All Results|Race Analytics|Course|Contact
BOSTON MARATHON 2026

Lily Dai

Bib: 20021•F

NJ

Boston Marathon logo
0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 29021
Top 48%
Gender (Female)
#0 / 12578
Top 35%
Masters (Masters Women)
#0 / 6862
Top 19%
Age Group (F55-59)
#0 / 951
Top 5%
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
23:43
3.11 mi
Rank: #13969
Start → 5K
23:43 | 7:39/mi
10K
48:22
6.21 mi
Rank: #15342 (-1373)
5K → 10K
24:39 | 7:57/mi
15K
1:12:41
9.32 mi
Rank: #15416 (-74)
10K → 15K
24:19 | 7:50/mi
20K
1:37:14
12.43 mi
Rank: #15369 (+47)
15K → 20K
24:33 | 7:55/mi
HALF
1:42:29
13.11 mi
Rank: #15324 (+45)
20K → HALF
5:15 | 7:43/mi
25K
2:01:35
15.53 mi
Rank: #15147 (+177)
HALF → 25K
19:06 | 7:53/mi
30K
2:26:23
18.64 mi
Rank: #14785 (+362)
25K → 30K
24:48 | 7:59/mi
20M
2:37:19
20.00 mi
Rank: #14635 (+150)
30K → 20M
10:56 | 8:03/mi
21M
2:45:39
21.00 mi
Rank: #14441 (+194)
20M → 21M
8:20 | 8:20/mi
35K
2:51:18
21.75 mi
Rank: #14303 (+138)
21M → 35K
5:39 | 7:34/mi
23M
3:01:12
23.00 mi
Rank: #14137 (+166)
35K → 23M
9:54 | 7:55/mi
24M
3:09:09
24.00 mi
Rank: #14101 (+36)
23M → 24M
7:57 | 7:57/mi
40K
3:16:04
24.85 mi
Rank: #14055 (+46)
24M → 40K
6:55 | 8:06/mi
25.2M
3:19:05
25.20 mi
Rank: #14047 (+8)
40K → 25.2M
3:01 | 8:45/mi
FINISH
3:27:00
26.22 mi
Rank: #14021 (+26)
25.2M → FINISH
7:55 | 7:47/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:42:29
Pace7:50 /mi
2nd Half
Distance13.11 mi
Time1:44:31
Pace7:59 /mi
📊Positive Split: 2.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:08:1823:437:3923:43
7:39
-
10K
6.21 mi11:32:5748:227:4824:39
7:57
+0:18
15K
9.32 mi11:57:161:12:417:4824:19
7:50
-0:07
20K
12.43 mi12:21:491:37:147:5024:33
7:55
+0:05
HALF
13.11 mi12:27:041:42:297:505:15
7:43
-0:12
25K
15.53 mi12:46:102:01:357:5019:06
7:53
+0:10
30K
18.64 mi13:10:582:26:237:5224:48
7:59
+0:06
20M
20.00 mi13:21:542:37:197:5210:56
8:03
+0:04
21M
21.00 mi13:30:142:45:397:548:20
8:20
+0:17
35K
21.75 mi13:35:532:51:187:535:39
7:34
-0:46
23M
23.00 mi13:45:473:01:127:539:54
7:55
+0:21
24M
24.00 mi13:53:443:09:097:537:57
7:57
+0:02
40K
24.85 mi14:00:393:16:047:546:55
8:06
+0:09
25.2M
25.20 mi14:03:403:19:057:553:01
8:45
+0:39
FINISH
26.22 mi14:11:353:27:007:557:55
7:47
-0:58

