
Rank: #18044 (+150)
HALF → 25K
20:04 | 8:17/mi
30K
2:34:45
18.64 mi
Rank: #18038 (+6)
25K → 30K
27:08 | 8:45/mi
20M
2:48:13
20.00 mi
Rank: #18457 (-419)
30K → 20M
13:28 | 9:55/mi
21M
2:58:57
21.00 mi
Rank: #18777 (-320)
20M → 21M
10:44 | 10:44/mi
35K
3:06:17
21.75 mi
Rank: #19003 (-226)
21M → 35K
7:20 | 9:49/mi
23M
3:18:24
23.00 mi
Rank: #19200 (-197)
35K → 23M
12:07 | 9:41/mi
24M
3:27:18
24.00 mi
Rank: #19182 (+18)
23M → 24M
8:54 | 8:54/mi
40K
3:35:05
24.85 mi
Rank: #19163 (+19)
24M → 40K
7:47 | 9:07/mi
25.2M
3:38:22
25.20 mi
Rank: #19137 (+26)
40K → 25.2M
3:17 | 9:32/mi
FINISH
3:46:54
26.22 mi
Rank: #19058 (+79)
25.2M → FINISH
8:32 | 8:23/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:47:33
Pace8:13 /mi
2nd Half
Distance13.11 mi
Time1:59:21
Pace9:07 /mi
📊Positive Split: 11.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:10:0325:188:0925:18
8:09
-
10K
6.21 mi11:35:3550:508:1125:32
8:14
+0:05
15K
9.32 mi12:01:051:16:208:1225:30
8:13
-0:01
20K
12.43 mi12:26:441:41:598:1325:39
8:16
+0:03
HALF
13.11 mi12:32:181:47:338:135:34
8:10
-0:06
25K
15.53 mi12:52:222:07:378:1320:04
8:17
+0:07
30K
18.64 mi13:19:302:34:458:1927:08
8:45
+0:28
20M
20.00 mi13:32:582:48:138:2513:28
9:55
+1:10
21M
21.00 mi13:43:422:58:578:3210:44
10:44
+0:49
35K
21.75 mi13:51:023:06:178:347:20
9:49
-0:55
23M
23.00 mi14:03:093:18:248:3812:07
9:41
-0:08
24M
24.00 mi14:12:033:27:188:398:54
8:54
-0:47
40K
24.85 mi14:19:503:35:058:407:47
9:07
+0:13
25.2M
25.20 mi14:23:073:38:228:403:17
9:32
+0:25
FINISH
26.22 mi14:31:393:46:548:408:32
8:23
-1:09

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

📈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

8:09 /mi

Average Pace

8:40 /mi

Slowest Pace

10:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

2:07:37

56% of race

Time at Steady Pace

52:21

23% of race

Time at Slower Pace

46:56

21% of race

Average Pace: 8:39 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:10:0325:188:0925:18
8:09
#17881
10K
6.21 mi11:35:3550:508:1125:32
8:14
#18298
15K
9.32 mi12:01:051:16:208:1225:30
8:13
#18326
20K
12.43 mi12:26:441:41:598:1325:39
8:16
#18207
HALF
13.11 mi12:32:181:47:338:135:34
8:10
#18194
25K
15.53 mi12:52:222:07:378:1320:04
8:17
#18044
30K
18.64 mi13:19:302:34:458:1927:08
8:45
#18038
20M
20.00 mi13:32:582:48:138:2513:28
9:55
#18457
21M
21.00 mi13:43:422:58:578:3210:44
10:44
#18777
35K
21.75 mi13:51:023:06:178:347:20
9:49
#19003
23M
23.00 mi14:03:093:18:248:3812:07
9:41
#19200
24M
24.00 mi14:12:033:27:188:398:54
8:54
#19182
40K
24.85 mi14:19:503:35:058:407:47
9:07
#19163
25.2M
25.20 mi14:23:073:38:228:403:17
9:32
#19137
FINISH
26.22 mi14:31:393:46:548:408:32
8:23
#19058
Faster pace
Steady pace
Slower pace

