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BOSTON MARATHON 2025

Kuanting Chen

Bib: 22814•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F45-49)
#0 / 1813
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:01
Rank: #19170
Start → 5K
8:22/mi
26:01 split
10K· 6.21 mi
52:44
Rank: #19763 (-593)
5K → 10K
8:36/mi
26:43 split
15K· 9.32 mi
1:20:07
Rank: #20207 (-444)
10K → 15K
8:49/mi
27:23 split
20K· 12.43 mi
1:49:47
Rank: #21093 (-886)
15K → 20K
9:33/mi
29:40 split
Half· 13.11 mi
1:55:55
Rank: #21142 (-49)
20K → Half
8:59/mi
6:08 split
25K· 15.53 mi
2:19:43
Rank: #21527 (-385)
Half → 25K
9:49/mi
23:48 split
30K· 18.64 mi
2:50:32
Rank: #21539 (-12)
25K → 30K
9:55/mi
30:49 split
20M
3:05:14
Rank: #21730 (-191)
30K → 20M
10:49/mi
14:42 split
21M
3:17:08
Rank: #21874 (-144)
20M → 21M
11:54/mi
11:54 split
35K· 21.75 mi
3:25:20
Rank: #21974 (-100)
21M → 35K
10:58/mi
8:12 split
23M
3:39:02
Rank: #22040 (-66)
35K → 23M
10:57/mi
13:42 split
24M
3:49:03
Rank: #22003 (+37)
23M → 24M
10:01/mi
10:01 split
40K· 24.85 mi
3:58:07
Rank: #22001 (+2)
24M → 40K
10:36/mi
9:04 split
25.2M
4:02:28
Rank: #22055 (-54)
40K → 25.2M
12:37/mi
4:21 split
Finish· 26.22 mi
4:14:08
Rank: #22241 (-186)
25.2M → Finish
11:27/mi
11:40 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:55:55
Pace8:51 /mi
2nd Half
Distance13.11 mi
Time2:18:13
Pace10:33 /mi
📊Positive Split: 19.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:23:0226:018:2226:01
8:22
-
10K
6.21 mi11:49:4552:448:2926:43
8:36
+0:14
15K
9.32 mi12:17:081:20:078:3627:23
8:49
+0:13
20K
12.43 mi12:46:481:49:478:5029:40
9:33
+0:44
Half
13.11 mi12:52:561:55:558:516:08
8:59
-0:34
25K
15.53 mi13:16:442:19:439:0023:48
9:49
+0:50
30K
18.64 mi13:47:332:50:329:0930:49
9:55
+0:06
20M
20.00 mi14:02:153:05:149:1614:42
10:49
+0:54
21M
21.00 mi14:14:093:17:089:2311:54
11:54
+1:05
35K
21.75 mi14:22:213:25:209:268:12
10:58
-0:56
23M
23.00 mi14:36:033:39:029:3113:42
10:57
-0:01
24M
24.00 mi14:46:043:49:039:3310:01
10:01
-0:56
40K
24.85 mi14:55:083:58:079:359:04
10:36
+0:35
25.2M
25.20 mi14:59:294:02:289:374:21
12:37
+2:01
Finish
26.22 mi15:11:094:14:089:4211:40
11:27
-1:10

