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BOSTON MARATHON 2025

Kylie Simpson

Bib: 29300•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

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
12:03/mi
37:26
↑ 97↓ 3451.5%
10K· 6.21 mi
12:40/mi
1:16:48
↑ 79↓ 1380.4%
15K· 9.32 mi
12:50/mi
1:56:40
↑ 67↓ 78
20K· 12.43 mi
13:24/mi
2:38:18
↑ 106↓ 860.1%
Half· 13.11 mi
13:17/mi
2:47:22
↑ 19↓ 370.5%
25K· 15.53 mi
14:33/mi
3:22:39
↑ 66↓ 880.2%
30K· 18.64 mi
14:46/mi
4:08:31
↑ 181↓ 1480.2%
20M
14:33/mi
4:28:18
↑ 64↓ 500.2%
21M
15:27/mi
4:43:45
↑ 106↓ 241.6%
35K· 21.75 mi
14:30/mi
4:54:36
↑ 17↓ 861.7%
23M
14:49/mi
5:13:09
↑ 23↓ 630.6%
24M
14:46/mi
5:27:55
↓ 821.3%
40K· 24.85 mi
15:02/mi
5:40:46
↓ 200.3%
25.2M
16:11/mi
5:46:21
↑ 13↓ 160.2%
Finish· 26.22 mi
14:27/mi
6:01:05
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:47:22
Pace12:46 /mi
2nd Half
Distance13.11 mi
Time3:13:43
Pace14:47 /mi
📊Positive Split: 15.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:55:0137:2612:0337:26
12:03
-
10K
6.21 mi12:34:231:16:4812:2239:22
12:40
+0:37
15K
9.32 mi13:14:151:56:4012:3139:52
12:50
+0:10
20K
12.43 mi13:55:532:38:1812:4441:38
13:24
+0:34
Half
13.11 mi14:04:572:47:2212:469:04
13:17
-0:07
25K
15.53 mi14:40:143:22:3913:0335:17
14:33
+1:16
30K
18.64 mi15:26:064:08:3113:2045:52
14:46
+0:13
20M
20.00 mi15:45:534:28:1813:2519:47
14:33
-0:13
21M
21.00 mi16:01:204:43:4513:3115:27
15:27
+0:54
35K
21.75 mi16:12:114:54:3613:3310:51
14:30
-0:57
23M
23.00 mi16:30:445:13:0913:3718:33
14:49
+0:19
24M
24.00 mi16:45:305:27:5513:4014:46
14:46
-0:03
40K
24.85 mi16:58:215:40:4613:4312:51
15:02
+0:16
25.2M
25.20 mi17:03:565:46:2113:455:35
16:11
+1:09
Finish
26.22 mi17:18:406:01:0513:4714:44
14:27
-1:44

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

12:03 /mi

Average Pace

13:47 /mi

Slowest Pace

16:11 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:47:22

46% of race

Time at Steady Pace

2:52:41

48% of race

Time at Slower Pace

21:02

6% of race

Average Pace: 13:46 /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 mi11:55:0137:2612:0337:26
12:03
#28242
10K
6.21 mi12:34:231:16:4812:2239:22
12:40
#28254
15K
9.32 mi13:14:151:56:4012:3139:52
12:50
#28237
20K
12.43 mi13:55:532:38:1812:4441:38
13:24
#28215
Half
13.11 mi14:04:572:47:2212:469:04
13:17
#28216
25K
15.53 mi14:40:143:22:3913:0335:17
14:33
#28224
30K
18.64 mi15:26:064:08:3113:2045:52
14:46
#28217
20M
20.00 mi15:45:534:28:1813:2519:47
14:33
#28199
21M
21.00 mi16:01:204:43:4513:3115:27
15:27
#28184
35K
21.75 mi16:12:114:54:3613:3310:51
14:30
#28190
23M
23.00 mi16:30:445:13:0913:3718:33
14:49
#28189
24M
24.00 mi16:45:305:27:5513:4014:46
14:46
#28196
40K
24.85 mi16:58:215:40:4613:4312:51
15:02
#28193
25.2M
25.20 mi17:03:565:46:2113:455:35
16:11
#28194
Finish
26.22 mi17:18:406:01:0513:4714:44
14:27
#28212
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi28242121171211728101(Top 99%)12043(Top 98%)12043(Top 924%)
10K6.21 mi3.10 mi28254-1212132-1512132-1528252(Top 99%)12138(Top 99%)12138(Top 932%)
15K9.32 mi3.11 mi28237+1712124+812124+828101(Top 99%)12043(Top 98%)12043(Top 924%)
20K12.43 mi3.11 mi28215+2212117+712117+728025(Top 99%)12012(Top 98%)12012(Top 922%)
Half13.11 mi0.68 mi28216-112118-112118-128103(Top 99%)12072(Top 99%)12072(Top 926%)
25K15.53 mi2.42 mi28224-812122-412122-428114(Top 99%)12080(Top 99%)12080(Top 927%)
30K18.64 mi3.11 mi28217+712125-312125-327930(Top 98%)12017(Top 98%)12017(Top 922%)
20M20.00 mi1.36 mi28199+1812115+1012115+1027665(Top 97%)11896(Top 97%)11896(Top 913%)
21M21.00 mi1.00 mi28184+1512111+412111+427489(Top 97%)11812(Top 97%)11812(Top 907%)
35K21.75 mi0.75 mi28190-612115-412115-427919(Top 98%)12051(Top 99%)12051(Top 925%)
23M23.00 mi1.25 mi28189+112121-612121-627836(Top 98%)12018(Top 98%)12018(Top 922%)
24M24.00 mi1.00 mi28196-712129-812129-827983(Top 99%)12094(Top 99%)12094(Top 928%)
40K24.85 mi0.85 mi28193+3121291212927773(Top 98%)12001(Top 98%)12001(Top 921%)
25.2M25.20 mi0.35 mi28194-112130-112130-127801(Top 98%)12024(Top 98%)12024(Top 923%)
Finish26.22 mi1.02 mi28212-1812140-1012140-1028159(Top 99%)12148(Top 99%)12148(Top 932%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 99%
×21story building
+97ft-345ft

Overall

28101

Females

12043

F50-54

12043

5K→10K

3.1 - 6.2 mi

Top 99%
×5story building
+79ft-138ft

Overall

28252

Females

12138

F50-54

12138

10K→15K

6.2 - 9.3 mi

Top 99%
×3story building
+67ft-78ft

Overall

28101

Females

12043

F50-54

12043

15K→20K

9.3 - 12.4 mi

Top 99%
×5story building
+106ft-86ft

Overall

28025

Females

12012

F50-54

12012

20K→Half

12.4 - 13.1 mi

Top 99%
×2story building
+19ft-37ft

Overall

28103

Females

12072

F50-54

12072

Half→25K

13.1 - 15.5 mi

Top 99%
×4story building
+66ft-88ft

Overall

28114

Females

12080

F50-54

12080

25K→30K

15.5 - 18.6 mi

Top 98%
×9story building
+181ft-148ft

Overall

27930

Females

12017

F50-54

12017

30K→20M

18.6 - 20.0 mi

Top 97%
×5story building
+64ft-50ft

Overall

27665

Females

11896

F50-54

11896

20M→21M

20.0 - 21.0 mi

Top 97%
×8story building
+106ft-24ft

Overall

27489

Females

11812

F50-54

11812

21M→35K

21.0 - 21.8 mi

Top 98%
×7story building
+17ft-86ft

Overall

27919

Females

12051

F50-54

12051

35K→23M

21.8 - 23.0 mi

Top 98%
×5story building
+23ft-63ft

Overall

27836

Females

12018

F50-54

12018

23M→24M

23.0 - 24.0 mi

Top 99%
×6story building
+12ft-82ft

Overall

27983

Females

12094

F50-54

12094

24M→40K

24.0 - 24.9 mi

Top 98%
×1story
+6ft-20ft

Overall

27773

Females

12001

F50-54

12001

40K→25.2M

24.9 - 25.2 mi

Top 98%
×1story
+13ft-16ft

Overall

27801

Females

12024

F50-54

12024

25.2M→Finish

25.2 - 26.2 mi

Top 99%
×2story building
+22ft-21ft

Overall

28159

Females

12148

F50-54

12148

Passing Analysis

Category:
Athletes Passed
245
Passed By
215
Net Change
+30
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#28242
5K → 10K2739-12#28242#28254
10K → 15K3215+17#28254#28237
15K → 20K4220+22#28237#28215
20K → Half910-1#28215#28216
Half → 25K2230-8#28216#28224
25K → 30K3023+7#28224#28217
30K → 20M268+18#28217#28199
20M → 21M194+15#28199#28184
21M → 35K410-6#28184#28190
35K → 23M1110+1#28190#28189
23M → 24M613-7#28189#28196
24M → 40K129+3#28196#28193
40K → 25.2M23-1#28193#28194
25.2M → Finish321-18#28194#28212
TOTALS245215+30
📊

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