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

7:34 /mi

Average Pace

7:54 /mi

Slowest Pace

8:45 /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

3:15:39

95% of race

Time at Steady Pace

11:21

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:54 /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 mi11:08:1823:437:3923:43
7:39
#13969
10K
6.21 mi11:32:5748:227:4824:39
7:57
#15342
15K
9.32 mi11:57:161:12:417:4824:19
7:50
#15416
20K
12.43 mi12:21:491:37:147:5024:33
7:55
#15369
HALF
13.11 mi12:27:041:42:297:505:15
7:43
#15324
25K
15.53 mi12:46:102:01:357:5019:06
7:53
#15147
30K
18.64 mi13:10:582:26:237:5224:48
7:59
#14785
20M
20.00 mi13:21:542:37:197:5210:56
8:03
#14635
21M
21.00 mi13:30:142:45:397:548:20
8:20
#14441
35K
21.75 mi13:35:532:51:187:535:39
7:34
#14303
23M
23.00 mi13:45:473:01:127:539:54
7:55
#14137
24M
24.00 mi13:53:443:09:097:537:57
7:57
#14101
40K
24.85 mi14:00:393:16:047:546:55
8:06
#14055
25.2M
25.20 mi14:03:403:19:057:553:01
8:45
#14047
FINISH
26.22 mi14:11:353:27:007:557:55
7:47
#14021
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi139694062406215573(Top 54%)5092(Top 40%)5092(Top 535%)
10K6.21 mi3.10 mi15342-13734926-8644926-86416743(Top 58%)5758(Top 46%)5758(Top 605%)
15K9.32 mi3.11 mi15416-744989-634989-6315573(Top 54%)5092(Top 40%)5092(Top 535%)
20K12.43 mi3.11 mi15369+474970+194970+1915342(Top 53%)4994(Top 40%)4994(Top 525%)
HALF13.11 mi0.68 mi15324+454941+294941+2914794(Top 51%)4596(Top 37%)4596(Top 483%)
25K15.53 mi2.42 mi15147+1774846+954846+9514430(Top 50%)4531(Top 36%)4531(Top 476%)
30K18.64 mi3.11 mi14785+3624662+1844662+18413377(Top 46%)4059(Top 32%)4059(Top 427%)
20M20.00 mi1.36 mi14635+1504600+624600+6213196(Top 45%)4053(Top 32%)4053(Top 426%)
21M21.00 mi1.00 mi14441+1944504+964504+9612124(Top 42%)3603(Top 29%)3603(Top 379%)
35K21.75 mi0.75 mi14303+1384441+634441+6311313(Top 39%)3179(Top 25%)3179(Top 334%)
23M23.00 mi1.25 mi14137+1664380+614380+6111867(Top 41%)3537(Top 28%)3537(Top 372%)
24M24.00 mi1.00 mi14101+364378+24378+213419(Top 46%)4478(Top 36%)4478(Top 471%)
40K24.85 mi0.85 mi14055+464388-104388-1013108(Top 45%)4386(Top 35%)4386(Top 461%)
25.2M25.20 mi0.35 mi14047+84392-44392-413281(Top 46%)4513(Top 36%)4513(Top 475%)
FINISH26.22 mi1.02 mi14021+264394-24394-213554(Top 47%)4686(Top 37%)4686(Top 493%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 54%
×21
+97ft-345ft

Overall

15573

Females

5092

F55-59

5092

5K→10K

3.1 - 6.2 mi

Top 58%
×5
+79ft-138ft

Overall

16743

Females

5758

F55-59

5758

10K→15K

6.2 - 9.3 mi

Top 54%
×3
+67ft-78ft

Overall

15573

Females

5092

F55-59

5092

15K→20K

9.3 - 12.4 mi

Top 53%
×5
+106ft-86ft

Overall

15342

Females

4994

F55-59

4994

20K→HALF

12.4 - 13.1 mi

Top 51%
×2
+19ft-37ft

Overall

14794

Females

4596

F55-59

4596

HALF→25K

13.1 - 15.5 mi

Top 50%
×4
+66ft-88ft

Overall

14430

Females

4531

F55-59

4531

25K→30K

15.5 - 18.6 mi

Top 46%
×9
+181ft-148ft

Overall

13377

Females

4059

F55-59

4059

30K→20M

18.6 - 20.0 mi

Top 45%
×5
+64ft-50ft

Overall

13196

Females

4053

F55-59

4053

20M→21M

20.0 - 21.0 mi

Top 42%
×8
+106ft-24ft

Overall

12124

Females

3603

F55-59

3603

21M→35K

21.0 - 21.8 mi

Top 39%
×7
+17ft-86ft

Overall

11313

Females

3179

F55-59

3179

35K→23M

21.8 - 23.0 mi

Top 41%
×5
+23ft-63ft

Overall

11867

Females

3537

F55-59

3537

23M→24M

23.0 - 24.0 mi

Top 46%
×6
+12ft-82ft

Overall

13419

Females

4478

F55-59

4478

24M→40K

24.0 - 24.9 mi

Top 45%
×1
+6ft-20ft

Overall

13108

Females

4386

F55-59

4386

40K→25.2M

24.9 - 25.2 mi

Top 46%
×1
+13ft-16ft

Overall

13281

Females

4513

F55-59

4513

25.2M→FINISH

25.2 - 26.2 mi

Top 47%
×2
+22ft-21ft

Overall

13554

Females

4686

F55-59

4686

Is this your race? Claiming it gets you a full AI race analysis — free, sent to you by email.

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
2084
Passed By
2136
Net Change
-52
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13969
5K → 10K341407-1373#13969#15342
10K → 15K178252-74#15342#15416
15K → 20K187140+47#15416#15369
20K → HALF6116+45#15369#15324
HALF → 25K22447+177#15324#15147
25K → 30K40240+362#15147#14785
30K → 20M17323+150#14785#14635
20M → 21M21521+194#14635#14441
21M → 35K1424+138#14441#14303
35K → 23M18721+166#14303#14137
23M → 24M8448+36#14137#14101
24M → 40K8438+46#14101#14055
40K → 25.2M3527+8#14055#14047
25.2M → FINISH7852+26#14047#14021
TOTALS20842136-52

Is this your race? Claiming it gets you a full AI race analysis — free, sent to you by email.

📊

Passing Analysis Visualizations

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

Time:
Category:

📈Position Graph

Loading...

🎨Heatmap Timeline

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Qualifying & Age Grade

See how your performance stacks up against qualifying standards

OTQ

Olympic Trials Qualifying analysis available

Activity Data

Upload your GPX file to see detailed activity metrics

Upload your GPX file

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

.gpx files up to 10MB

Export & Support

Download your data, get help, and share your feedback

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