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BOSTON MARATHON 2025

Imyoung Hwangbo

Bib: 22986•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F50-54)
#0 / 1303
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
28:17
Rank: #22854
Start → 5K
9:06/mi
28:17 split
10K· 6.21 mi
57:19
Rank: #23286 (-432)
5K → 10K
9:21/mi
29:02 split
15K· 9.32 mi
1:27:42
Rank: #23776 (-490)
10K → 15K
9:47/mi
30:23 split
20K· 12.43 mi
1:59:54
Rank: #24158 (-382)
15K → 20K
10:22/mi
32:12 split
Half· 13.11 mi
2:06:51
Rank: #24240 (-82)
20K → Half
10:11/mi
6:57 split
25K· 15.53 mi
2:34:05
Rank: #24536 (-296)
Half → 25K
11:14/mi
27:14 split
30K· 18.64 mi
3:10:29
Rank: #24690 (-154)
25K → 30K
11:43/mi
36:24 split
20M
3:27:28
Rank: #24830 (-140)
30K → 20M
12:30/mi
16:59 split
21M
3:40:57
Rank: #24900 (-70)
20M → 21M
13:29/mi
13:29 split
35K· 21.75 mi
3:49:05
Rank: #24879 (+21)
21M → 35K
10:52/mi
8:08 split
23M
4:03:40
Rank: #24881 (-2)
35K → 23M
11:39/mi
14:35 split
24M
4:14:58
Rank: #24869 (+12)
23M → 24M
11:18/mi
11:18 split
40K· 24.85 mi
4:25:06
Rank: #24868 (+1)
24M → 40K
11:51/mi
10:08 split
25.2M
4:30:04
Rank: #24909 (-41)
40K → 25.2M
14:24/mi
4:58 split
Finish· 26.22 mi
4:40:55
Rank: #24910 (-1)
25.2M → Finish
10:39/mi
10:51 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:06:51
Pace9:41 /mi
2nd Half
Distance13.11 mi
Time2:34:04
Pace11:45 /mi
📊Positive Split: 21.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:24:3628:179:0628:17
9:06
-
10K
6.21 mi11:53:3857:199:1329:02
9:21
+0:15
15K
9.32 mi12:24:011:27:429:2530:23
9:47
+0:26
20K
12.43 mi12:56:131:59:549:3932:12
10:22
+0:35
Half
13.11 mi13:03:102:06:519:416:57
10:11
-0:11
25K
15.53 mi13:30:242:34:059:5527:14
11:14
+1:03
30K
18.64 mi14:06:483:10:2910:1336:24
11:43
+0:29
20M
20.00 mi14:23:473:27:2810:2216:59
12:30
+0:47
21M
21.00 mi14:37:163:40:5710:3113:29
13:29
+0:59
35K
21.75 mi14:45:243:49:0510:328:08
10:52
-2:37
23M
23.00 mi14:59:594:03:4010:3614:35
11:39
+0:47
24M
24.00 mi15:11:174:14:5810:3711:18
11:18
-0:21
40K
24.85 mi15:21:254:25:0610:4010:08
11:51
+0:33
25.2M
25.20 mi15:26:234:30:0410:434:58
14:24
+2:33
Finish
26.22 mi15:37:144:40:5510:4310:51
10:39
-3:45

