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BOSTON MARATHON 2025

Rebecca Spens

Bib: 12914•F

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 35%
Gender (Female)
#0 / 12228
Top 18%
Division (F18-39)
#0 / 5469
Top 31%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:17
Rank: #9254
Start → 5K
22:17 | 7:10/mi
10K· 6.21 mi
44:16
Rank: #8834 (+420)
5K → 10K
21:59 | 7:05/mi
15K· 9.32 mi
1:06:42
Rank: #8967 (-133)
10K → 15K
22:26 | 7:13/mi
20K· 12.43 mi
1:30:07
Rank: #9431 (-464)
15K → 20K
23:25 | 7:32/mi
Half· 13.11 mi
1:35:11
Rank: #9513 (-82)
20K → Half
5:04 | 7:26/mi
25K· 15.53 mi
1:53:53
Rank: #9842 (-329)
Half → 25K
18:42 | 7:43/mi
30K· 18.64 mi
2:18:27
Rank: #9932 (-90)
25K → 30K
24:34 | 7:54/mi
20M
2:29:23
Rank: #9953 (-21)
30K → 20M
10:56 | 8:03/mi
21M
2:37:55
Rank: #9996 (-43)
20M → 21M
8:32 | 8:32/mi
35K· 21.75 mi
2:43:32
Rank: #9912 (+84)
21M → 35K
5:37 | 7:30/mi
23M
2:53:42
Rank: #9953 (-41)
35K → 23M
10:10 | 8:07/mi
24M
3:01:32
Rank: #9917 (+36)
23M → 24M
7:50 | 7:50/mi
40K· 24.85 mi
3:08:19
Rank: #9880 (+37)
24M → 40K
6:47 | 7:56/mi
25.2M
3:11:17
Rank: #9861 (+19)
40K → 25.2M
2:58 | 8:36/mi
Finish· 26.22 mi
3:19:10
Rank: #9881 (-20)
25.2M → Finish
7:53 | 7:44/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:35:11
Pace7:16 /mi
2nd Half
Distance13.11 mi
Time1:43:59
Pace7:56 /mi
📊Positive Split: 9.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:4022:177:1022:17
7:10
-
10K
6.21 mi11:13:3944:167:0721:59
7:05
-0:05
15K
9.32 mi11:36:051:06:427:0922:26
7:13
+0:08
20K
12.43 mi11:59:301:30:077:1523:25
7:32
+0:19
Half
13.11 mi12:04:341:35:117:165:04
7:26
-0:06
25K
15.53 mi12:23:161:53:537:2018:42
7:43
+0:17
30K
18.64 mi12:47:502:18:277:2624:34
7:54
+0:11
20M
20.00 mi12:58:462:29:237:2810:56
8:03
+0:09
21M
21.00 mi13:07:182:37:557:318:32
8:32
+0:29
35K
21.75 mi13:12:552:43:327:315:37
7:30
-1:02
23M
23.00 mi13:23:052:53:427:3310:10
8:07
+0:37
24M
24.00 mi13:30:553:01:327:347:50
7:50
-0:17
40K
24.85 mi13:37:423:08:197:356:47
7:56
+0:06
25.2M
25.20 mi13:40:403:11:177:352:58
8:36
+0:40
Finish
26.22 mi13:48:333:19:107:367:53
7:44
-0:52

