Boston Marathon logo
BOSTON MARATHON 2025

Laurena Liu

Bib: 23951•F

DC

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F50-54)
#0 / 1303
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:03
Rank: #19224
Start → 5K
26:03 | 8:23/mi
10K· 6.21 mi
51:36
Rank: #18648 (+576)
5K → 10K
25:33 | 8:13/mi
15K· 9.32 mi
1:17:48
Rank: #18714 (-66)
10K → 15K
26:12 | 8:26/mi
20K· 12.43 mi
1:45:56
Rank: #19418 (-704)
15K → 20K
28:08 | 9:03/mi
Half· 13.11 mi
1:51:44
Rank: #19415 (+3)
20K → Half
5:48 | 8:30/mi
25K· 15.53 mi
2:13:19
Rank: #19404 (+11)
Half → 25K
21:35 | 8:54/mi
30K· 18.64 mi
2:43:10
Rank: #19607 (-203)
25K → 30K
29:51 | 9:36/mi
20M
2:56:11
Rank: #19611 (-4)
30K → 20M
13:01 | 9:35/mi
21M
3:07:07
Rank: #19750 (-139)
20M → 21M
10:56 | 10:56/mi
35K· 21.75 mi
3:15:11
Rank: #19993 (-243)
21M → 35K
8:04 | 10:47/mi
23M
3:28:23
Rank: #20186 (-193)
35K → 23M
13:12 | 10:33/mi
24M
3:37:45
Rank: #20161 (+25)
23M → 24M
9:22 | 9:22/mi
40K· 24.85 mi
3:45:44
Rank: #20077 (+84)
24M → 40K
7:59 | 9:20/mi
25.2M
3:49:23
Rank: #20084 (-7)
40K → 25.2M
3:39 | 10:35/mi
Finish· 26.22 mi
3:58:32
Rank: #20067 (+17)
25.2M → Finish
9:09 | 8:59/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
Time1:51:44
Pace8:31 /mi
2nd Half
Distance13.11 mi
Time2:06:48
Pace9:40 /mi
📊Positive Split: 13.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:24:2326:038:2326:03
8:23
-
10K
6.21 mi11:49:5651:368:1825:33
8:13
-0:10
15K
9.32 mi12:16:081:17:488:2126:12
8:26
+0:13
20K
12.43 mi12:44:161:45:568:3128:08
9:03
+0:37
Half
13.11 mi12:50:041:51:448:315:48
8:30
-0:33
25K
15.53 mi13:11:392:13:198:3521:35
8:54
+0:24
30K
18.64 mi13:41:302:43:108:4529:51
9:36
+0:42
20M
20.00 mi13:54:312:56:118:4913:01
9:35
-0:01
21M
21.00 mi14:05:273:07:078:5510:56
10:56
+1:21
35K
21.75 mi14:13:313:15:118:588:04
10:47
-0:09
23M
23.00 mi14:26:433:28:239:0413:12
10:33
-0:14
24M
24.00 mi14:36:053:37:459:049:22
9:22
-1:11
40K
24.85 mi14:44:043:45:449:057:59
9:20
-0:02
25.2M
25.20 mi14:47:433:49:239:063:39
10:35
+1:15
Finish
26.22 mi14:56:523:58:329:069:09
8:59
-1:36