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

9:06 /mi

Average Pace

10:43 /mi

Slowest Pace

14:24 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:06:51

45% of race

Time at Steady Pace

1:58:38

42% of race

Time at Slower Pace

35:26

13% of race

Average Pace: 10:43 /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 mi11:24:3628:179:0628:17
9:06
#22854
10K
6.21 mi11:53:3857:199:1329:02
9:21
#23286
15K
9.32 mi12:24:011:27:429:2530:23
9:47
#23776
20K
12.43 mi12:56:131:59:549:3932:12
10:22
#24158
Half
13.11 mi13:03:102:06:519:416:57
10:11
#24240
25K
15.53 mi13:30:242:34:059:5527:14
11:14
#24536
30K
18.64 mi14:06:483:10:2910:1336:24
11:43
#24690
20M
20.00 mi14:23:473:27:2810:2216:59
12:30
#24830
21M
21.00 mi14:37:163:40:5710:3113:29
13:29
#24900
35K
21.75 mi14:45:243:49:0510:328:08
10:52
#24879
23M
23.00 mi14:59:594:03:4010:3614:35
11:39
#24881
24M
24.00 mi15:11:174:14:5810:3711:18
11:18
#24869
40K
24.85 mi15:21:254:25:0610:4010:08
11:51
#24868
25.2M
25.20 mi15:26:234:30:0410:434:58
14:24
#24909
Finish
26.22 mi15:37:144:40:5510:4310:51
10:39
#24910
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi228549101910124502(Top 86%)9958(Top 81%)9958(Top 764%)
10K6.21 mi3.10 mi23286-4329310-2099310-20923660(Top 83%)9496(Top 78%)9496(Top 729%)
15K9.32 mi3.11 mi23776-4909560-2509560-25024502(Top 86%)9958(Top 81%)9958(Top 764%)
20K12.43 mi3.11 mi24158-3829780-2209780-22024937(Top 88%)10223(Top 84%)10223(Top 785%)
Half13.11 mi0.68 mi24240-829830-509830-5025205(Top 89%)10380(Top 85%)10380(Top 797%)
25K15.53 mi2.42 mi24536-2969999-1699999-16925522(Top 90%)10582(Top 87%)10582(Top 812%)
30K18.64 mi3.11 mi24690-15410109-11010109-11025166(Top 89%)10489(Top 86%)10489(Top 805%)
20M20.00 mi1.36 mi24830-14010200-9110200-9125897(Top 91%)10957(Top 90%)10957(Top 841%)
21M21.00 mi1.00 mi24900-7010254-5410254-5425646(Top 90%)10877(Top 89%)10877(Top 835%)
35K21.75 mi0.75 mi24879+2110244+1010244+1023931(Top 84%)10022(Top 82%)10022(Top 769%)
23M23.00 mi1.25 mi24881-210264-2010264-2024494(Top 86%)10346(Top 85%)10346(Top 794%)
24M24.00 mi1.00 mi24869+1210270-610270-624544(Top 86%)10405(Top 85%)10405(Top 799%)
40K24.85 mi0.85 mi24868+110281-1110281-1124684(Top 87%)10521(Top 86%)10521(Top 807%)
25.2M25.20 mi0.35 mi24909-4110310-2910310-2926627(Top 94%)11479(Top 94%)11479(Top 881%)
Finish26.22 mi1.02 mi24910-110317-710317-724594(Top 87%)10456(Top 86%)10456(Top 802%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 86%
×21stories
+97ft-345ft

Overall

24502

Females

9958

F50-54

9958

5K→10K

3.1 - 6.2 mi

Top 83%
×5stories
+79ft-138ft

Overall

23660

Females

9496

F50-54

9496

10K→15K

6.2 - 9.3 mi

Top 86%
×3stories
+67ft-78ft

Overall

24502

Females

9958

F50-54

9958

15K→20K

9.3 - 12.4 mi

Top 88%
×5stories
+106ft-86ft

Overall

24937

Females

10223

F50-54

10223

20K→Half

12.4 - 13.1 mi

Top 89%
×2stories
+19ft-37ft

Overall

25205

Females

10380

F50-54

10380

Half→25K

13.1 - 15.5 mi

Top 90%
×4stories
+66ft-88ft

Overall

25522

Females

10582

F50-54

10582

25K→30K

15.5 - 18.6 mi

Top 89%
×9stories
+181ft-148ft

Overall

25166

Females

10489

F50-54

10489

30K→20M

18.6 - 20.0 mi

Top 91%
×5stories
+64ft-50ft

Overall

25897

Females

10957

F50-54

10957

20M→21M

20.0 - 21.0 mi

Top 90%
×8stories
+106ft-24ft

Overall

25646

Females

10877

F50-54

10877

21M→35K

21.0 - 21.8 mi

Top 84%
×7stories
+17ft-86ft

Overall

23931

Females

10022

F50-54

10022

35K→23M

21.8 - 23.0 mi

Top 86%
×5stories
+23ft-63ft

Overall

24494

Females

10346

F50-54

10346

23M→24M

23.0 - 24.0 mi

Top 86%
×6stories
+12ft-82ft

Overall

24544

Females

10405

F50-54

10405

24M→40K

24.0 - 24.9 mi

Top 87%
×1story
+6ft-20ft

Overall

24684

Females

10521

F50-54

10521

40K→25.2M

24.9 - 25.2 mi

Top 94%
×1story
+13ft-16ft

Overall

26627

Females

11479

F50-54

11479

25.2M→Finish

25.2 - 26.2 mi

Top 87%
×2stories
+22ft-21ft

Overall

24594

Females

10456

F50-54

10456

Passing Analysis

Category:
Athletes Passed
589
Passed By
2645
Net Change
-2056
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22854
5K → 10K91523-432#22854#23286
10K → 15K55545-490#23286#23776
15K → 20K43425-382#23776#24158
20K → Half991-82#24158#24240
Half → 25K42338-296#24240#24536
25K → 30K81235-154#24536#24690
30K → 20M29169-140#24690#24830
20M → 21M2898-70#24830#24900
21M → 35K5231+21#24900#24879
35K → 23M4143-2#24879#24881
23M → 24M4129+12#24881#24869
24M → 40K4342+1#24869#24868
40K → 25.2M344-41#24868#24909
25.2M → Finish3132-1#24909#24910
TOTALS5892645-2056
📊

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