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BOSTON MARATHON 2025

Rebecca Janfaza

Bib: 26772•F

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Division (F18-39)
#0 / 5469
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
10:48/mi
33:32
↑ 97↓ 3451.5%
10K· 6.21 mi
10:53/mi
1:07:21
↑ 79↓ 1380.4%
15K· 9.32 mi
11:41/mi
1:43:40
↑ 67↓ 78
20K· 12.43 mi
11:36/mi
2:19:43
↑ 106↓ 860.1%
Half· 13.11 mi
11:22/mi
2:27:28
↑ 19↓ 370.5%
25K· 15.53 mi
12:31/mi
2:57:50
↑ 66↓ 880.2%
30K· 18.64 mi
12:00/mi
3:35:06
↑ 181↓ 1480.2%
20M
12:27/mi
3:52:01
↑ 64↓ 500.2%
21M
13:01/mi
4:05:02
↑ 106↓ 241.6%
35K· 21.75 mi
12:15/mi
4:14:12
↑ 17↓ 861.7%
23M
12:09/mi
4:29:25
↑ 23↓ 630.6%
24M
12:20/mi
4:41:45
↓ 821.3%
40K· 24.85 mi
12:53/mi
4:52:46
↓ 200.3%
25.2M
13:32/mi
4:57:26
↑ 13↓ 160.2%
Finish· 26.22 mi
11:32/mi
5:09:11
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:27:28
Pace11:15 /mi
2nd Half
Distance13.11 mi
Time2:41:43
Pace12:20 /mi
📊Positive Split: 9.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:49:3033:3210:4833:32
10:48
-
10K
6.21 mi12:23:191:07:2110:5033:49
10:53
+0:05
15K
9.32 mi12:59:381:43:4011:0736:19
11:41
+0:48
20K
12.43 mi13:35:412:19:4311:1536:03
11:36
-0:05
Half
13.11 mi13:43:262:27:2811:157:45
11:22
-0:14
25K
15.53 mi14:13:482:57:5011:2730:22
12:31
+1:09
30K
18.64 mi14:51:043:35:0611:3237:16
12:00
-0:31
20M
20.00 mi15:07:593:52:0111:3616:55
12:27
+0:27
21M
21.00 mi15:21:004:05:0211:4013:01
13:01
+0:34
35K
21.75 mi15:30:104:14:1211:419:10
12:15
-0:46
23M
23.00 mi15:45:234:29:2511:4315:13
12:09
-0:06
24M
24.00 mi15:57:434:41:4511:4412:20
12:20
+0:11
40K
24.85 mi16:08:444:52:4611:4711:01
12:53
+0:33
25.2M
25.20 mi16:13:244:57:2611:484:40
13:32
+0:39
Finish
26.22 mi16:25:095:09:1111:4811:45
11:32
-2:00

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

10:48 /mi

Average Pace

11:48 /mi

Slowest Pace

13:32 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:39:13

51% of race

Time at Steady Pace

2:01:16

39% of race

Time at Slower Pace

28:42

9% of race

Average Pace: 11:48 /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 mi11:49:3033:3210:4833:32
10:48
#27268
10K
6.21 mi12:23:191:07:2110:5033:49
10:53
#27095
15K
9.32 mi12:59:381:43:4011:0736:19
11:41
#27228
20K
12.43 mi13:35:412:19:4311:1536:03
11:36
#27083
Half
13.11 mi13:43:262:27:2811:157:45
11:22
#27073
25K
15.53 mi14:13:482:57:5011:2730:22
12:31
#27066
30K
18.64 mi14:51:043:35:0611:3237:16
12:00
#26836
20M
20.00 mi15:07:593:52:0111:3616:55
12:27
#26773
21M
21.00 mi15:21:004:05:0211:4013:01
13:01
#26700
35K
21.75 mi15:30:104:14:1211:419:10
12:15
#26687
23M
23.00 mi15:45:234:29:2511:4315:13
12:09
#26621
24M
24.00 mi15:57:434:41:4511:4412:20
12:20
#26616
40K
24.85 mi16:08:444:52:4611:4711:01
12:53
#26613
25.2M
25.20 mi16:13:244:57:2611:484:40
13:32
#26604
Finish
26.22 mi16:25:095:09:1111:4811:45
11:32
#26606
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi27268114881148827406(Top 96%)11625(Top 95%)11625(Top 213%)
10K6.21 mi3.10 mi27095+17311411+7711411+7726893(Top 95%)11304(Top 92%)11304(Top 207%)
15K9.32 mi3.11 mi27228-13311486-7511486-7527406(Top 96%)11625(Top 95%)11625(Top 213%)
20K12.43 mi3.11 mi27083+14511422+6411422+6426738(Top 94%)11238(Top 92%)11238(Top 205%)
Half13.11 mi0.68 mi27073+1011417+511417+526924(Top 95%)11369(Top 93%)11369(Top 208%)
25K15.53 mi2.42 mi27066+711419-211419-226947(Top 95%)11394(Top 93%)11394(Top 208%)
30K18.64 mi3.11 mi26836+23011303+11611303+11625590(Top 90%)10723(Top 88%)10723(Top 196%)
20M20.00 mi1.36 mi26773+6311276+2711276+2725843(Top 91%)10927(Top 89%)10927(Top 200%)
21M21.00 mi1.00 mi26700+7311237+3911237+3925054(Top 88%)10598(Top 87%)10598(Top 194%)
35K21.75 mi0.75 mi26687+1311246-911246-926179(Top 92%)11182(Top 91%)11182(Top 204%)
23M23.00 mi1.25 mi26621+6611220+2611220+2625323(Top 89%)10764(Top 88%)10764(Top 197%)
24M24.00 mi1.00 mi26616+511224-411224-426090(Top 92%)11169(Top 91%)11169(Top 204%)
40K24.85 mi0.85 mi26613+311227-311227-326171(Top 92%)11230(Top 92%)11230(Top 205%)
25.2M25.20 mi0.35 mi26604+911223+411223+425683(Top 90%)11036(Top 90%)11036(Top 202%)
Finish26.22 mi1.02 mi26606-211234-1111234-1126167(Top 92%)11230(Top 92%)11230(Top 205%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 96%
×21story building
+97ft-345ft

Overall

27406

Females

11625

F18-39

11625

5K→10K

3.1 - 6.2 mi

Top 95%
×5story building
+79ft-138ft

Overall

26893

Females

11304

F18-39

11304

10K→15K

6.2 - 9.3 mi

Top 96%
×3story building
+67ft-78ft

Overall

27406

Females

11625

F18-39

11625

15K→20K

9.3 - 12.4 mi

Top 94%
×5story building
+106ft-86ft

Overall

26738

Females

11238

F18-39

11238

20K→Half

12.4 - 13.1 mi

Top 95%
×2story building
+19ft-37ft

Overall

26924

Females

11369

F18-39

11369

Half→25K

13.1 - 15.5 mi

Top 95%
×4story building
+66ft-88ft

Overall

26947

Females

11394

F18-39

11394

25K→30K

15.5 - 18.6 mi

Top 90%
×9story building
+181ft-148ft

Overall

25590

Females

10723

F18-39

10723

30K→20M

18.6 - 20.0 mi

Top 91%
×5story building
+64ft-50ft

Overall

25843

Females

10927

F18-39

10927

20M→21M

20.0 - 21.0 mi

Top 88%
×8story building
+106ft-24ft

Overall

25054

Females

10598

F18-39

10598

21M→35K

21.0 - 21.8 mi

Top 92%
×7story building
+17ft-86ft

Overall

26179

Females

11182

F18-39

11182

35K→23M

21.8 - 23.0 mi

Top 89%
×5story building
+23ft-63ft

Overall

25323

Females

10764

F18-39

10764

23M→24M

23.0 - 24.0 mi

Top 92%
×6story building
+12ft-82ft

Overall

26090

Females

11169

F18-39

11169

24M→40K

24.0 - 24.9 mi

Top 92%
×1story
+6ft-20ft

Overall

26171

Females

11230

F18-39

11230

40K→25.2M

24.9 - 25.2 mi

Top 90%
×1story
+13ft-16ft

Overall

25683

Females

11036

F18-39

11036

25.2M→Finish

25.2 - 26.2 mi

Top 92%
×2story building
+22ft-21ft

Overall

26167

Females

11230

F18-39

11230

Passing Analysis

Category:
Athletes Passed
1170
Passed By
508
Net Change
+662
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#27268
5K → 10K24673+173#27268#27095
10K → 15K65198-133#27095#27228
15K → 20K17732+145#27228#27083
20K → Half2010+10#27083#27073
Half → 25K7467+7#27073#27066
25K → 30K24616+230#27066#26836
30K → 20M718+63#26836#26773
20M → 21M8310+73#26773#26700
21M → 35K3219+13#26700#26687
35K → 23M7711+66#26687#26621
23M → 24M2520+5#26621#26616
24M → 40K2219+3#26616#26613
40K → 25.2M123+9#26613#26604
25.2M → Finish2022-2#26604#26606
TOTALS1170508+662
📊

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