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

8:13 /mi

Average Pace

9:06 /mi

Slowest Pace

10:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:23:36

35% of race

Time at Steady Pace

1:59:05

50% of race

Time at Slower Pace

35:51

15% of race

Average Pace: 9:06 /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 mi11:24:2326:038:2326:03
8:23
#19224
10K
6.21 mi11:49:5651:368:1825:33
8:13
#18648
15K
9.32 mi12:16:081:17:488:2126:12
8:26
#18714
20K
12.43 mi12:44:161:45:568:3128:08
9:03
#19418
Half
13.11 mi12:50:041:51:448:315:48
8:30
#19415
25K
15.53 mi13:11:392:13:198:3521:35
8:54
#19404
30K
18.64 mi13:41:302:43:108:4529:51
9:36
#19607
20M
20.00 mi13:54:312:56:118:4913:01
9:35
#19611
21M
21.00 mi14:05:273:07:078:5510:56
10:56
#19750
35K
21.75 mi14:13:313:15:118:588:04
10:47
#19993
23M
23.00 mi14:26:433:28:239:0413:12
10:33
#20186
24M
24.00 mi14:36:053:37:459:049:22
9:22
#20161
40K
24.85 mi14:44:043:45:449:057:59
9:20
#20077
25.2M
25.20 mi14:47:433:49:239:063:39
10:35
#20084
Finish
26.22 mi14:56:523:58:329:069:09
8:59
#20067
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi192247037703718929(Top 67%)6861(Top 56%)6861(Top 527%)
10K6.21 mi3.10 mi18648+5766709+3286709+32818088(Top 64%)6357(Top 52%)6357(Top 488%)
15K9.32 mi3.11 mi18714-666741-326741-3218929(Top 67%)6861(Top 56%)6861(Top 527%)
20K12.43 mi3.11 mi19418-7047140-3997140-39921251(Top 75%)8177(Top 67%)8177(Top 628%)
Half13.11 mi0.68 mi19415+37142-27142-219281(Top 68%)7072(Top 58%)7072(Top 543%)
25K15.53 mi2.42 mi19404+117148-67148-619457(Top 69%)7234(Top 59%)7234(Top 555%)
30K18.64 mi3.11 mi19607-2037303-1557303-15520379(Top 72%)7865(Top 64%)7865(Top 604%)
20M20.00 mi1.36 mi19611-47326-237326-2319541(Top 69%)7550(Top 62%)7550(Top 579%)
21M21.00 mi1.00 mi19750-1397429-1037429-10321212(Top 75%)8561(Top 70%)8561(Top 657%)
35K21.75 mi0.75 mi19993-2437586-1577586-15723779(Top 84%)9933(Top 81%)9933(Top 762%)
23M23.00 mi1.25 mi20186-1937718-1327718-13222131(Top 78%)9133(Top 75%)9133(Top 701%)
24M24.00 mi1.00 mi20161+257728-107728-1019113(Top 67%)7606(Top 62%)7606(Top 584%)
40K24.85 mi0.85 mi20077+847702+267702+2618049(Top 64%)7153(Top 58%)7153(Top 549%)
25.2M25.20 mi0.35 mi20084-77714-127714-1219340(Top 68%)7828(Top 64%)7828(Top 601%)
Finish26.22 mi1.02 mi20067+177716-27716-218949(Top 67%)7570(Top 62%)7570(Top 581%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 67%
×21stories
+97ft-345ft

Overall

18929

Females

6861

F50-54

6861

5K→10K

3.1 - 6.2 mi

Top 64%
×5stories
+79ft-138ft

Overall

18088

Females

6357

F50-54

6357

10K→15K

6.2 - 9.3 mi

Top 67%
×3stories
+67ft-78ft

Overall

18929

Females

6861

F50-54

6861

15K→20K

9.3 - 12.4 mi

Top 75%
×5stories
+106ft-86ft

Overall

21251

Females

8177

F50-54

8177

20K→Half

12.4 - 13.1 mi

Top 68%
×2stories
+19ft-37ft

Overall

19281

Females

7072

F50-54

7072

Half→25K

13.1 - 15.5 mi

Top 69%
×4stories
+66ft-88ft

Overall

19457

Females

7234

F50-54

7234

25K→30K

15.5 - 18.6 mi

Top 72%
×9stories
+181ft-148ft

Overall

20379

Females

7865

F50-54

7865

30K→20M

18.6 - 20.0 mi

Top 69%
×5stories
+64ft-50ft

Overall

19541

Females

7550

F50-54

7550

20M→21M

20.0 - 21.0 mi

Top 75%
×8stories
+106ft-24ft

Overall

21212

Females

8561

F50-54

8561

21M→35K

21.0 - 21.8 mi

Top 84%
×7stories
+17ft-86ft

Overall

23779

Females

9933

F50-54

9933

35K→23M

21.8 - 23.0 mi

Top 78%
×5stories
+23ft-63ft

Overall

22131

Females

9133

F50-54

9133

23M→24M

23.0 - 24.0 mi

Top 67%
×6stories
+12ft-82ft

Overall

19113

Females

7606

F50-54

7606

24M→40K

24.0 - 24.9 mi

Top 64%
×1story
+6ft-20ft

Overall

18049

Females

7153

F50-54

7153

40K→25.2M

24.9 - 25.2 mi

Top 68%
×1story
+13ft-16ft

Overall

19340

Females

7828

F50-54

7828

25.2M→Finish

25.2 - 26.2 mi

Top 67%
×2stories
+22ft-21ft

Overall

18949

Females

7570

F50-54

7570

Passing Analysis

Category:
Athletes Passed
1730
Passed By
2573
Net Change
-843
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19224
5K → 10K66084+576#19224#18648
10K → 15K158224-66#18648#18714
15K → 20K60764-704#18714#19418
20K → Half3633+3#19418#19415
Half → 25K175164+11#19415#19404
25K → 30K155358-203#19404#19607
30K → 20M105109-4#19607#19611
20M → 21M58197-139#19611#19750
21M → 35K18261-243#19750#19993
35K → 23M37230-193#19993#20186
23M → 24M6843+25#20186#20161
24M → 40K10117+84#20161#20077
40K → 25.2M2835-7#20077#20084
25.2M → Finish7154+17#20084#20067
TOTALS17302573-843
📊

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