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BOSTON MARATHON 2025

Kim Giang

Bib: 23297•F

CA

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

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
8:37/mi
26:47
↑ 97↓ 3451.5%
10K· 6.21 mi
8:40/mi
53:42
↑ 79↓ 1380.4%
15K· 9.32 mi
8:43/mi
1:20:47
↑ 67↓ 78
20K· 12.43 mi
8:52/mi
1:48:21
↑ 106↓ 860.1%
Half· 13.11 mi
8:43/mi
1:54:18
↑ 19↓ 370.5%
25K· 15.53 mi
9:13/mi
2:16:40
↑ 66↓ 880.2%
30K· 18.64 mi
10:04/mi
2:47:56
↑ 181↓ 1480.2%
20M
9:59/mi
3:01:30
↑ 64↓ 500.2%
21M
10:46/mi
3:12:16
↑ 106↓ 241.6%
35K· 21.75 mi
9:55/mi
3:19:41
↑ 17↓ 861.7%
23M
9:59/mi
3:32:11
↑ 23↓ 630.6%
24M
9:40/mi
3:41:51
↓ 821.3%
40K· 24.85 mi
10:14/mi
3:50:36
↓ 200.3%
25.2M
10:38/mi
3:54:16
↑ 13↓ 160.2%
Finish· 26.22 mi
9:24/mi
4:03:51
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:54:18
Pace8:43 /mi
2nd Half
Distance13.11 mi
Time2:09:33
Pace9:53 /mi
📊Positive Split: 13.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:23:5126:478:3726:47
8:37
-
10K
6.21 mi11:50:4653:428:3926:55
8:40
+0:03
15K
9.32 mi12:17:511:20:478:4027:05
8:43
+0:03
20K
12.43 mi12:45:251:48:218:4327:34
8:52
+0:09
Half
13.11 mi12:51:221:54:188:435:57
8:43
-0:09
25K
15.53 mi13:13:442:16:408:4822:22
9:13
+0:30
30K
18.64 mi13:45:002:47:569:0131:16
10:04
+0:51
20M
20.00 mi13:58:343:01:309:0413:34
9:59
-0:05
21M
21.00 mi14:09:203:12:169:0910:46
10:46
+0:47
35K
21.75 mi14:16:453:19:419:117:25
9:55
-0:51
23M
23.00 mi14:29:153:32:119:1412:30
9:59
+0:04
24M
24.00 mi14:38:553:41:519:159:40
9:40
-0:19
40K
24.85 mi14:47:403:50:369:178:45
10:14
+0:34
25.2M
25.20 mi14:51:203:54:169:183:40
10:38
+0:24
Finish
26.22 mi15:00:554:03:519:189:35
9:24
-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

8:37 /mi

Average Pace

9:18 /mi

Slowest Pace

10:46 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:16:40

56% of race

Time at Steady Pace

52:44

22% of race

Time at Slower Pace

54:27

22% of race

Average Pace: 9:18 /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 mi11:23:5126:478:3726:47
8:37
#20586
10K
6.21 mi11:50:4653:428:3926:55
8:40
#20629
15K
9.32 mi12:17:511:20:478:4027:05
8:43
#20573
20K
12.43 mi12:45:251:48:218:4327:34
8:52
#20521
Half
13.11 mi12:51:221:54:188:435:57
8:43
#20523
25K
15.53 mi13:13:442:16:408:4822:22
9:13
#20618
30K
18.64 mi13:45:002:47:569:0131:16
10:04
#20916
20M
20.00 mi13:58:343:01:309:0413:34
9:59
#20915
21M
21.00 mi14:09:203:12:169:0910:46
10:46
#20910
35K
21.75 mi14:16:453:19:419:117:25
9:55
#20953
23M
23.00 mi14:29:153:32:119:1412:30
9:59
#20939
24M
24.00 mi14:38:553:41:519:159:40
9:40
#20914
40K
24.85 mi14:47:403:50:369:178:45
10:14
#20922
25.2M
25.20 mi14:51:203:54:169:183:40
10:38
#20888
Finish
26.22 mi15:00:554:03:519:189:35
9:24
#20865
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi205867856785620598(Top 73%)7773(Top 64%)7773(Top 597%)
10K6.21 mi3.10 mi20629-437849+77849+720690(Top 73%)7855(Top 64%)7855(Top 603%)
15K9.32 mi3.11 mi20573+567793+567793+5620598(Top 73%)7773(Top 64%)7773(Top 597%)
20K12.43 mi3.11 mi20521+527776+177776+1720351(Top 72%)7683(Top 63%)7683(Top 590%)
Half13.11 mi0.68 mi20523-27771+57771+520546(Top 72%)7794(Top 64%)7794(Top 598%)
25K15.53 mi2.42 mi20618-957835-647835-6420883(Top 74%)8026(Top 66%)8026(Top 616%)
30K18.64 mi3.11 mi20916-2988042-2078042-20721778(Top 77%)8658(Top 71%)8658(Top 664%)
20M20.00 mi1.36 mi20915+18052-108052-1020894(Top 74%)8300(Top 68%)8300(Top 637%)
21M21.00 mi1.00 mi20910+58074-228074-2220755(Top 73%)8319(Top 68%)8319(Top 638%)
35K21.75 mi0.75 mi20953-438106-328106-3221670(Top 76%)8857(Top 72%)8857(Top 680%)
23M23.00 mi1.25 mi20939+148132-268132-2620444(Top 72%)8265(Top 68%)8265(Top 634%)
24M24.00 mi1.00 mi20914+258134-28134-220292(Top 71%)8239(Top 67%)8239(Top 632%)
40K24.85 mi0.85 mi20922-88160-268160-2621190(Top 75%)8760(Top 72%)8760(Top 672%)
25.2M25.20 mi0.35 mi20888+348149+118149+1119542(Top 69%)7929(Top 65%)7929(Top 609%)
Finish26.22 mi1.02 mi20865+238152-38152-320846(Top 73%)8581(Top 70%)8581(Top 659%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 73%
×21story building
+97ft-345ft

