Boston Marathon logo
BOSTON MARATHON 2025

Lydia Wu

Bib: 16630•F

MA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Gender (Female)
#0 / 12228
Division (F18-39)
#0 / 5469
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:25
Rank: #19901
Start → 5K
26:25 | 8:30/mi
10K· 6.21 mi
52:57
Rank: #19968 (-67)
5K → 10K
26:32 | 8:32/mi
15K· 9.32 mi
1:19:45
Rank: #20012 (-44)
10K → 15K
26:48 | 8:38/mi
20K· 12.43 mi
1:47:03
Rank: #19948 (+64)
15K → 20K
27:18 | 8:47/mi
Half· 13.11 mi
1:52:52
Rank: #19914 (+34)
20K → Half
5:49 | 8:32/mi
25K· 15.53 mi
2:14:27
Rank: #19808 (+106)
Half → 25K
21:35 | 8:54/mi
30K· 18.64 mi
2:42:21
Rank: #19367 (+441)
25K → 30K
27:54 | 8:59/mi
20M
2:54:19
Rank: #19105 (+262)
30K → 20M
11:58 | 8:48/mi
21M
3:03:42
Rank: #18891 (+214)
20M → 21M
9:23 | 9:23/mi
35K· 21.75 mi
3:10:09
Rank: #18800 (+91)
21M → 35K
6:27 | 8:37/mi
23M
3:21:18
Rank: #18594 (+206)
35K → 23M
11:09 | 8:54/mi
24M
3:29:57
Rank: #18443 (+151)
23M → 24M
8:39 | 8:39/mi
40K· 24.85 mi
3:37:31
Rank: #18332 (+111)
24M → 40K
7:34 | 8:51/mi
25.2M
3:40:50
Rank: #18273 (+59)
40K → 25.2M
3:19 | 9:37/mi
Finish· 26.22 mi
3:49:18
Rank: #18158 (+115)
25.2M → Finish
8:28 | 8:19/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
Time1:52:52
Pace8:37 /mi
2nd Half
Distance13.11 mi
Time1:56:26
Pace8:53 /mi
📊Positive Split: 3.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:59:4326:258:3026:25
8:30
-
10K
6.21 mi11:26:1552:578:3126:32
8:32
+0:02
15K
9.32 mi11:53:031:19:458:3326:48
8:38
+0:06
20K
12.43 mi12:20:211:47:038:3727:18
8:47
+0:09
Half
13.11 mi12:26:101:52:528:375:49
8:32
-0:15
25K
15.53 mi12:47:452:14:278:3921:35
8:54
+0:22
30K
18.64 mi13:15:392:42:218:4327:54
8:59
+0:05
20M
20.00 mi13:27:372:54:198:4311:58
8:48
-0:11
21M
21.00 mi13:37:003:03:428:459:23
9:23
+0:35
35K
21.75 mi13:43:273:10:098:456:27
8:37
-0:46
23M
23.00 mi13:54:363:21:188:4511:09
8:54
+0:17
24M
24.00 mi14:03:153:29:578:458:39
8:39
-0:15
40K
24.85 mi14:10:493:37:318:457:34
8:51
+0:12
25.2M
25.20 mi14:14:083:40:508:463:19
9:37
+0:46
Finish
26.22 mi14:22:363:49:188:458:28
8:19
-1:18