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

8:22 /mi

Average Pace

9:42 /mi

Slowest Pace

12:37 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:26:15

34% of race

Time at Steady Pace

1:43:22

41% of race

Time at Slower Pace

1:04:31

25% of race

Average Pace: 9:42 /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 mi11:23:0226:018:2226:01
8:22
#19170
10K
6.21 mi11:49:4552:448:2926:43
8:36
#19763
15K
9.32 mi12:17:081:20:078:3627:23
8:49
#20207
20K
12.43 mi12:46:481:49:478:5029:40
9:33
#21093
Half
13.11 mi12:52:561:55:558:516:08
8:59
#21142
25K
15.53 mi13:16:442:19:439:0023:48
9:49
#21527
30K
18.64 mi13:47:332:50:329:0930:49
9:55
#21539
20M
20.00 mi14:02:153:05:149:1614:42
10:49
#21730
21M
21.00 mi14:14:093:17:089:2311:54
11:54
#21874
35K
21.75 mi14:22:213:25:209:268:12
10:58
#21974
23M
23.00 mi14:36:033:39:029:3113:42
10:57
#22040
24M
24.00 mi14:46:043:49:039:3310:01
10:01
#22003
40K
24.85 mi14:55:083:58:079:359:04
10:36
#22001
25.2M
25.20 mi14:59:294:02:289:374:21
12:37
#22055
Finish
26.22 mi15:11:094:14:089:4211:40
11:27
#22241
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi191707004700421098(Top 74%)8057(Top 66%)8057(Top 444%)
10K6.21 mi3.10 mi19763-5937333-3297333-32920362(Top 72%)7674(Top 63%)7674(Top 423%)
15K9.32 mi3.11 mi20207-4447589-2567589-25621098(Top 74%)8057(Top 66%)8057(Top 444%)
20K12.43 mi3.11 mi21093-8868081-4928081-49223052(Top 81%)9177(Top 75%)9177(Top 506%)
Half13.11 mi0.68 mi21142-498104-238104-2321834(Top 77%)8506(Top 70%)8506(Top 469%)
25K15.53 mi2.42 mi21527-3858339-2358339-23522806(Top 80%)9088(Top 74%)9088(Top 501%)
30K18.64 mi3.11 mi21539-128374-358374-3521369(Top 75%)8435(Top 69%)8435(Top 465%)
20M20.00 mi1.36 mi21730-1918485-1118485-11123211(Top 82%)9532(Top 78%)9532(Top 526%)
21M21.00 mi1.00 mi21874-1448591-1068591-10623415(Top 82%)9722(Top 80%)9722(Top 536%)
35K21.75 mi0.75 mi21974-1008668-778668-7724121(Top 85%)10124(Top 83%)10124(Top 558%)
23M23.00 mi1.25 mi22040-668742-748742-7423098(Top 81%)9654(Top 79%)9654(Top 532%)
24M24.00 mi1.00 mi22003+378739+38739+321432(Top 75%)8827(Top 72%)8827(Top 487%)
40K24.85 mi0.85 mi22001+28757-188757-1822216(Top 78%)9317(Top 76%)9317(Top 514%)
25.2M25.20 mi0.35 mi22055-548796-398796-3924428(Top 86%)10386(Top 85%)10386(Top 573%)
Finish26.22 mi1.02 mi22241-1868920-1248920-12426070(Top 92%)11179(Top 91%)11179(Top 617%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 74%
×21story building
+97ft-345ft

Overall

21098

Females

8057

F45-49

8057

5K→10K

3.1 - 6.2 mi

Top 72%
×5story building
+79ft-138ft

Overall

20362

Females

7674

F45-49

7674

10K→15K

6.2 - 9.3 mi

Top 74%
×3story building
+67ft-78ft

Overall

21098

Females

8057

F45-49

8057

15K→20K

9.3 - 12.4 mi

Top 81%
×5story building
+106ft-86ft

Overall

23052

Females

9177

F45-49

9177

20K→Half

12.4 - 13.1 mi

Top 77%
×2story building
+19ft-37ft

Overall

21834

Females

8506

F45-49

8506

Half→25K

13.1 - 15.5 mi

Top 80%
×4story building
+66ft-88ft

Overall

22806

Females

9088

F45-49

9088

25K→30K

15.5 - 18.6 mi

Top 75%
×9story building
+181ft-148ft

Overall

21369

Females

8435

F45-49

8435

30K→20M

18.6 - 20.0 mi

Top 82%
×5story building
+64ft-50ft

Overall

23211

Females

9532

F45-49

9532

20M→21M

20.0 - 21.0 mi

Top 82%
×8story building
+106ft-24ft

Overall

23415

Females

9722

F45-49

9722

21M→35K

21.0 - 21.8 mi

Top 85%
×7story building
+17ft-86ft

Overall

24121

Females

10124

F45-49

10124

35K→23M

21.8 - 23.0 mi

Top 81%
×5story building
+23ft-63ft

Overall

23098

Females

9654

F45-49

9654

23M→24M

23.0 - 24.0 mi

Top 75%
×6story building
+12ft-82ft

Overall

21432

Females

8827

F45-49

8827

24M→40K

24.0 - 24.9 mi

Top 78%
×1story
+6ft-20ft

Overall

22216

Females

9317

F45-49

9317

40K→25.2M

24.9 - 25.2 mi

Top 86%
×1story
+13ft-16ft

Overall

24428

Females

10386

F45-49

10386

25.2M→Finish

25.2 - 26.2 mi

Top 92%
×2story building
+22ft-21ft

Overall

26070

Females

11179

F45-49

11179

Passing Analysis

Category:
Athletes Passed
782
Passed By
3853
Net Change
-3071
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19170
5K → 10K85678-593#19170#19763
10K → 15K82526-444#19763#20207
15K → 20K48934-886#20207#21093
20K → Half2069-49#21093#21142
Half → 25K50435-385#21142#21527
25K → 30K196208-12#21527#21539
30K → 20M39230-191#21539#21730
20M → 21M35179-144#21730#21874
21M → 35K19119-100#21874#21974
35K → 23M61127-66#21974#22040
23M → 24M7336+37#22040#22003
24M → 40K5048+2#22003#22001
40K → 25.2M1165-54#22001#22055
25.2M → Finish13199-186#22055#22241
TOTALS7823853-3071
📊

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