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BOSTON MARATHON 2025

Rena Elmer

Bib: 150•F

TX

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 2%
Gender (Female)
#0 / 12228
Top 0.4%
Masters (Masters Women)
#0 / 6759
Top 0.1%
Division (F40-44)
#0 / 1718
Top 0.3%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
18:25
Rank: #877
Start → 5K
18:25 | 5:56/mi
10K· 6.21 mi
36:57
Rank: #935 (-58)
5K → 10K
18:32 | 5:58/mi
15K· 9.32 mi
55:27
Rank: #925 (+10)
10K → 15K
18:30 | 5:57/mi
20K· 12.43 mi
1:13:55
Rank: #856 (+69)
15K → 20K
18:28 | 5:57/mi
Half· 13.11 mi
1:18:00
Rank: #869 (-13)
20K → Half
4:05 | 5:59/mi
25K· 15.53 mi
1:32:21
Rank: #811 (+58)
Half → 25K
14:21 | 5:55/mi
30K· 18.64 mi
1:51:20
Rank: #769 (+42)
25K → 30K
18:59 | 6:07/mi
20M
1:59:52
Rank: #760 (+9)
30K → 20M
8:32 | 6:17/mi
21M
2:06:29
Rank: #752 (+8)
20M → 21M
6:37 | 6:37/mi
35K· 21.75 mi
2:10:57
Rank: #736 (+16)
21M → 35K
4:28 | 5:58/mi
23M
2:18:40
Rank: #706 (+30)
35K → 23M
7:43 | 6:10/mi
24M
2:24:32
Rank: #681 (+25)
23M → 24M
5:52 | 5:52/mi
40K· 24.85 mi
2:29:44
Rank: #657 (+24)
24M → 40K
5:12 | 6:05/mi
25.2M
2:31:59
Rank: #653 (+4)
40K → 25.2M
2:15 | 6:31/mi
Finish· 26.22 mi
2:37:48
Rank: #634 (+19)
25.2M → Finish
5:49 | 5:42/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:18:00
Pace5:57 /mi
2nd Half
Distance13.11 mi
Time1:19:48
Pace6:05 /mi
📊Positive Split: 2.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:05:2718:255:5618:25
5:56
-
10K
6.21 mi10:23:5936:575:5718:32
5:58
+0:02
15K
9.32 mi10:42:2955:275:5718:30
5:57
-0:01
20K
12.43 mi11:00:571:13:555:5718:28
5:57
0:00
Half
13.11 mi11:05:021:18:005:574:05
5:59
+0:02
25K
15.53 mi11:19:231:32:215:5714:21
5:55
-0:04
30K
18.64 mi11:38:221:51:205:5818:59
6:07
+0:12
20M
20.00 mi11:46:541:59:526:008:32
6:17
+0:10
21M
21.00 mi11:53:312:06:296:016:37
6:37
+0:20
35K
21.75 mi11:57:592:10:576:014:28
5:58
-0:39
23M
23.00 mi12:05:422:18:406:027:43
6:10
+0:12
24M
24.00 mi12:11:342:24:326:015:52
5:52
-0:18
40K
24.85 mi12:16:462:29:446:015:12
6:05
+0:13
25.2M
25.20 mi12:19:012:31:596:022:15
6:31
+0:26
Finish
26.22 mi12:24:502:37:486:015:49
5:42
-0:49