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

8:19 /mi

Average Pace

8:45 /mi

Slowest Pace

9:37 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:36:36

94% of race

Time at Steady Pace

12:42

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:45 /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 mi10:59:4326:258:3026:25
8:30
#19901
10K
6.21 mi11:26:1552:578:3126:32
8:32
#19968
15K
9.32 mi11:53:031:19:458:3326:48
8:38
#20012
20K
12.43 mi12:20:211:47:038:3727:18
8:47
#19948
Half
13.11 mi12:26:101:52:528:375:49
8:32
#19914
25K
15.53 mi12:47:452:14:278:3921:35
8:54
#19808
30K
18.64 mi13:15:392:42:218:4327:54
8:59
#19367
20M
20.00 mi13:27:372:54:198:4311:58
8:48
#19105
21M
21.00 mi13:37:003:03:428:459:23
9:23
#18891
35K
21.75 mi13:43:273:10:098:456:27
8:37
#18800
23M
23.00 mi13:54:363:21:188:4511:09
8:54
#18594
24M
24.00 mi14:03:153:29:578:458:39
8:39
#18443
40K
24.85 mi14:10:493:37:318:457:34
8:51
#18332
25.2M
25.20 mi14:14:083:40:508:463:19
9:37
#18273
Finish
26.22 mi14:22:363:49:188:458:28
8:19
#18158
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi199017444744420071(Top 71%)7474(Top 61%)7474(Top 137%)
10K6.21 mi3.10 mi19968-677451-77451-720042(Top 71%)7487(Top 61%)7487(Top 137%)
15K9.32 mi3.11 mi20012-447472-217472-2120071(Top 71%)7474(Top 61%)7474(Top 137%)
20K12.43 mi3.11 mi19948+647443+297443+2919873(Top 70%)7413(Top 61%)7413(Top 136%)
Half13.11 mi0.68 mi19914+347424+197424+1919397(Top 68%)7118(Top 58%)7118(Top 130%)
25K15.53 mi2.42 mi19808+1067372+527372+5219444(Top 68%)7221(Top 59%)7221(Top 132%)
30K18.64 mi3.11 mi19367+4417170+2027170+20217596(Top 62%)6360(Top 52%)6360(Top 116%)
20M20.00 mi1.36 mi19105+2627039+1317039+13115737(Top 55%)5450(Top 45%)5450(Top 100%)
21M21.00 mi1.00 mi18891+2146943+966943+9615580(Top 55%)5505(Top 45%)5505(Top 101%)
35K21.75 mi0.75 mi18800+916906+376906+3716239(Top 57%)5924(Top 48%)5924(Top 108%)
23M23.00 mi1.25 mi18594+2066818+886818+8815734(Top 55%)5743(Top 47%)5743(Top 105%)
24M24.00 mi1.00 mi18443+1516763+556763+5515488(Top 55%)5650(Top 46%)5650(Top 103%)
40K24.85 mi0.85 mi18332+1116730+336730+3315501(Top 55%)5806(Top 47%)5806(Top 106%)
25.2M25.20 mi0.35 mi18273+596711+196711+1915274(Top 54%)5715(Top 47%)5715(Top 104%)
Finish26.22 mi1.02 mi18158+1156657+546657+5415010(Top 53%)5495(Top 45%)5495(Top 100%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 71%
×21stories
+97ft-345ft

Overall

20071

Females

7474

F18-39

7474

5K→10K

3.1 - 6.2 mi

Top 71%
×5stories
+79ft-138ft

Overall

20042

Females

7487

F18-39

7487

10K→15K

6.2 - 9.3 mi

Top 71%
×3stories
+67ft-78ft

Overall

20071

Females

7474

F18-39

7474

15K→20K

9.3 - 12.4 mi

Top 70%
×5stories
+106ft-86ft

Overall

19873

Females

7413

F18-39

7413

20K→Half

12.4 - 13.1 mi

Top 68%
×2stories
+19ft-37ft

Overall

19397

Females

7118

F18-39

7118

Half→25K

13.1 - 15.5 mi

Top 68%
×4stories
+66ft-88ft

Overall

19444

Females

7221

F18-39

7221

25K→30K

15.5 - 18.6 mi

Top 62%
×9stories
+181ft-148ft

Overall

17596

Females

6360

F18-39

6360

30K→20M

18.6 - 20.0 mi

Top 55%
×5stories
+64ft-50ft

Overall

15737

Females

5450

F18-39

5450

20M→21M

20.0 - 21.0 mi

Top 55%
×8stories
+106ft-24ft

Overall

15580

Females

5505

F18-39

5505

21M→35K

21.0 - 21.8 mi

Top 57%
×7stories
+17ft-86ft

Overall

16239

Females

5924

F18-39

5924

35K→23M

21.8 - 23.0 mi

Top 55%
×5stories
+23ft-63ft

Overall

15734

Females

5743

F18-39

5743

23M→24M

23.0 - 24.0 mi

Top 55%
×6stories
+12ft-82ft

Overall

15488

Females

5650

F18-39

5650

24M→40K

24.0 - 24.9 mi

Top 55%
×1story
+6ft-20ft

Overall

15501

Females

5806

F18-39

5806

40K→25.2M

24.9 - 25.2 mi

Top 54%
×1story
+13ft-16ft

Overall

15274

Females

5715

F18-39

5715

25.2M→Finish

25.2 - 26.2 mi

Top 53%
×2stories
+22ft-21ft

Overall

15010

Females

5495

F18-39

5495

Passing Analysis

Category:
Athletes Passed
2678
Passed By
935
Net Change
+1743
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19901
5K → 10K245312-67#19901#19968
10K → 15K171215-44#19968#20012
15K → 20K218154+64#20012#19948
20K → Half5117+34#19948#19914
Half → 25K210104+106#19914#19808
25K → 30K47534+441#19808#19367
30K → 20M2686+262#19367#19105
20M → 21M22511+214#19105#18891
21M → 35K10615+91#18891#18800
35K → 23M21711+206#18800#18594
23M → 24M16615+151#18594#18443
24M → 40K13221+111#18443#18332
40K → 25.2M656+59#18332#18273
25.2M → Finish12914+115#18273#18158
TOTALS2678935+1743
📊

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