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

7:05 /mi

Average Pace

7:36 /mi

Slowest Pace

8:36 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:17:23

39% of race

Time at Steady Pace

1:29:11

45% of race

Time at Slower Pace

32:36

16% of race

Average Pace: 7:36 /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 mi10:51:4022:177:1022:17
7:10
#9254
10K
6.21 mi11:13:3944:167:0721:59
7:05
#8834
15K
9.32 mi11:36:051:06:427:0922:26
7:13
#8967
20K
12.43 mi11:59:301:30:077:1523:25
7:32
#9431
Half
13.11 mi12:04:341:35:117:165:04
7:26
#9513
25K
15.53 mi12:23:161:53:537:2018:42
7:43
#9842
30K
18.64 mi12:47:502:18:277:2624:34
7:54
#9932
20M
20.00 mi12:58:462:29:237:2810:56
8:03
#9953
21M
21.00 mi13:07:182:37:557:318:32
8:32
#9996
35K
21.75 mi13:12:552:43:327:315:37
7:30
#9912
23M
23.00 mi13:23:052:53:427:3310:10
8:07
#9953
24M
24.00 mi13:30:553:01:327:347:50
7:50
#9917
40K
24.85 mi13:37:423:08:197:356:47
7:56
#9880
25.2M
25.20 mi13:40:403:11:177:352:58
8:36
#9861
Finish
26.22 mi13:48:333:19:107:367:53
7:44
#9881
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi9254148714879313(Top 33%)1572(Top 13%)1572(Top 29%)
10K6.21 mi3.10 mi8834+4201317+1701317+1708487(Top 30%)1180(Top 10%)1180(Top 22%)
15K9.32 mi3.11 mi8967-1331380-631380-639313(Top 33%)1572(Top 13%)1572(Top 29%)
20K12.43 mi3.11 mi9431-4641610-2301610-23011082(Top 39%)2513(Top 21%)2513(Top 46%)
Half13.11 mi0.68 mi9513-821654-441654-4411144(Top 39%)2485(Top 20%)2485(Top 45%)
25K15.53 mi2.42 mi9842-3291831-1771831-17711650(Top 41%)2927(Top 24%)2927(Top 54%)
30K18.64 mi3.11 mi9932-901925-941925-9410698(Top 38%)2640(Top 22%)2640(Top 48%)
20M20.00 mi1.36 mi9953-211966-411966-4110755(Top 38%)2802(Top 23%)2802(Top 51%)
21M21.00 mi1.00 mi9996-432028-622028-6210704(Top 38%)2952(Top 24%)2952(Top 54%)
35K21.75 mi0.75 mi9912+842018+102018+108723(Top 31%)2002(Top 16%)2002(Top 37%)
23M23.00 mi1.25 mi9953-412089-712089-7110873(Top 38%)3160(Top 26%)3160(Top 58%)
24M24.00 mi1.00 mi9917+362100-112100-1110072(Top 35%)2836(Top 23%)2836(Top 52%)
40K24.85 mi0.85 mi9880+372125-252125-259718(Top 34%)2777(Top 23%)2777(Top 51%)
25.2M25.20 mi0.35 mi9861+192132-72132-79472(Top 33%)2749(Top 22%)2749(Top 50%)
Finish26.22 mi1.02 mi9881-202161-292161-2910970(Top 39%)3438(Top 28%)3438(Top 63%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 33%
×21stories
+97ft-345ft

Overall

9313

Females

1572

F18-39

1572

5K→10K

3.1 - 6.2 mi

Top 30%
×5stories
+79ft-138ft

Overall

8487

Females

1180

F18-39

1180

10K→15K

6.2 - 9.3 mi

Top 33%
×3stories
+67ft-78ft

Overall

9313

Females

1572

F18-39

1572

15K→20K

9.3 - 12.4 mi

Top 39%
×5stories
+106ft-86ft

Overall

11082

Females

2513

F18-39

2513

20K→Half

12.4 - 13.1 mi

Top 39%
×2stories
+19ft-37ft

Overall

11144

Females

2485

F18-39

2485

Half→25K

13.1 - 15.5 mi

Top 41%
×4stories
+66ft-88ft

Overall

11650

Females

2927

F18-39

2927

25K→30K

15.5 - 18.6 mi

Top 38%
×9stories
+181ft-148ft

Overall

10698

Females

2640

F18-39

2640

30K→20M

18.6 - 20.0 mi

Top 38%
×5stories
+64ft-50ft

Overall

10755

Females

2802

F18-39

2802

20M→21M

20.0 - 21.0 mi

Top 38%
×8stories
+106ft-24ft

Overall

10704

Females

2952

F18-39

2952

21M→35K

21.0 - 21.8 mi

Top 31%
×7stories
+17ft-86ft

Overall

8723

Females

2002

F18-39

2002

35K→23M

21.8 - 23.0 mi

Top 38%
×5stories
+23ft-63ft

Overall

10873

Females

3160

F18-39

3160

23M→24M

23.0 - 24.0 mi

Top 35%
×6stories
+12ft-82ft

Overall

10072

Females

2836

F18-39

2836

24M→40K

24.0 - 24.9 mi

Top 34%
×1story
+6ft-20ft

Overall

9718

Females

2777

F18-39

2777

40K→25.2M

24.9 - 25.2 mi

Top 33%
×1story
+13ft-16ft

Overall

9472

Females

2749

F18-39

2749

25.2M→Finish

25.2 - 26.2 mi

Top 39%
×2stories
+22ft-21ft

Overall

10970

Females

3438

F18-39

3438

Passing Analysis

Category:
Athletes Passed
1656
Passed By
2278
Net Change
-627
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9254
5K → 10K48767+420#9254#8834
10K → 15K118251-133#8834#8967
15K → 20K68532-464#8967#9431
20K → Half1294-82#9431#9513
Half → 25K79408-329#9513#9842
25K → 30K196286-90#9842#9932
30K → 20M109129-21#9932#9953
20M → 21M97139-43#9953#9996
21M → 35K10621+84#9996#9912
35K → 23M91131-41#9912#9953
23M → 24M9357+36#9953#9917
24M → 40K9456+37#9917#9880
40K → 25.2M3920+19#9880#9861
25.2M → Finish6787-20#9861#9881
TOTALS16562278-627
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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