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

5:42 /mi

Average Pace

6:01 /mi

Slowest Pace

6:37 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:20:24

89% of race

Time at Steady Pace

17:24

11% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:01 /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 mi10:05:2718:255:5618:25
5:56
#877
10K
6.21 mi10:23:5936:575:5718:32
5:58
#935
15K
9.32 mi10:42:2955:275:5718:30
5:57
#925
20K
12.43 mi11:00:571:13:555:5718:28
5:57
#856
Half
13.11 mi11:05:021:18:005:574:05
5:59
#869
25K
15.53 mi11:19:231:32:215:5714:21
5:55
#811
30K
18.64 mi11:38:221:51:205:5818:59
6:07
#769
20M
20.00 mi11:46:541:59:526:008:32
6:17
#760
21M
21.00 mi11:53:312:06:296:016:37
6:37
#752
35K
21.75 mi11:57:592:10:576:014:28
5:58
#736
23M
23.00 mi12:05:422:18:406:027:43
6:10
#706
24M
24.00 mi12:11:342:24:326:015:52
5:52
#681
40K
24.85 mi12:16:462:29:446:015:12
6:05
#657
25.2M
25.20 mi12:19:012:31:596:022:15
6:31
#653
Finish
26.22 mi12:24:502:37:486:015:49
5:42
#634
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi8775252909(Top 3%)49(Top 0.4%)49(Top 3%)
10K6.21 mi3.10 mi935-5852521022(Top 4%)54(Top 0.4%)54(Top 3%)
15K9.32 mi3.11 mi925+105252909(Top 3%)49(Top 0.4%)49(Top 3%)
20K12.43 mi3.11 mi856+6948+448+4733(Top 3%)44(Top 0.4%)44(Top 3%)
Half13.11 mi0.68 mi869-1348481134(Top 4%)54(Top 0.4%)54(Top 3%)
25K15.53 mi2.42 mi811+584848617(Top 2%)43(Top 0.4%)43(Top 3%)
30K18.64 mi3.11 mi769+4245+345+3711(Top 3%)41(Top 0.3%)41(Top 2%)
20M20.00 mi1.36 mi760+94545924(Top 3%)47(Top 0.4%)47(Top 3%)
21M21.00 mi1.00 mi752+84545986(Top 3%)45(Top 0.4%)45(Top 3%)
35K21.75 mi0.75 mi736+164545692(Top 2%)42(Top 0.3%)42(Top 2%)
23M23.00 mi1.25 mi706+304545612(Top 2%)31(Top 0.3%)31(Top 2%)
24M24.00 mi1.00 mi681+254545356(Top 1%)24(Top 0.2%)24(Top 1%)
40K24.85 mi0.85 mi657+244545532(Top 2%)32(Top 0.3%)32(Top 2%)
25.2M25.20 mi0.35 mi653+44545524(Top 2%)34(Top 0.3%)34(Top 2%)
Finish26.22 mi1.02 mi634+194545382(Top 1%)20(Top 0.2%)20(Top 1%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 3%
×21stories
+97ft-345ft

Overall

909

Females

49

F40-44

49

5K→10K

3.1 - 6.2 mi

Top 4%
×5stories
+79ft-138ft

Overall

1022

Females

54

F40-44

54

10K→15K

6.2 - 9.3 mi

Top 3%
×3stories
+67ft-78ft

Overall

909

Females

49

F40-44

49

15K→20K

9.3 - 12.4 mi

Top 3%
×5stories
+106ft-86ft

Overall

733

Females

44

F40-44

44

20K→Half

12.4 - 13.1 mi

Top 4%
×2stories
+19ft-37ft

Overall

1134

Females

54

F40-44

54

Half→25K

13.1 - 15.5 mi

Top 2%
×4stories
+66ft-88ft

Overall

617

Females

43

F40-44

43

25K→30K

15.5 - 18.6 mi

Top 3%
×9stories
+181ft-148ft

Overall

711

Females

41

F40-44

41

30K→20M

18.6 - 20.0 mi

Top 3%
×5stories
+64ft-50ft

Overall

924

Females

47

F40-44

47

20M→21M

20.0 - 21.0 mi

Top 3%
×8stories
+106ft-24ft

Overall

986

Females

45

F40-44

45

21M→35K

21.0 - 21.8 mi

Top 2%
×7stories
+17ft-86ft

Overall

692

Females

42

F40-44

42

35K→23M

21.8 - 23.0 mi

Top 2%
×5stories
+23ft-63ft

Overall

612

Females

31

F40-44

31

23M→24M

23.0 - 24.0 mi

Top 1%
×6stories
+12ft-82ft

Overall

356

Females

24

F40-44

24

24M→40K

24.0 - 24.9 mi

Top 2%
×1story
+6ft-20ft

Overall

532

Females

32

F40-44

32

40K→25.2M

24.9 - 25.2 mi

Top 2%
×1story
+13ft-16ft

Overall

524

Females

34

F40-44

34

25.2M→Finish

25.2 - 26.2 mi

Top 1%
×2stories
+22ft-21ft

Overall

382

Females

20

F40-44

20

Passing Analysis

Category:
Athletes Passed
427
Passed By
184
Net Change
+243
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#877
5K → 10K2886-58#877#935
10K → 15K2717+10#935#925
15K → 20K7910+69#925#856
20K → Half114-13#856#869
Half → 25K624+58#869#811
25K → 30K5513+42#811#769
30K → 20M2314+9#769#760
20M → 21M2214+8#760#752
21M → 35K171+16#752#736
35K → 23M333+30#736#706
23M → 24M272+25#706#681
24M → 40K273+24#681#657
40K → 25.2M51+4#657#653
25.2M → Finish212+19#653#634
TOTALS427184+243
📊

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