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BOSTON MARATHON 2025

Jenny Demarest

Bib: 25623•F

TX

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F65-69)
#0 / 222
Top 47%
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
9:57/mi
30:55
↑ 97↓ 3451.5%
10K· 6.21 mi
9:58/mi
1:01:54
↑ 79↓ 1380.4%
15K· 9.32 mi
10:07/mi
1:33:21
↑ 67↓ 78
20K· 12.43 mi
10:08/mi
2:04:50
↑ 106↓ 860.1%
Half· 13.11 mi
9:48/mi
2:11:31
↑ 19↓ 370.5%
25K· 15.53 mi
10:08/mi
2:36:04
↑ 66↓ 880.2%
30K· 18.64 mi
10:05/mi
3:07:25
↑ 181↓ 1480.2%
20M
10:42/mi
3:21:57
↑ 64↓ 500.2%
21M
11:03/mi
3:33:00
↑ 106↓ 241.6%
35K· 21.75 mi
10:56/mi
3:41:11
↑ 17↓ 861.7%
23M
10:41/mi
3:54:33
↑ 23↓ 630.6%
24M
10:37/mi
4:05:10
↓ 821.3%
40K· 24.85 mi
10:57/mi
4:14:32
↓ 200.3%
25.2M
12:40/mi
4:18:54
↑ 13↓ 160.2%
Finish· 26.22 mi
9:34/mi
4:28:39
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:11:31
Pace10:02 /mi
2nd Half
Distance13.11 mi
Time2:17:08
Pace10:28 /mi
📊Positive Split: 4.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:46:3530:559:5730:55
9:57
-
10K
6.21 mi12:17:341:01:549:5830:59
9:58
+0:01
15K
9.32 mi12:49:011:33:2110:0131:27
10:07
+0:09
20K
12.43 mi13:20:302:04:5010:0331:29
10:08
+0:01
Half
13.11 mi13:27:112:11:3110:026:41
9:48
-0:20
25K
15.53 mi13:51:442:36:0410:0324:33
10:08
+0:20
30K
18.64 mi14:23:053:07:2510:0331:21
10:05
-0:03
20M
20.00 mi14:37:373:21:5710:0614:32
10:42
+0:37
21M
21.00 mi14:48:403:33:0010:0911:03
11:03
+0:21
35K
21.75 mi14:56:513:41:1110:108:11
10:56
-0:07
23M
23.00 mi15:10:133:54:3310:1213:22
10:41
-0:15
24M
24.00 mi15:20:504:05:1010:1310:37
10:37
-0:04
40K
24.85 mi15:30:124:14:3210:149:22
10:57
+0:20
25.2M
25.20 mi15:34:344:18:5410:164:22
12:40
+1:43
Finish
26.22 mi15:44:194:28:3910:159:45
9:34
-3:06

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

9:34 /mi

Average Pace

10:15 /mi

Slowest Pace

12:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

9:45

4% of race

Time at Steady Pace

3:07:25

70% of race

Time at Slower Pace

1:11:29

27% of race

Average Pace: 10:15 /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 mi11:46:3530:559:5730:55
9:57
#25472
10K
6.21 mi12:17:341:01:549:5830:59
9:58
#25346
15K
9.32 mi12:49:011:33:2110:0131:27
10:07
#25324
20K
12.43 mi13:20:302:04:5010:0331:29
10:08
#25122
Half
13.11 mi13:27:112:11:3110:026:41
9:48
#25082
25K
15.53 mi13:51:442:36:0410:0324:33
10:08
#24815
30K
18.64 mi14:23:053:07:2510:0331:21
10:05
#24353
20M
20.00 mi14:37:373:21:5710:0614:32
10:42
#24255
21M
21.00 mi14:48:403:33:0010:0911:03
11:03
#24100
35K
21.75 mi14:56:513:41:1110:108:11
10:56
#24099
23M
23.00 mi15:10:133:54:3310:1213:22
10:41
#23995
24M
24.00 mi15:20:504:05:1010:1310:37
10:37
#23952
40K
24.85 mi15:30:124:14:3210:149:22
10:57
#23929
25.2M
25.20 mi15:34:344:18:5410:164:22
12:40
#23948
Finish
26.22 mi15:44:194:28:3910:159:45
9:34
#23876
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF65-69Seg. OverallSeg. FemalesSeg. F65-69
5K3.11 mi3.11 mi25472104631046325255(Top 89%)10373(Top 85%)10373(Top 4673%)
10K6.21 mi3.10 mi25346+12610421+4210421+4225254(Top 89%)10374(Top 85%)10374(Top 4673%)
15K9.32 mi3.11 mi25324+2210399+2210399+2225255(Top 89%)10373(Top 85%)10373(Top 4673%)
20K12.43 mi3.11 mi25122+20210303+9610303+9624497(Top 86%)9981(Top 82%)9981(Top 4496%)
Half13.11 mi0.68 mi25082+4010282+2110282+2124384(Top 86%)9928(Top 81%)9928(Top 4472%)
25K15.53 mi2.42 mi24815+26710154+12810154+12823569(Top 83%)9518(Top 78%)9518(Top 4287%)
30K18.64 mi3.11 mi24353+4629923+2319923+23121883(Top 77%)8718(Top 71%)8718(Top 3927%)
20M20.00 mi1.36 mi24255+989886+379886+3722947(Top 81%)9395(Top 77%)9395(Top 4232%)
21M21.00 mi1.00 mi24100+1559821+659821+6521557(Top 76%)8747(Top 72%)8747(Top 3940%)
35K21.75 mi0.75 mi24099+19823-29823-224089(Top 85%)10111(Top 83%)10111(Top 4555%)
23M23.00 mi1.25 mi23995+1049795+289795+2822485(Top 79%)9334(Top 76%)9334(Top 4205%)
24M24.00 mi1.00 mi23952+439780+159780+1523128(Top 81%)9698(Top 79%)9698(Top 4368%)
40K24.85 mi0.85 mi23929+239781-19781-123058(Top 81%)9738(Top 80%)9738(Top 4386%)
25.2M25.20 mi0.35 mi23948-199801-209801-2024517(Top 86%)10425(Top 85%)10425(Top 4696%)
Finish26.22 mi1.02 mi23876+729771+309771+3021458(Top 76%)8896(Top 73%)8896(Top 4007%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 89%
×21story building
+97ft-345ft

Overall

25255

Females

10373

F65-69

10373

5K→10K

3.1 - 6.2 mi

Top 89%
×5story building
+79ft-138ft

Overall

25254

Females

10374

F65-69

10374

10K→15K

6.2 - 9.3 mi

Top 89%
×3story building
+67ft-78ft

Overall

25255

Females

10373

F65-69

10373

15K→20K

9.3 - 12.4 mi

Top 86%
×5story building
+106ft-86ft

Overall

24497

Females

9981

F65-69

9981

20K→Half

12.4 - 13.1 mi

Top 86%
×2story building
+19ft-37ft

Overall

24384

Females

9928

F65-69

9928

Half→25K

13.1 - 15.5 mi

Top 83%
×4story building
+66ft-88ft

Overall

23569

Females

9518

F65-69

9518

25K→30K

15.5 - 18.6 mi

Top 77%
×9story building
+181ft-148ft

Overall

21883

Females

8718

F65-69

8718

30K→20M

18.6 - 20.0 mi

Top 81%
×5story building
+64ft-50ft

Overall

22947

Females

9395

F65-69

9395

20M→21M

20.0 - 21.0 mi

Top 76%
×8story building
+106ft-24ft

Overall

21557

Females

8747

F65-69

8747

21M→35K

21.0 - 21.8 mi

Top 85%
×7story building
+17ft-86ft

Overall

24089

Females

10111

F65-69

10111

35K→23M

21.8 - 23.0 mi

Top 79%
×5story building
+23ft-63ft

Overall

22485

Females

9334

F65-69

9334

23M→24M

23.0 - 24.0 mi

Top 81%
×6story building
+12ft-82ft

Overall

23128

Females

9698

F65-69

9698

24M→40K

24.0 - 24.9 mi

Top 81%
×1story
+6ft-20ft

Overall

23058

Females

9738

F65-69

9738

40K→25.2M

24.9 - 25.2 mi

Top 86%
×1story
+13ft-16ft

Overall

24517

Females

10425

F65-69

10425

25.2M→Finish

25.2 - 26.2 mi

Top 76%
×2story building
+22ft-21ft

Overall

21458

Females

8896

F65-69

8896

Passing Analysis

Category:
Athletes Passed
2076
Passed By
480
Net Change
+1596
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25472
5K → 10K254128+126#25472#25346
10K → 15K153131+22#25346#25324
15K → 20K23432+202#25324#25122
20K → Half477+40#25122#25082
Half → 25K2758+267#25082#24815
25K → 30K4642+462#24815#24353
30K → 20M11517+98#24353#24255
20M → 21M16712+155#24255#24100
21M → 35K2928+1#24100#24099
35K → 23M12521+104#24099#23995
23M → 24M6522+43#23995#23952
24M → 40K5027+23#23952#23929
40K → 25.2M1332-19#23929#23948
25.2M → Finish8513+72#23948#23876
TOTALS2076480+1596
📊

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