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BOSTON MARATHON 2025

Erin Klorer

Bib: 20980•F

OH

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 40%
Masters (Masters Women)
#0 / 6759
Top 26%
Division (F40-44)
#0 / 1718
Top 50%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:22
Rank: #17859
Start → 5K
25:22 | 8:10/mi
10K· 6.21 mi
51:07
Rank: #18147 (-288)
5K → 10K
25:45 | 8:17/mi
15K· 9.32 mi
1:16:26
Rank: #17758 (+389)
10K → 15K
25:19 | 8:09/mi
20K· 12.43 mi
1:42:06
Rank: #17442 (+316)
15K → 20K
25:40 | 8:16/mi
Half· 13.11 mi
1:47:45
Rank: #17461 (-19)
20K → Half
5:39 | 8:17/mi
25K· 15.53 mi
2:07:53
Rank: #17158 (+303)
Half → 25K
20:08 | 8:18/mi
30K· 18.64 mi
2:34:18
Rank: #16705 (+453)
25K → 30K
26:25 | 8:30/mi
20M
2:45:55
Rank: #16484 (+221)
30K → 20M
11:37 | 8:33/mi
21M
2:54:37
Rank: #16179 (+305)
20M → 21M
8:42 | 8:42/mi
35K· 21.75 mi
3:00:47
Rank: #16066 (+113)
21M → 35K
6:10 | 8:15/mi
23M
3:11:15
Rank: #15777 (+289)
35K → 23M
10:28 | 8:22/mi
24M
3:19:20
Rank: #15610 (+167)
23M → 24M
8:05 | 8:05/mi
40K· 24.85 mi
3:26:16
Rank: #15438 (+172)
24M → 40K
6:56 | 8:07/mi
25.2M
3:29:15
Rank: #15338 (+100)
40K → 25.2M
2:59 | 8:39/mi
Finish· 26.22 mi
3:36:55
Rank: #15081 (+257)
25.2M → Finish
7:40 | 7:31/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:47:45
Pace8:13 /mi
2nd Half
Distance13.11 mi
Time1:49:10
Pace8:20 /mi
📊Positive Split: 1.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:4125:228:1025:22
8:10
-
10K
6.21 mi11:44:2651:078:1425:45
8:17
+0:07
15K
9.32 mi12:09:451:16:268:1225:19
8:09
-0:08
20K
12.43 mi12:35:251:42:068:1325:40
8:16
+0:07
Half
13.11 mi12:41:041:47:458:135:39
8:17
+0:01
25K
15.53 mi13:01:122:07:538:1420:08
8:18
+0:01
30K
18.64 mi13:27:372:34:188:1726:25
8:30
+0:12
20M
20.00 mi13:39:142:45:558:1811:37
8:33
+0:03
21M
21.00 mi13:47:562:54:378:198:42
8:42
+0:09
35K
21.75 mi13:54:063:00:478:196:10
8:15
-0:27
23M
23.00 mi14:04:343:11:158:1910:28
8:22
+0:07
24M
24.00 mi14:12:393:19:208:188:05
8:05
-0:17
40K
24.85 mi14:19:353:26:168:186:56
8:07
+0:02
25.2M
25.20 mi14:22:343:29:158:182:59
8:39
+0:32
Finish
26.22 mi14:30:143:36:558:177:40
7:31
-1:08

