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BOSTON MARATHON 2025

Rona Sun

Bib: 26797•F

MA

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
29:18
Rank: #24011
Start → 5K
9:26/mi
29:18 split
10K· 6.21 mi
58:45
Rank: #24056 (-45)
5K → 10K
9:29/mi
29:27 split
15K· 9.32 mi
1:28:32
Rank: #24025 (+31)
10K → 15K
9:35/mi
29:47 split
20K· 12.43 mi
1:58:35
Rank: #23857 (+168)
15K → 20K
9:40/mi
30:03 split
Half· 13.11 mi
2:04:59
Rank: #23830 (+27)
20K → Half
9:23/mi
6:24 split
25K· 15.53 mi
2:29:06
Rank: #23692 (+138)
Half → 25K
9:57/mi
24:07 split
30K· 18.64 mi
3:00:22
Rank: #23330 (+362)
25K → 30K
10:04/mi
31:16 split
20M
3:14:10
Rank: #23174 (+156)
30K → 20M
10:09/mi
13:48 split
21M
3:24:42
Rank: #23002 (+172)
20M → 21M
10:32/mi
10:32 split
35K· 21.75 mi
3:31:46
Rank: #22908 (+94)
21M → 35K
9:27/mi
7:04 split
23M
3:43:39
Rank: #22665 (+243)
35K → 23M
9:29/mi
11:53 split
24M
3:52:50
Rank: #22491 (+174)
23M → 24M
9:11/mi
9:11 split
40K· 24.85 mi
4:00:32
Rank: #22317 (+174)
24M → 40K
9:00/mi
7:42 split
25.2M
4:03:54
Rank: #22245 (+72)
40K → 25.2M
9:46/mi
3:22 split
Finish· 26.22 mi
4:12:25
Rank: #22046 (+199)
25.2M → Finish
8:21/mi
8:31 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:04:59
Pace9:32 /mi
2nd Half
Distance13.11 mi
Time2:07:26
Pace9:43 /mi
📊Positive Split: 2.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:46:1929:189:2629:18
9:26
-
10K
6.21 mi12:15:4658:459:2729:27
9:29
+0:03
15K
9.32 mi12:45:331:28:329:3029:47
9:35
+0:06
20K
12.43 mi13:15:361:58:359:3330:03
9:40
+0:05
Half
13.11 mi13:22:002:04:599:326:24
9:23
-0:17
25K
15.53 mi13:46:072:29:069:3624:07
9:57
+0:34
30K
18.64 mi14:17:233:00:229:4131:16
10:04
+0:07
20M
20.00 mi14:31:113:14:109:4213:48
10:09
+0:05
21M
21.00 mi14:41:433:24:429:4510:32
10:32
+0:23
35K
21.75 mi14:48:473:31:469:447:04
9:27
-1:05
23M
23.00 mi15:00:403:43:399:4311:53
9:29
+0:02
24M
24.00 mi15:09:513:52:509:429:11
9:11
-0:18
40K
24.85 mi15:17:334:00:329:417:42
9:00
-0:11
25.2M
25.20 mi15:20:554:03:549:413:22
9:46
+0:46
Finish
26.22 mi15:29:264:12:259:388:31
8:21
-1:25