Rankings

Your position at each checkpoint and how you ranked in each segment

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi178816442644218399(Top 63%)6702(Top 53%)6702(Top 117%)
10K6.21 mi3.10 mi18298-4176666-2246666-22418688(Top 64%)6846(Top 54%)6846(Top 120%)
15K9.32 mi3.11 mi18326-286666666618399(Top 63%)6702(Top 53%)6702(Top 117%)
20K12.43 mi3.11 mi18207+1196599+676599+6717848(Top 62%)6427(Top 51%)6427(Top 112%)
HALF13.11 mi0.68 mi18194+136593+66593+618267(Top 63%)6640(Top 53%)6640(Top 116%)
25K15.53 mi2.42 mi18044+1506520+736520+7317303(Top 60%)6170(Top 49%)6170(Top 108%)
30K18.64 mi3.11 mi18038+66560-406560-4018226(Top 63%)6805(Top 54%)6805(Top 119%)
20M20.00 mi1.36 mi18457-4196818-2586818-25822336(Top 77%)9026(Top 72%)9026(Top 158%)
21M21.00 mi1.00 mi18777-3207016-1987016-19822494(Top 78%)9144(Top 73%)9144(Top 160%)
35K21.75 mi0.75 mi19003-2267152-1367152-13622632(Top 78%)9270(Top 74%)9270(Top 162%)
23M23.00 mi1.25 mi19200-1977282-1307282-13021203(Top 73%)8577(Top 68%)8577(Top 150%)
24M24.00 mi1.00 mi19182+187298-167298-1619034(Top 66%)7536(Top 60%)7536(Top 132%)
40K24.85 mi0.85 mi19163+197304-67304-618898(Top 65%)7520(Top 60%)7520(Top 132%)
25.2M25.20 mi0.35 mi19137+267296+87296+817485(Top 60%)6773(Top 54%)6773(Top 118%)
FINISH26.22 mi1.02 mi19058+797266+307266+3017497(Top 60%)6783(Top 54%)6783(Top 119%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 63%
×21
+97ft-345ft

Overall

18399

Females

6702

F18-39

6702

5K→10K

3.1 - 6.2 mi

Top 64%
×5
+79ft-138ft

Overall

18688

Females

6846

F18-39

6846

10K→15K

6.2 - 9.3 mi

Top 63%
×3
+67ft-78ft

Overall

18399

Females

6702

F18-39

6702

15K→20K

9.3 - 12.4 mi

Top 62%
×5
+106ft-86ft

Overall

17848

Females

6427

F18-39

6427

20K→HALF

12.4 - 13.1 mi

Top 63%
×2
+19ft-37ft

Overall

18267

Females

6640

F18-39

6640

HALF→25K

13.1 - 15.5 mi

Top 60%
×4
+66ft-88ft

Overall

17303

Females

6170

F18-39

6170

25K→30K

15.5 - 18.6 mi

Top 63%
×9
+181ft-148ft

Overall

18226

Females

6805

F18-39

6805

30K→20M

18.6 - 20.0 mi

Top 77%
×5
+64ft-50ft

Overall

22336

Females

9026

F18-39

9026

20M→21M

20.0 - 21.0 mi

Top 78%
×8
+106ft-24ft

Overall

22494

Females

9144

F18-39

9144

21M→35K

21.0 - 21.8 mi

Top 78%
×7
+17ft-86ft

Overall

22632

Females

9270

F18-39

9270

35K→23M

21.8 - 23.0 mi

Top 73%
×5
+23ft-63ft

Overall

21203

Females

8577

F18-39

8577

23M→24M

23.0 - 24.0 mi

Top 66%
×6
+12ft-82ft

Overall

19034

Females

7536

F18-39

7536

24M→40K

24.0 - 24.9 mi

Top 65%
×1
+6ft-20ft

Overall

18898

Females

7520

F18-39

7520

40K→25.2M

24.9 - 25.2 mi

Top 60%
×1
+13ft-16ft

Overall

17485

Females

6773

F18-39

6773

25.2M→FINISH

25.2 - 26.2 mi

Top 60%
×2
+22ft-21ft

Overall

17497

Females

6783

F18-39

6783

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1342
Passed By
2519
Net Change
-1177
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17881
5K → 10K130547-417#17881#18298
10K → 15K166194-28#18298#18326
15K → 20K222103+119#18326#18207
20K → HALF3421+13#18207#18194
HALF → 25K19444+150#18194#18044
25K → 30K189183+6#18044#18038
30K → 20M34453-419#18038#18457
20M → 21M20340-320#18457#18777
21M → 35K20246-226#18777#19003
35K → 23M37234-197#19003#19200
23M → 24M8668+18#19200#19182
24M → 40K6546+19#19182#19163
40K → 25.2M4115+26#19163#19137
25.2M → FINISH10425+79#19137#19058
TOTALS13422519-1177
📊

Passing Analysis Visualizations

Explore your passing analysis through 5 different visualizations. Scroll to discover each one.

Time:
Category:

📈Position Graph

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🎨Heatmap Timeline

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Activity Data

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing