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BOSTON MARATHON 2025

Sunny Liu

Bib: 14857•F

NY

0:00
0:00
/ mi
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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
22:26
Rank: #9659
Start → 5K
7:13/mi
22:26 split
10K· 6.21 mi
45:39
Rank: #10750 (-1091)
5K → 10K
7:28/mi
23:13 split
15K· 9.32 mi
1:08:59
Rank: #11076 (-326)
10K → 15K
7:31/mi
23:20 split
20K· 12.43 mi
1:35:13
Rank: #13032 (-1956)
15K → 20K
8:27/mi
26:14 split
Half· 13.11 mi
1:40:55
Rank: #13355 (-323)
20K → Half
8:21/mi
5:42 split
25K· 15.53 mi
2:03:43
Rank: #15281 (-1926)
Half → 25K
9:24/mi
22:48 split
30K· 18.64 mi
2:36:22
Rank: #17397 (-2116)
25K → 30K
10:31/mi
32:39 split
20M
2:50:10
Rank: #17837 (-440)
30K → 20M
10:09/mi
13:48 split
21M
3:00:18
Rank: #17933 (-96)
20M → 21M
10:08/mi
10:08 split
35K· 21.75 mi
3:07:29
Rank: #18066 (-133)
21M → 35K
9:36/mi
7:11 split
23M
3:20:47
Rank: #18456 (-390)
35K → 23M
10:37/mi
13:18 split
24M
3:31:13
Rank: #18783 (-327)
23M → 24M
10:26/mi
10:26 split
40K· 24.85 mi
3:40:10
Rank: #18931 (-148)
24M → 40K
10:28/mi
8:57 split
25.2M
3:43:53
Rank: #18950 (-19)
40K → 25.2M
10:47/mi
3:43 split
Finish· 26.22 mi
3:52:57
Rank: #18941 (+9)
25.2M → Finish
8:54/mi
9:04 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:40:55
Pace7:42 /mi
2nd Half
Distance13.11 mi
Time2:12:02
Pace10:04 /mi
📊Positive Split: 30.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:4022:267:1322:26
7:13
-
10K
6.21 mi11:15:5345:397:2123:13
7:28
+0:15
15K
9.32 mi11:39:131:08:597:2423:20
7:31
+0:03
20K
12.43 mi12:05:271:35:137:4026:14
8:27
+0:56
Half
13.11 mi12:11:091:40:557:425:42
8:21
-0:06
25K
15.53 mi12:33:572:03:437:5822:48
9:24
+1:03
30K
18.64 mi13:06:362:36:228:2332:39
10:31
+1:07
20M
20.00 mi13:20:242:50:108:3013:48
10:09
-0:22
21M
21.00 mi13:30:323:00:188:3510:08
10:08
-0:01
35K
21.75 mi13:37:433:07:298:377:11
9:36
-0:32
23M
23.00 mi13:51:013:20:478:4413:18
10:37
+1:01
24M
24.00 mi14:01:273:31:138:4810:26
10:26
-0:11
40K
24.85 mi14:10:243:40:108:518:57
10:28
+0:02
25.2M
25.20 mi14:14:073:43:538:533:43
10:47
+0:19
Finish
26.22 mi14:23:113:52:578:539:04
8:54
-1:53

