All Results|Race Analytics|Course|Contact
BOSTON MARATHON 2025

Chunhua Liu

Bib: 6372•F

WA

Masters
Boston Marathon logo
0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Top 27%
Gender (Female)
#0 / 12228
Top 10%
Masters (Masters Women)
#0 / 6759
Top 3%
Age Group (F55-59)
#0 / 994
Top 0.5%
Race Day Weather
50°/40°F
broken 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· 3.11 mi
21:41
Rank: #7674
Start → 5K
21:41 | 6:59/mi
10K· 6.21 mi
43:48
Rank: #8253 (-579)
5K → 10K
22:07 | 7:07/mi
15K· 9.32 mi
1:06:09
Rank: #8454 (-201)
10K → 15K
22:21 | 7:12/mi
20K· 12.43 mi
1:29:08
Rank: #8745 (-291)
15K → 20K
22:59 | 7:24/mi
Half· 13.11 mi
1:33:58
Rank: #8690 (+55)
20K → Half
4:50 | 7:05/mi
25K· 15.53 mi
1:51:31
Rank: #8504 (+186)
Half → 25K
17:33 | 7:14/mi
30K· 18.64 mi
2:15:10
Rank: #8437 (+67)
25K → 30K
23:39 | 7:37/mi
20M
2:25:32
Rank: #8354 (+83)
30K → 20M
10:22 | 7:38/mi
21M
2:33:48
Rank: #8331 (+23)
20M → 21M
8:16 | 8:16/mi
35K· 21.75 mi
2:39:07
Rank: #8195 (+136)
21M → 35K
5:19 | 7:06/mi
23M
2:48:34
Rank: #8055 (+140)
35K → 23M
9:27 | 7:33/mi
24M
2:55:43
Rank: #7896 (+159)
23M → 24M
7:09 | 7:09/mi
40K· 24.85 mi
3:01:57
Rank: #7749 (+147)
24M → 40K
6:14 | 7:17/mi
25.2M
3:04:47
Rank: #7710 (+39)
40K → 25.2M
2:50 | 8:13/mi
Finish· 26.22 mi
3:12:11
Rank: #7659 (+51)
25.2M → Finish
7:24 | 7:16/mi
Is this your race?

Claim it — get your free Race Performance Report

An AI deep-dive into your pacing, rankings, and passing — built from your real splits and emailed to you, free.

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via Half
Distance13.11 mi
Time1:33:58
Pace7:10 /mi
2nd Half
Distance13.11 mi
Time1:38:13
Pace7:30 /mi
📊Positive Split: 4.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:28:4521:416:5921:41
6:59
-
10K
6.21 mi10:50:5243:487:0322:07
7:07
+0:08
15K
9.32 mi11:13:131:06:097:0622:21
7:12
+0:05
20K
12.43 mi11:36:121:29:087:1022:59
7:24
+0:12
Half
13.11 mi11:41:021:33:587:104:50
7:05
-0:19
25K
15.53 mi11:58:351:51:317:1117:33
7:14
+0:09
30K
18.64 mi12:22:142:15:107:1523:39
7:37
+0:23
20M
20.00 mi12:32:362:25:327:1710:22
7:38
+0:01
21M
21.00 mi12:40:522:33:487:198:16
8:16
+0:38
35K
21.75 mi12:46:112:39:077:195:19
7:06
-1:10
23M
23.00 mi12:55:382:48:347:209:27
7:33
+0:27
24M
24.00 mi13:02:472:55:437:197:09
7:09
-0:24
40K
24.85 mi13:09:013:01:577:196:14
7:17
+0:08
25.2M
25.20 mi13:11:513:04:477:202:50
8:13
+0:56
Finish
26.22 mi13:19:153:12:117:207:24
7:16
-0:57

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

6:59 /mi

Average Pace

7:20 /mi

Slowest Pace

8:16 /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

3:01:05

94% of race

Time at Steady Pace

2:50

1% of race

Time at Slower Pace

8:16

4% of race

Average Pace: 7:20 /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 mi10:28:4521:416:5921:41
6:59
#7674
10K
6.21 mi10:50:5243:487:0322:07
7:07
#8253
15K
9.32 mi11:13:131:06:097:0622:21
7:12
#8454
20K
12.43 mi11:36:121:29:087:1022:59
7:24
#8745
Half
13.11 mi11:41:021:33:587:104:50
7:05
#8690
25K
15.53 mi11:58:351:51:317:1117:33
7:14
#8504
30K
18.64 mi12:22:142:15:107:1523:39
7:37
#8437
20M
20.00 mi12:32:362:25:327:1710:22
7:38
#8354
21M
21.00 mi12:40:522:33:487:198:16
8:16
#8331
35K
21.75 mi12:46:112:39:077:195:19
7:06
#8195
23M
23.00 mi12:55:382:48:347:209:27
7:33
#8055
24M
24.00 mi13:02:472:55:437:197:09
7:09
#7896
40K
24.85 mi13:09:013:01:577:196:14
7:17
#7749
25.2M
25.20 mi13:11:513:04:477:202:50
8:13
#7710
Finish
26.22 mi13:19:153:12:117:207:24
7:16
#7659
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 mi76748788789077(Top 32%)1458(Top 12%)1458(Top 147%)
10K6.21 mi3.10 mi8253-5791090-2121090-2128840(Top 31%)1313(Top 11%)1313(Top 132%)
15K9.32 mi3.11 mi8454-2011181-911181-919077(Top 32%)1458(Top 12%)1458(Top 147%)
20K12.43 mi3.11 mi8745-2911315-1341315-1349896(Top 35%)1906(Top 16%)1906(Top 192%)
Half13.11 mi0.68 mi8690+551297+181297+188237(Top 29%)1175(Top 10%)1175(Top 118%)
25K15.53 mi2.42 mi8504+1861244+531244+537917(Top 28%)1185(Top 10%)1185(Top 119%)
30K18.64 mi3.11 mi8437+671275-311275-318536(Top 30%)1609(Top 13%)1609(Top 162%)
20M20.00 mi1.36 mi8354+831270+51270+57910(Top 28%)1502(Top 12%)1502(Top 151%)
21M21.00 mi1.00 mi8331+231298-281298-289022(Top 32%)2165(Top 18%)2165(Top 218%)
35K21.75 mi0.75 mi8195+1361264+341264+346070(Top 21%)949(Top 8%)949(Top 95%)
23M23.00 mi1.25 mi8055+1401265-11265-16921(Top 24%)1359(Top 11%)1359(Top 137%)
24M24.00 mi1.00 mi7896+1591242+231242+235550(Top 20%)908(Top 7%)908(Top 91%)
40K24.85 mi0.85 mi7749+1471218+241218+245643(Top 20%)994(Top 8%)994(Top 100%)
25.2M25.20 mi0.35 mi7710+391219-11219-17198(Top 25%)1714(Top 14%)1714(Top 172%)
Finish26.22 mi1.02 mi7659+511229-101229-107521(Top 26%)1857(Top 15%)1857(Top 187%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 32%
×21stories
+97ft-345ft

Overall

9077

Females

1458

F55-59

1458

5K→10K

3.1 - 6.2 mi

Top 31%
×5stories
+79ft-138ft

Overall

8840

Females

1313

F55-59

1313

10K→15K

6.2 - 9.3 mi

Top 32%
×3stories
+67ft-78ft

Overall

9077

Females

1458

F55-59

1458

15K→20K

9.3 - 12.4 mi

Top 35%
×5stories
+106ft-86ft

Overall

9896

Females

1906

F55-59

1906

20K→Half

12.4 - 13.1 mi

Top 29%
×2stories
+19ft-37ft

Overall

8237

Females

1175

F55-59

1175

Half→25K

13.1 - 15.5 mi

Top 28%
×4stories
+66ft-88ft

Overall

7917

Females

1185

F55-59

1185

25K→30K

15.5 - 18.6 mi

Top 30%
×9stories
+181ft-148ft

Overall

8536

Females

1609

F55-59

1609

30K→20M

18.6 - 20.0 mi

Top 28%
×5stories
+64ft-50ft

Overall

7910

Females

1502

F55-59

1502

20M→21M

20.0 - 21.0 mi

Top 32%
×8stories
+106ft-24ft

Overall

9022

Females

2165

F55-59

2165

21M→35K

21.0 - 21.8 mi

Top 21%
×7stories
+17ft-86ft

Overall

6070

Females

949

F55-59

949

35K→23M

21.8 - 23.0 mi

Top 24%
×5stories
+23ft-63ft

Overall

6921

Females

1359

F55-59

1359

23M→24M

23.0 - 24.0 mi

Top 20%
×6stories
+12ft-82ft

Overall

5550

Females

908

F55-59

908

24M→40K

24.0 - 24.9 mi

Top 20%
×1story
+6ft-20ft

Overall

5643

Females

994

F55-59

994

40K→25.2M

24.9 - 25.2 mi

Top 25%
×1story
+13ft-16ft

Overall

7198

Females

1714

F55-59

1714

25.2M→Finish

25.2 - 26.2 mi

Top 26%
×2stories
+22ft-21ft

Overall

7521

Females

1857

F55-59

1857

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1783
Passed By
1768
Net Change
+15
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7674
5K → 10K50629-579#7674#8253
10K → 15K93294-201#8253#8454
15K → 20K89380-291#8454#8745
20K → Half627+55#8745#8690
Half → 25K22943+186#8690#8504
25K → 30K239172+67#8504#8437
30K → 20M14158+83#8437#8354
20M → 21M9875+23#8354#8331
21M → 35K1448+136#8331#8195
35K → 23M17737+140#8195#8055
23M → 24M1656+159#8055#7896
24M → 40K1536+147#7896#7749
40K → 25.2M5213+39#7749#7710
25.2M → Finish9140+51#7710#7659
TOTALS17831768+15
📊

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...

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