Overall

20598

Females

7773

F50-54

7773

5K→10K

3.1 - 6.2 mi

Top 73%
×5story building
+79ft-138ft

Overall

20690

Females

7855

F50-54

7855

10K→15K

6.2 - 9.3 mi

Top 73%
×3story building
+67ft-78ft

Overall

20598

Females

7773

F50-54

7773

15K→20K

9.3 - 12.4 mi

Top 72%
×5story building
+106ft-86ft

Overall

20351

Females

7683

F50-54

7683

20K→Half

12.4 - 13.1 mi

Top 72%
×2story building
+19ft-37ft

Overall

20546

Females

7794

F50-54

7794

Half→25K

13.1 - 15.5 mi

Top 74%
×4story building
+66ft-88ft

Overall

20883

Females

8026

F50-54

8026

25K→30K

15.5 - 18.6 mi

Top 77%
×9story building
+181ft-148ft

Overall

21778

Females

8658

F50-54

8658

30K→20M

18.6 - 20.0 mi

Top 74%
×5story building
+64ft-50ft

Overall

20894

Females

8300

F50-54

8300

20M→21M

20.0 - 21.0 mi

Top 73%
×8story building
+106ft-24ft

Overall

20755

Females

8319

F50-54

8319

21M→35K

21.0 - 21.8 mi

Top 76%
×7story building
+17ft-86ft

Overall

21670

Females

8857

F50-54

8857

35K→23M

21.8 - 23.0 mi

Top 72%
×5story building
+23ft-63ft

Overall

20444

Females

8265

F50-54

8265

23M→24M

23.0 - 24.0 mi

Top 71%
×6story building
+12ft-82ft

Overall

20292

Females

8239

F50-54

8239

24M→40K

24.0 - 24.9 mi

Top 75%
×1story
+6ft-20ft

Overall

21190

Females

8760

F50-54

8760

40K→25.2M

24.9 - 25.2 mi

Top 69%
×1story
+13ft-16ft

Overall

19542

Females

7929

F50-54

7929

25.2M→Finish

25.2 - 26.2 mi

Top 73%
×2story building
+22ft-21ft

Overall

20846

Females

8581

F50-54

8581

Passing Analysis

Category:
Athletes Passed
1538
Passed By
1817
Net Change
-279
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20586
5K → 10K260303-43#20586#20629
10K → 15K224168+56#20629#20573
15K → 20K210158+52#20573#20521
20K → Half3739-2#20521#20523
Half → 25K117212-95#20523#20618
25K → 30K132430-298#20618#20916
30K → 20M105104+1#20916#20915
20M → 21M9893+5#20915#20910
21M → 35K4689-43#20910#20953
35K → 23M9682+14#20953#20939
23M → 24M6641+25#20939#20914
24M → 40K5765-8#20914#20922
40K → 25.2M417+34#20922#20888
25.2M → Finish4926+23#20888#20865
TOTALS15381817-279
📊

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