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

7:13 /mi

Average Pace

8:53 /mi

Slowest Pace

10:47 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:49:59

47% of race

Time at Steady Pace

53:55

23% of race

Time at Slower Pace

1:09:03

30% of race

Average Pace: 8:53 /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 mi10:52:4022:267:1322:26
7:13
#9659
10K
6.21 mi11:15:5345:397:2123:13
7:28
#10750
15K
9.32 mi11:39:131:08:597:2423:20
7:31
#11076
20K
12.43 mi12:05:271:35:137:4026:14
8:27
#13032
Half
13.11 mi12:11:091:40:557:425:42
8:21
#13355
25K
15.53 mi12:33:572:03:437:5822:48
9:24
#15281
30K
18.64 mi13:06:362:36:228:2332:39
10:31
#17397
20M
20.00 mi13:20:242:50:108:3013:48
10:09
#17837
21M
21.00 mi13:30:323:00:188:3510:08
10:08
#17933
35K
21.75 mi13:37:433:07:298:377:11
9:36
#18066
23M
23.00 mi13:51:013:20:478:4413:18
10:37
#18456
24M
24.00 mi14:01:273:31:138:4810:26
10:26
#18783
40K
24.85 mi14:10:243:40:108:518:57
10:28
#18931
25.2M
25.20 mi14:14:073:43:538:533:43
10:47
#18950
Finish
26.22 mi14:23:113:52:578:539:04
8:54
#18941
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi96591658165811873(Top 42%)2841(Top 23%)2841(Top 52%)
10K6.21 mi3.10 mi10750-10912184-5262184-52611868(Top 42%)2751(Top 22%)2751(Top 50%)
15K9.32 mi3.11 mi11076-3262358-1742358-17411873(Top 42%)2841(Top 23%)2841(Top 52%)
20K12.43 mi3.11 mi13032-19563468-11103468-111017850(Top 63%)6263(Top 51%)6263(Top 115%)
Half13.11 mi0.68 mi13355-3233645-1773645-17718388(Top 65%)6565(Top 54%)6565(Top 120%)
25K15.53 mi2.42 mi15281-19264766-11214766-112121551(Top 76%)8392(Top 69%)8392(Top 153%)
30K18.64 mi3.11 mi17397-21166059-12936059-129322961(Top 81%)9301(Top 76%)9301(Top 170%)
20M20.00 mi1.36 mi17837-4406335-2766335-27621447(Top 76%)8597(Top 70%)8597(Top 157%)
21M21.00 mi1.00 mi17933-966394-596394-5918819(Top 66%)7244(Top 59%)7244(Top 132%)
35K21.75 mi0.75 mi18066-1336489-956489-9520697(Top 73%)8343(Top 68%)8343(Top 153%)
23M23.00 mi1.25 mi18456-3906739-2506739-25022337(Top 79%)9244(Top 76%)9244(Top 169%)
24M24.00 mi1.00 mi18783-3276951-2126951-21222637(Top 80%)9446(Top 77%)9446(Top 173%)
40K24.85 mi0.85 mi18931-1487066-1157066-11521838(Top 77%)9111(Top 75%)9111(Top 167%)
25.2M25.20 mi0.35 mi18950-197082-167082-1619980(Top 70%)8141(Top 67%)8141(Top 149%)
Finish26.22 mi1.02 mi18941+97094-127094-1218538(Top 65%)7352(Top 60%)7352(Top 134%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 42%
×21story building
+97ft-345ft

Overall

11873

Females

2841

F18-39

2841

5K→10K

3.1 - 6.2 mi

Top 42%
×5story building
+79ft-138ft

Overall

11868

Females

2751

F18-39

2751

10K→15K

6.2 - 9.3 mi

Top 42%
×3story building
+67ft-78ft

Overall

11873

Females

2841

F18-39

2841

15K→20K

9.3 - 12.4 mi

Top 63%
×5story building
+106ft-86ft

Overall

17850

Females

6263

F18-39

6263

20K→Half

12.4 - 13.1 mi

Top 65%
×2story building
+19ft-37ft

Overall

18388

Females

6565

F18-39

6565

Half→25K

13.1 - 15.5 mi

Top 76%
×4story building
+66ft-88ft

Overall

21551

Females

8392

F18-39

8392

25K→30K

15.5 - 18.6 mi

Top 81%
×9story building
+181ft-148ft

Overall

22961

Females

9301

F18-39

9301

30K→20M

18.6 - 20.0 mi

Top 76%
×5story building
+64ft-50ft

Overall

21447

Females

8597

F18-39

8597

20M→21M

20.0 - 21.0 mi

Top 66%
×8story building
+106ft-24ft

Overall

18819

Females

7244

F18-39

7244

21M→35K

21.0 - 21.8 mi

Top 73%
×7story building
+17ft-86ft

Overall

20697

Females

8343

F18-39

8343

35K→23M

21.8 - 23.0 mi

Top 79%
×5story building
+23ft-63ft

Overall

22337

Females

9244

F18-39

9244

23M→24M

23.0 - 24.0 mi

Top 80%
×6story building
+12ft-82ft

Overall

22637

Females

9446

F18-39

9446

24M→40K

24.0 - 24.9 mi

Top 77%
×1story
+6ft-20ft

Overall

21838

Females

9111

F18-39

9111

40K→25.2M

24.9 - 25.2 mi

Top 70%
×1story
+13ft-16ft

Overall

19980

Females

8141

F18-39

8141

25.2M→Finish

25.2 - 26.2 mi

Top 65%
×2story building
+22ft-21ft

Overall

18538

Females

7352

F18-39

7352

Passing Analysis

Category:
Athletes Passed
479
Passed By
9759
Net Change
-9282
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9659
5K → 10K301119-1091#9659#10750
10K → 15K84410-326#10750#11076
15K → 20K141970-1956#11076#13032
20K → Half0323-323#13032#13355
Half → 25K181944-1926#13355#15281
25K → 30K122128-2116#15281#17397
30K → 20M42482-440#17397#17837
20M → 21M69165-96#17837#17933
21M → 35K31164-133#17933#18066
35K → 23M38428-390#18066#18456
23M → 24M14341-327#18456#18783
24M → 40K42190-148#18783#18931
40K → 25.2M2140-19#18931#18950
25.2M → Finish6455+9#18950#18941
TOTALS4799759-9282
📊

Passing Visuals

Category:
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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing