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BOSTON MARATHON 2025

Hairong Zhao

Bib: 24357•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F55-59)
#0 / 994
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
8:19/mi
25:50
↑ 97↓ 3451.5%
10K· 6.21 mi
8:32/mi
52:20
↑ 79↓ 1380.4%
15K· 9.32 mi
8:45/mi
1:19:30
↑ 67↓ 78
20K· 12.43 mi
9:24/mi
1:48:41
↑ 106↓ 860.1%
Half· 13.11 mi
9:13/mi
1:54:58
↑ 19↓ 370.5%
25K· 15.53 mi
9:47/mi
2:18:42
↑ 66↓ 880.2%
30K· 18.64 mi
10:13/mi
2:50:27
↑ 181↓ 1480.2%
20M
10:23/mi
3:04:34
↑ 64↓ 500.2%
21M
11:45/mi
3:16:19
↑ 106↓ 241.6%
35K· 21.75 mi
9:45/mi
3:23:37
↑ 17↓ 861.7%
23M
10:35/mi
3:36:52
↑ 23↓ 630.6%
24M
10:46/mi
3:47:38
↓ 821.3%
40K· 24.85 mi
10:33/mi
3:56:39
↓ 200.3%
25.2M
11:59/mi
4:00:47
↑ 13↓ 160.2%
Finish· 26.22 mi
10:26/mi
4:11:25
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:54:58
Pace8:46 /mi
2nd Half
Distance13.11 mi
Time2:16:27
Pace10:25 /mi
📊Positive Split: 18.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:23:4225:508:1925:50
8:19
-
10K
6.21 mi11:50:1252:208:2526:30
8:32
+0:13
15K
9.32 mi12:17:221:19:308:3227:10
8:45
+0:13
20K
12.43 mi12:46:331:48:418:4529:11
9:24
+0:39
Half
13.11 mi12:52:501:54:588:466:17
9:13
-0:11
25K
15.53 mi13:16:342:18:428:5623:44
9:47
+0:34
30K
18.64 mi13:48:192:50:279:0931:45
10:13
+0:26
20M
20.00 mi14:02:263:04:349:1414:07
10:23
+0:10
21M
21.00 mi14:14:113:16:199:2111:45
11:45
+1:22
35K
21.75 mi14:21:293:23:379:227:18
9:45
-2:00
23M
23.00 mi14:34:443:36:529:2613:15
10:35
+0:50
24M
24.00 mi14:45:303:47:389:2910:46
10:46
+0:11
40K
24.85 mi14:54:313:56:399:319:01
10:33
-0:13
25.2M
25.20 mi14:58:394:00:479:334:08
11:59
+1:26
Finish
26.22 mi15:09:174:11:259:3610:38
10:26
-1:33

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

8:19 /mi

Average Pace

9:36 /mi

Slowest Pace

11:59 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:54:58

46% of race

Time at Steady Pace

1:49:48

44% of race

Time at Slower Pace

26:39

11% of race

Average Pace: 9:35 /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 mi11:23:4225:508:1925:50
8:19
#18819
10K
6.21 mi11:50:1252:208:2526:30
8:32
#19386
15K
9.32 mi12:17:221:19:308:3227:10
8:45
#19863
20K
12.43 mi12:46:331:48:418:4529:11
9:24
#20663
Half
13.11 mi12:52:501:54:588:466:17
9:13
#20779
25K
15.53 mi13:16:342:18:428:5623:44
9:47
#21252
30K
18.64 mi13:48:192:50:279:0931:45
10:13
#21514
20M
20.00 mi14:02:263:04:349:1414:07
10:23
#21589
21M
21.00 mi14:14:113:16:199:2111:45
11:45
#21714
35K
21.75 mi14:21:293:23:379:227:18
9:45
#21688
23M
23.00 mi14:34:443:36:529:2613:15
10:35
#21720
24M
24.00 mi14:45:303:47:389:2910:46
10:46
#21805
40K
24.85 mi14:54:313:56:399:319:01
10:33
#21808
25.2M
25.20 mi14:58:394:00:479:334:08
11:59
#21831
Finish
26.22 mi15:09:174:11:259:3610:38
10:26
#21918
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi188196808680820740(Top 73%)7854(Top 64%)7854(Top 790%)
10K6.21 mi3.10 mi19386-5677113-3057113-30519987(Top 70%)7459(Top 61%)7459(Top 750%)
15K9.32 mi3.11 mi19863-4777389-2767389-27620740(Top 73%)7854(Top 64%)7854(Top 790%)
20K12.43 mi3.11 mi20663-8007848-4597848-45922565(Top 79%)8898(Top 73%)8898(Top 895%)
Half13.11 mi0.68 mi20779-1167918-707918-7022654(Top 80%)8958(Top 73%)8958(Top 901%)
25K15.53 mi2.42 mi21252-4738182-2648182-26422737(Top 80%)9052(Top 74%)9052(Top 911%)
30K18.64 mi3.11 mi21514-2628363-1818363-18122236(Top 78%)8896(Top 73%)8896(Top 895%)
20M20.00 mi1.36 mi21589-758411-488411-4822120(Top 78%)8964(Top 73%)8964(Top 902%)
21M21.00 mi1.00 mi21714-1258501-908501-9023127(Top 81%)9554(Top 78%)9554(Top 961%)
35K21.75 mi0.75 mi21688+268504-38504-321217(Top 75%)8625(Top 71%)8625(Top 868%)
23M23.00 mi1.25 mi21720-328560-568560-5622227(Top 78%)9183(Top 75%)9183(Top 924%)
24M24.00 mi1.00 mi21805-858632-728632-7223502(Top 83%)9876(Top 81%)9876(Top 994%)
40K24.85 mi0.85 mi21808-38657-258657-2522052(Top 78%)9224(Top 75%)9224(Top 928%)
25.2M25.20 mi0.35 mi21831-238673-168673-1623218(Top 82%)9769(Top 80%)9769(Top 983%)
Finish26.22 mi1.02 mi21918-878733-608733-6024144(Top 85%)10238(Top 84%)10238(Top 1030%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 73%
×21story building
+97ft-345ft

Overall

20740

Females

7854

F55-59

7854

5K→10K

3.1 - 6.2 mi

Top 70%
×5story building
+79ft-138ft

Overall

19987

Females

7459

F55-59

7459

10K→15K

6.2 - 9.3 mi

Top 73%
×3story building
+67ft-78ft

Overall

20740

Females

7854

F55-59

7854

15K→20K

9.3 - 12.4 mi

Top 79%
×5story building
+106ft-86ft

Overall

22565

Females

8898

F55-59

8898

20K→Half

12.4 - 13.1 mi

Top 80%
×2story building
+19ft-37ft

Overall

22654

Females

8958

F55-59

8958

Half→25K

13.1 - 15.5 mi

Top 80%
×4story building
+66ft-88ft

Overall

22737

Females

9052

F55-59

9052

25K→30K

15.5 - 18.6 mi

Top 78%
×9story building
+181ft-148ft

Overall

22236

Females

8896

F55-59

8896

30K→20M

18.6 - 20.0 mi

Top 78%
×5story building
+64ft-50ft

Overall

22120

Females

8964

F55-59

8964

20M→21M

20.0 - 21.0 mi

Top 81%
×8story building
+106ft-24ft

Overall

23127

Females

9554

F55-59

9554

21M→35K

21.0 - 21.8 mi

Top 75%
×7story building
+17ft-86ft

Overall

21217

Females

8625

F55-59

8625

35K→23M

21.8 - 23.0 mi

Top 78%
×5story building
+23ft-63ft

Overall

22227

Females

9183

F55-59

9183

23M→24M

23.0 - 24.0 mi

Top 83%
×6story building
+12ft-82ft

Overall

23502

Females

9876

F55-59

9876

24M→40K

24.0 - 24.9 mi

Top 78%
×1story
+6ft-20ft

Overall

22052

Females

9224

F55-59

9224

40K→25.2M

24.9 - 25.2 mi

Top 82%
×1story
+13ft-16ft

Overall

23218

Females

9769

F55-59

9769

25.2M→Finish

25.2 - 26.2 mi

Top 85%
×2story building
+22ft-21ft

Overall

24144

Females

10238

F55-59

10238

Passing Analysis

Category:
Athletes Passed
775
Passed By
3874
Net Change
-3099
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18819
5K → 10K91658-567#18819#19386
10K → 15K83560-477#19386#19863
15K → 20K48848-800#19863#20663
20K → Half9125-116#20663#20779
Half → 25K56529-473#20779#21252
25K → 30K126388-262#21252#21514
30K → 20M69144-75#21514#21589
20M → 21M52177-125#21589#21714
21M → 35K5428+26#21714#21688
35K → 23M73105-32#21688#21720
23M → 24M26111-85#21720#21805
24M → 40K5154-3#21805#21808
40K → 25.2M1437-23#21808#21831
25.2M → Finish23110-87#21831#21918
TOTALS7753874-3099
📊

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