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BOSTON MARATHON 2025

Hao-Yun Lo

Bib: 20765•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
31:03
Rank: #25550
Start → 5K
31:03 | 10:00/mi
10K· 6.21 mi
1:04:23
Rank: #26215 (-665)
5K → 10K
33:20 | 10:44/mi
15K· 9.32 mi
1:38:48
Rank: #26457 (-242)
10K → 15K
34:25 | 11:05/mi
20K· 12.43 mi
2:13:32
Rank: #26403 (+54)
15K → 20K
34:44 | 11:11/mi
Half· 13.11 mi
2:20:38
Rank: #26359 (+44)
20K → Half
7:06 | 10:24/mi
25K· 15.53 mi
2:49:34
Rank: #26367 (-8)
Half → 25K
28:56 | 11:56/mi
30K· 18.64 mi
3:27:34
Rank: #26277 (+90)
25K → 30K
38:00 | 12:14/mi
20M
3:43:50
Rank: #26200 (+77)
30K → 20M
16:16 | 11:58/mi
21M
3:57:28
Rank: #26208 (-8)
20M → 21M
13:38 | 13:38/mi
35K· 21.75 mi
4:06:00
Rank: #26173 (+35)
21M → 35K
8:32 | 11:24/mi
23M
4:20:20
Rank: #26079 (+94)
35K → 23M
14:20 | 11:27/mi
24M
4:31:03
Rank: #25996 (+83)
23M → 24M
10:43 | 10:43/mi
40K· 24.85 mi
4:41:01
Rank: #25959 (+37)
24M → 40K
9:58 | 11:39/mi
25.2M
4:45:15
Rank: #25935 (+24)
40K → 25.2M
4:14 | 12:17/mi
Finish· 26.22 mi
4:56:31
Rank: #25941 (-6)
25.2M → Finish
11:16 | 11:03/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:20:38
Pace10:44 /mi
2nd Half
Distance13.11 mi
Time2:35:53
Pace11:53 /mi
📊Positive Split: 10.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:27:4631:0310:0031:03
10:00
-
10K
6.21 mi12:01:061:04:2310:2233:20
10:44
+0:44
15K
9.32 mi12:35:311:38:4810:3634:25
11:05
+0:21
20K
12.43 mi13:10:152:13:3210:4534:44
11:11
+0:06
Half
13.11 mi13:17:212:20:3810:447:06
10:24
-0:47
25K
15.53 mi13:46:172:49:3410:5528:56
11:56
+1:32
30K
18.64 mi14:24:173:27:3411:0838:00
12:14
+0:18
20M
20.00 mi14:40:333:43:5011:1116:16
11:58
-0:16
21M
21.00 mi14:54:113:57:2811:1813:38
13:38
+1:40
35K
21.75 mi15:02:434:06:0011:198:32
11:24
-2:14
23M
23.00 mi15:17:034:20:2011:1914:20
11:27
+0:03
24M
24.00 mi15:27:464:31:0311:1810:43
10:43
-0:44
40K
24.85 mi15:37:444:41:0111:189:58
11:39
+0:56
25.2M
25.20 mi15:41:584:45:1511:194:14
12:17
+0:38
Finish
26.22 mi15:53:144:56:3111:1911:16
11:03
-1:14

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

10:00 /mi

Average Pace

11:19 /mi

Slowest Pace

13:38 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:22:12

28% of race

Time at Steady Pace

1:53:15

38% of race

Time at Slower Pace

1:41:04

34% of race

Average Pace: 11:19 /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 mi11:27:4631:0310:0031:03
10:00
#25550
10K
6.21 mi12:01:061:04:2310:2233:20
10:44
#26215
15K
9.32 mi12:35:311:38:4810:3634:25
11:05
#26457
20K
12.43 mi13:10:152:13:3210:4534:44
11:11
#26403
Half
13.11 mi13:17:212:20:3810:447:06
10:24
#26359
25K
15.53 mi13:46:172:49:3410:5528:56
11:56
#26367
30K
18.64 mi14:24:173:27:3411:0838:00
12:14
#26277
20M
20.00 mi14:40:333:43:5011:1116:16
11:58
#26200
21M
21.00 mi14:54:113:57:2811:1813:38
13:38
#26208
35K
21.75 mi15:02:434:06:0011:198:32
11:24
#26173
23M
23.00 mi15:17:034:20:2011:1914:20
11:27
#26079
24M
24.00 mi15:27:464:31:0311:1810:43
10:43
#25996
40K
24.85 mi15:37:444:41:0111:189:58
11:39
#25959
25.2M
25.20 mi15:41:584:45:1511:194:14
12:17
#25935
Finish
26.22 mi15:53:144:56:3111:1911:16
11:03
#25941
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi25550105071050726762(Top 94%)11233(Top 92%)11233(Top 620%)
10K6.21 mi3.10 mi26215-66510888-38110888-38126646(Top 94%)11145(Top 91%)11145(Top 615%)
15K9.32 mi3.11 mi26457-24211029-14111029-14126762(Top 94%)11233(Top 92%)11233(Top 620%)
20K12.43 mi3.11 mi26403+5411012+1711012+1726267(Top 92%)10951(Top 90%)10951(Top 604%)
Half13.11 mi0.68 mi26359+4410983+2910983+2925624(Top 90%)10618(Top 87%)10618(Top 586%)
25K15.53 mi2.42 mi26367-810993-1010993-1026370(Top 93%)11062(Top 90%)11062(Top 610%)
30K18.64 mi3.11 mi26277+9010968+2510968+2525860(Top 91%)10873(Top 89%)10873(Top 600%)
20M20.00 mi1.36 mi26200+7710946+2210946+2225208(Top 89%)10588(Top 87%)10588(Top 584%)
21M21.00 mi1.00 mi26208-810964-1810964-1825797(Top 91%)10947(Top 90%)10947(Top 604%)
35K21.75 mi0.75 mi26173+3510951+1310951+1324933(Top 88%)10555(Top 86%)10555(Top 582%)
23M23.00 mi1.25 mi26079+9410906+4510906+4524149(Top 85%)10177(Top 83%)10177(Top 561%)
24M24.00 mi1.00 mi25996+8310866+4010866+4023335(Top 82%)9803(Top 80%)9803(Top 541%)
40K24.85 mi0.85 mi25959+3710854+1210854+1224387(Top 86%)10370(Top 85%)10370(Top 572%)
25.2M25.20 mi0.35 mi25935+2410849+510849+523704(Top 83%)10036(Top 82%)10036(Top 554%)
Finish26.22 mi1.02 mi25941-610860-1110860-1125461(Top 90%)10893(Top 89%)10893(Top 601%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 94%
×21stories
+97ft-345ft

Overall

26762

Females

11233

F45-49

11233

5K→10K

3.1 - 6.2 mi

Top 94%
×5stories
+79ft-138ft

Overall

26646

Females

11145

F45-49

11145

10K→15K

6.2 - 9.3 mi

Top 94%
×3stories
+67ft-78ft

Overall

26762

Females

11233

F45-49

11233

15K→20K

9.3 - 12.4 mi

Top 92%
×5stories
+106ft-86ft

Overall

26267

Females

10951

F45-49

10951

20K→Half

12.4 - 13.1 mi

Top 90%
×2stories
+19ft-37ft

Overall

25624

Females

10618

F45-49

10618

Half→25K

13.1 - 15.5 mi

Top 93%
×4stories
+66ft-88ft

Overall

26370

Females

11062

F45-49

11062

25K→30K

15.5 - 18.6 mi

Top 91%
×9stories
+181ft-148ft

Overall

25860

Females

10873

F45-49

10873

30K→20M

18.6 - 20.0 mi

Top 89%
×5stories
+64ft-50ft

Overall

25208

Females

10588

F45-49

10588

20M→21M

20.0 - 21.0 mi

Top 91%
×8stories
+106ft-24ft

Overall

25797

Females

10947

F45-49

10947

21M→35K

21.0 - 21.8 mi

Top 88%
×7stories
+17ft-86ft

Overall

24933

Females

10555

F45-49

10555

35K→23M

21.8 - 23.0 mi

Top 85%
×5stories
+23ft-63ft

Overall

24149

Females

10177

F45-49

10177

23M→24M

23.0 - 24.0 mi

Top 82%
×6stories
+12ft-82ft

Overall

23335

Females

9803

F45-49

9803

24M→40K

24.0 - 24.9 mi

Top 86%
×1story
+6ft-20ft

Overall

24387

Females

10370

F45-49

10370

40K→25.2M

24.9 - 25.2 mi

Top 83%
×1story
+13ft-16ft

Overall

23704

Females

10036

F45-49

10036

25.2M→Finish

25.2 - 26.2 mi

Top 90%
×2stories
+22ft-21ft

Overall

25461

Females

10893

F45-49

10893

Passing Analysis

Category:
Athletes Passed
985
Passed By
1376
Net Change
-391
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25550
5K → 10K38703-665#25550#26215
10K → 15K58300-242#26215#26457
15K → 20K14490+54#26457#26403
20K → Half506+44#26403#26359
Half → 25K8795-8#26359#26367
25K → 30K14454+90#26367#26277
30K → 20M9215+77#26277#26200
20M → 21M4250-8#26200#26208
21M → 35K4914+35#26208#26173
35K → 23M995+94#26173#26079
23M → 24M863+83#26079#25996
24M → 40K4710+37#25996#25959
40K → 25.2M284+24#25959#25935
25.2M → Finish2127-6#25935#25941
TOTALS9851376-391
📊

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