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

8:21 /mi

Average Pace

9:38 /mi

Slowest Pace

10:32 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

25:24

10% of race

Time at Steady Pace

2:23:56

57% of race

Time at Slower Pace

1:23:05

33% of race

Average Pace: 9:38 /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 mi11:46:1929:189:2629:18
9:26
#24011
10K
6.21 mi12:15:4658:459:2729:27
9:29
#24056
15K
9.32 mi12:45:331:28:329:3029:47
9:35
#24025
20K
12.43 mi13:15:361:58:359:3330:03
9:40
#23857
Half
13.11 mi13:22:002:04:599:326:24
9:23
#23830
25K
15.53 mi13:46:072:29:069:3624:07
9:57
#23692
30K
18.64 mi14:17:233:00:229:4131:16
10:04
#23330
20M
20.00 mi14:31:113:14:109:4213:48
10:09
#23174
21M
21.00 mi14:41:433:24:429:4510:32
10:32
#23002
35K
21.75 mi14:48:473:31:469:447:04
9:27
#22908
23M
23.00 mi15:00:403:43:399:4311:53
9:29
#22665
24M
24.00 mi15:09:513:52:509:429:11
9:11
#22491
40K
24.85 mi15:17:334:00:329:417:42
9:00
#22317
25.2M
25.20 mi15:20:554:03:549:413:22
9:46
#22245
Finish
26.22 mi15:29:264:12:259:388:31
8:21
#22046
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi240119702970223977(Top 84%)9653(Top 79%)9653(Top 177%)
10K6.21 mi3.10 mi24056-459716-149716-1424049(Top 85%)9707(Top 79%)9707(Top 177%)
15K9.32 mi3.11 mi24025+319693+239693+2323977(Top 84%)9653(Top 79%)9653(Top 177%)
20K12.43 mi3.11 mi23857+1689617+769617+7623412(Top 82%)9374(Top 77%)9374(Top 171%)
Half13.11 mi0.68 mi23830+279599+189599+1823211(Top 82%)9256(Top 76%)9256(Top 169%)
25K15.53 mi2.42 mi23692+1389520+799520+7923120(Top 81%)9262(Top 76%)9262(Top 169%)
30K18.64 mi3.11 mi23330+3629365+1559365+15521781(Top 77%)8661(Top 71%)8661(Top 158%)
20M20.00 mi1.36 mi23174+1569296+699296+6921457(Top 76%)8607(Top 70%)8607(Top 157%)
21M21.00 mi1.00 mi23002+1729228+689228+6820140(Top 71%)7995(Top 65%)7995(Top 146%)
35K21.75 mi0.75 mi22908+949189+399189+3920177(Top 71%)8080(Top 66%)8080(Top 148%)
23M23.00 mi1.25 mi22665+2439083+1069083+10618696(Top 66%)7356(Top 60%)7356(Top 135%)
24M24.00 mi1.00 mi22491+1749005+789005+7818312(Top 64%)7214(Top 59%)7214(Top 132%)
40K24.85 mi0.85 mi22317+1748931+748931+7416396(Top 58%)6273(Top 51%)6273(Top 115%)
25.2M25.20 mi0.35 mi22245+728893+388893+3816018(Top 56%)6123(Top 50%)6123(Top 112%)
Finish26.22 mi1.02 mi22046+1998805+888805+8815340(Top 54%)5673(Top 46%)5673(Top 104%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 84%
×21stories
+97ft-345ft

Overall

23977

Females

9653

F18-39

9653

5K→10K

3.1 - 6.2 mi

Top 85%
×5stories
+79ft-138ft

Overall

24049

Females

9707

F18-39

9707

10K→15K

6.2 - 9.3 mi

Top 84%
×3stories
+67ft-78ft

Overall

23977

Females

9653

F18-39

9653

15K→20K

9.3 - 12.4 mi

Top 82%
×5stories
+106ft-86ft

Overall

23412

Females

9374

F18-39

9374

20K→Half

12.4 - 13.1 mi

Top 82%
×2stories
+19ft-37ft

Overall

23211

Females

9256

F18-39

9256

Half→25K

13.1 - 15.5 mi

Top 81%
×4stories
+66ft-88ft

Overall

23120

Females

9262

F18-39

9262

25K→30K

15.5 - 18.6 mi

Top 77%
×9stories
+181ft-148ft

Overall

21781

Females

8661

F18-39

8661

30K→20M

18.6 - 20.0 mi

Top 76%
×5stories
+64ft-50ft

Overall

21457

Females

8607

F18-39

8607

20M→21M

20.0 - 21.0 mi

Top 71%
×8stories
+106ft-24ft

Overall

20140

Females

7995

F18-39

7995

21M→35K

21.0 - 21.8 mi

Top 71%
×7stories
+17ft-86ft

Overall

20177

Females

8080

F18-39

8080

35K→23M

21.8 - 23.0 mi

Top 66%
×5stories
+23ft-63ft

Overall

18696

Females

7356

F18-39

7356

23M→24M

23.0 - 24.0 mi

Top 64%
×6stories
+12ft-82ft

Overall

18312

Females

7214

F18-39

7214

24M→40K

24.0 - 24.9 mi

Top 58%
×1story
+6ft-20ft

Overall

16396

Females

6273

F18-39

6273

40K→25.2M

24.9 - 25.2 mi

Top 56%
×1story
+13ft-16ft

Overall

16018

Females

6123

F18-39

6123

25.2M→Finish

25.2 - 26.2 mi

Top 54%
×2stories
+22ft-21ft

Overall

15340

Females

5673

F18-39

5673

Passing Analysis

Category:
Athletes Passed
2533
Passed By
568
Net Change
+1965
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24011
5K → 10K217262-45#24011#24056
10K → 15K160129+31#24056#24025
15K → 20K22759+168#24025#23857
20K → Half3710+27#23857#23830
Half → 25K18345+138#23830#23692
25K → 30K39533+362#23692#23330
30K → 20M16711+156#23330#23174
20M → 21M18210+172#23174#23002
21M → 35K995+94#23002#22908
35K → 23M2430+243#22908#22665
23M → 24M1773+174#22665#22491
24M → 40K1751+174#22491#22317
40K → 25.2M720+72#22317#22245
25.2M → Finish1990+199#22245#22046
TOTALS2533568+1965
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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