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BOSTON MARATHON 2025

Jennifer Bottoms

Bib: 18770•F

NY

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

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
8:08/mi
25:15
↑ 97↓ 3451.5%
10K· 6.21 mi
8:15/mi
50:53
↑ 79↓ 1380.4%
15K· 9.32 mi
8:21/mi
1:16:51
↑ 67↓ 78
20K· 12.43 mi
8:26/mi
1:43:04
↑ 106↓ 860.1%
Half· 13.11 mi
8:21/mi
1:48:46
↑ 19↓ 370.5%
25K· 15.53 mi
8:38/mi
2:09:42
↑ 66↓ 880.2%
30K· 18.64 mi
9:40/mi
2:39:44
↑ 181↓ 1480.2%
20M
10:56/mi
2:54:35
↑ 64↓ 500.2%
21M
11:12/mi
3:05:47
↑ 106↓ 241.6%
35K· 21.75 mi
10:48/mi
3:13:52
↑ 17↓ 861.7%
23M
10:38/mi
3:27:11
↑ 23↓ 630.6%
24M
10:02/mi
3:37:13
↓ 821.3%
40K· 24.85 mi
10:01/mi
3:45:47
↓ 200.3%
25.2M
10:50/mi
3:49:31
↑ 13↓ 160.2%
Finish· 26.22 mi
9:09/mi
3:58:50
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:48:46
Pace8:18 /mi
2nd Half
Distance13.11 mi
Time2:10:04
Pace9:55 /mi
📊Positive Split: 19.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:3625:158:0825:15
8:08
-
10K
6.21 mi11:45:1450:538:1125:38
8:15
+0:07
15K
9.32 mi12:11:121:16:518:1525:58
8:21
+0:06
20K
12.43 mi12:37:251:43:048:1826:13
8:26
+0:05
Half
13.11 mi12:43:071:48:468:185:42
8:21
-0:05
25K
15.53 mi13:04:032:09:428:2120:56
8:38
+0:17
30K
18.64 mi13:34:052:39:448:3430:02
9:40
+1:02
20M
20.00 mi13:48:562:54:358:4414:51
10:56
+1:16
21M
21.00 mi14:00:083:05:478:5111:12
11:12
+0:16
35K
21.75 mi14:08:133:13:528:558:05
10:48
-0:24
23M
23.00 mi14:21:323:27:119:0013:19
10:38
-0:10
24M
24.00 mi14:31:343:37:139:0310:02
10:02
-0:36
40K
24.85 mi14:40:083:45:479:058:34
10:01
-0:01
25.2M
25.20 mi14:43:523:49:319:063:44
10:50
+0:49
Finish
26.22 mi14:53:113:58:509:079:19
9:09
-1:41

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

8:08 /mi

Average Pace

9:07 /mi

Slowest Pace

11:12 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:09:42

54% of race

Time at Steady Pace

57:57

24% of race

Time at Slower Pace

51:11

21% of race

Average Pace: 9:07 /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 mi11:19:3625:158:0825:15
8:08
#17572
10K
6.21 mi11:45:1450:538:1125:38
8:15
#17910
15K
9.32 mi12:11:121:16:518:1525:58
8:21
#18071
20K
12.43 mi12:37:251:43:048:1826:13
8:26
#17963
Half
13.11 mi12:43:071:48:468:185:42
8:21
#17965
25K
15.53 mi13:04:032:09:428:2120:56
8:38
#17928
30K
18.64 mi13:34:052:39:448:3430:02
9:40
#18565
20M
20.00 mi13:48:562:54:358:4414:51
10:56
#19166
21M
21.00 mi14:00:083:05:478:5111:12
11:12
#19416
35K
21.75 mi14:08:133:13:528:558:05
10:48
#19704
23M
23.00 mi14:21:323:27:119:0013:19
10:38
#19959
24M
24.00 mi14:31:343:37:139:0310:02
10:02
#20059
40K
24.85 mi14:40:083:45:479:058:34
10:01
#20093
25.2M
25.20 mi14:43:523:49:319:063:44
10:50
#20108
Finish
26.22 mi14:53:113:58:509:079:19
9:09
#20129
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi175726079607918447(Top 65%)6581(Top 54%)6581(Top 363%)
10K6.21 mi3.10 mi17910-3386276-1976276-19718245(Top 64%)6455(Top 53%)6455(Top 356%)
15K9.32 mi3.11 mi18071-1616375-996375-9918447(Top 65%)6581(Top 54%)6581(Top 363%)
20K12.43 mi3.11 mi17963+1086319+566319+5617814(Top 63%)6238(Top 51%)6238(Top 344%)
Half13.11 mi0.68 mi17965-26318+16318+118402(Top 65%)6579(Top 54%)6579(Top 363%)
25K15.53 mi2.42 mi17928+376315+36315+318029(Top 63%)6450(Top 53%)6450(Top 356%)
30K18.64 mi3.11 mi18565-6376694-3796694-37920596(Top 73%)7989(Top 65%)7989(Top 441%)
20M20.00 mi1.36 mi19166-6017073-3797073-37923455(Top 83%)9653(Top 79%)9653(Top 532%)
21M21.00 mi1.00 mi19416-2507245-1727245-17221911(Top 77%)8920(Top 73%)8920(Top 492%)
35K21.75 mi0.75 mi19704-2887418-1737418-17323826(Top 84%)9957(Top 81%)9957(Top 549%)
23M23.00 mi1.25 mi19959-2557600-1827600-18222371(Top 79%)9267(Top 76%)9267(Top 511%)
24M24.00 mi1.00 mi20059-1007670-707670-7021473(Top 76%)8840(Top 72%)8840(Top 488%)
40K24.85 mi0.85 mi20093-347711-417711-4120523(Top 72%)8419(Top 69%)8419(Top 464%)
25.2M25.20 mi0.35 mi20108-157728-177728-1720145(Top 71%)8235(Top 67%)8235(Top 454%)
Finish26.22 mi1.02 mi20129-217745-177745-1719727(Top 69%)7997(Top 65%)7997(Top 441%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 65%
×21story building
+97ft-345ft

Overall

18447

Females

6581

F45-49

6581

5K→10K

3.1 - 6.2 mi

Top 64%
×5story building
+79ft-138ft

Overall

18245

Females

6455

F45-49

6455

10K→15K

6.2 - 9.3 mi

Top 65%
×3story building
+67ft-78ft

Overall

18447

Females

6581

F45-49

6581

15K→20K

9.3 - 12.4 mi

Top 63%
×5story building
+106ft-86ft

Overall

17814

Females

6238

F45-49

6238

20K→Half

12.4 - 13.1 mi

Top 65%
×2story building
+19ft-37ft

Overall

18402

Females

6579

F45-49

6579

Half→25K

13.1 - 15.5 mi

Top 63%
×4story building
+66ft-88ft

Overall

18029

Females

6450

F45-49

6450

25K→30K

15.5 - 18.6 mi

Top 73%
×9story building
+181ft-148ft

Overall

20596

Females

7989

F45-49

7989

30K→20M

18.6 - 20.0 mi

Top 83%
×5story building
+64ft-50ft

Overall

23455

Females

9653

F45-49

9653

20M→21M

20.0 - 21.0 mi

Top 77%
×8story building
+106ft-24ft

Overall

21911

Females

8920

F45-49

8920

21M→35K

21.0 - 21.8 mi

Top 84%
×7story building
+17ft-86ft

Overall

23826

Females

9957

F45-49

9957

35K→23M

21.8 - 23.0 mi

Top 79%
×5story building
+23ft-63ft

Overall

22371

Females

9267

F45-49

9267

23M→24M

23.0 - 24.0 mi

Top 76%
×6story building
+12ft-82ft

Overall

21473

Females

8840

F45-49

8840

24M→40K

24.0 - 24.9 mi

Top 72%
×1story
+6ft-20ft

Overall

20523

Females

8419

F45-49

8419

40K→25.2M

24.9 - 25.2 mi

Top 71%
×1story
+13ft-16ft

Overall

20145

Females

8235

F45-49

8235

25.2M→Finish

25.2 - 26.2 mi

Top 69%
×2story building
+22ft-21ft

Overall

19727

Females

7997

F45-49

7997

Passing Analysis

Category:
Athletes Passed
1106
Passed By
3663
Net Change
-2557
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17572
5K → 10K157495-338#17572#17910
10K → 15K134295-161#17910#18071
15K → 20K236128+108#18071#17963
20K → Half3436-2#17963#17965
Half → 25K185148+37#17965#17928
25K → 30K89726-637#17928#18565
30K → 20M18619-601#18565#19166
20M → 21M41291-250#19166#19416
21M → 35K10298-288#19416#19704
35K → 23M39294-255#19704#19959
23M → 24M36136-100#19959#20059
24M → 40K4882-34#20059#20093
40K → 25.2M2540-15#20093#20108
25.2M → Finish5475-21#20108#20129
TOTALS11063663-2557
📊

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