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

7:31 /mi

Average Pace

8:17 /mi

Slowest Pace

8:42 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:45:12

48% of race

Time at Steady Pace

1:51:43

52% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:16 /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 mi11:18:4125:228:1025:22
8:10
#17859
10K
6.21 mi11:44:2651:078:1425:45
8:17
#18147
15K
9.32 mi12:09:451:16:268:1225:19
8:09
#17758
20K
12.43 mi12:35:251:42:068:1325:40
8:16
#17442
Half
13.11 mi12:41:041:47:458:135:39
8:17
#17461
25K
15.53 mi13:01:122:07:538:1420:08
8:18
#17158
30K
18.64 mi13:27:372:34:188:1726:25
8:30
#16705
20M
20.00 mi13:39:142:45:558:1811:37
8:33
#16484
21M
21.00 mi13:47:562:54:378:198:42
8:42
#16179
35K
21.75 mi13:54:063:00:478:196:10
8:15
#16066
23M
23.00 mi14:04:343:11:158:1910:28
8:22
#15777
24M
24.00 mi14:12:393:19:208:188:05
8:05
#15610
40K
24.85 mi14:19:353:26:168:186:56
8:07
#15438
25.2M
25.20 mi14:22:343:29:158:182:59
8:39
#15338
Finish
26.22 mi14:30:143:36:558:177:40
7:31
#15081
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi178596253625317079(Top 60%)5775(Top 47%)5775(Top 336%)
10K6.21 mi3.10 mi18147-2886416-1636416-16318469(Top 65%)6577(Top 54%)6577(Top 383%)
15K9.32 mi3.11 mi17758+3896182+2346182+23417079(Top 60%)5775(Top 47%)5775(Top 336%)
20K12.43 mi3.11 mi17442+3165996+1865996+18616700(Top 59%)5601(Top 46%)5601(Top 326%)
Half13.11 mi0.68 mi17461-196009-136009-1317827(Top 63%)6206(Top 51%)6206(Top 361%)
25K15.53 mi2.42 mi17158+3035860+1495860+14915952(Top 56%)5284(Top 43%)5284(Top 308%)
30K18.64 mi3.11 mi16705+4535639+2215639+22114780(Top 52%)4786(Top 39%)4786(Top 279%)
20M20.00 mi1.36 mi16484+2215544+955544+9514111(Top 50%)4575(Top 37%)4575(Top 266%)
21M21.00 mi1.00 mi16179+3055398+1465398+14611722(Top 41%)3472(Top 28%)3472(Top 202%)
35K21.75 mi0.75 mi16066+1135360+385360+3813940(Top 49%)4652(Top 38%)4652(Top 271%)
23M23.00 mi1.25 mi15777+2895240+1205240+12012455(Top 44%)3985(Top 33%)3985(Top 232%)
24M24.00 mi1.00 mi15610+1675158+825158+8211839(Top 42%)3734(Top 31%)3734(Top 217%)
40K24.85 mi0.85 mi15438+1725093+655093+6511004(Top 39%)3421(Top 28%)3421(Top 199%)
25.2M25.20 mi0.35 mi15338+1005047+465047+469850(Top 35%)2976(Top 24%)2976(Top 173%)
Finish26.22 mi1.02 mi15081+2574922+1254922+1259407(Top 33%)2735(Top 22%)2735(Top 159%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 60%
×21stories
+97ft-345ft

Overall

17079

Females

5775

F40-44

5775

5K→10K

3.1 - 6.2 mi

Top 65%
×5stories
+79ft-138ft

Overall

18469

Females

6577

F40-44

6577

10K→15K

6.2 - 9.3 mi

Top 60%
×3stories
+67ft-78ft

Overall

17079

Females

5775

F40-44

5775

15K→20K

9.3 - 12.4 mi

Top 59%
×5stories
+106ft-86ft

Overall

16700

Females

5601

F40-44

5601

20K→Half

12.4 - 13.1 mi

Top 63%
×2stories
+19ft-37ft

Overall

17827

Females

6206

F40-44

6206

Half→25K

13.1 - 15.5 mi

Top 56%
×4stories
+66ft-88ft

Overall

15952

Females

5284

F40-44

5284

25K→30K

15.5 - 18.6 mi

Top 52%
×9stories
+181ft-148ft

Overall

14780

Females

4786

F40-44

4786

30K→20M

18.6 - 20.0 mi

Top 50%
×5stories
+64ft-50ft

Overall

14111

Females

4575

F40-44

4575

20M→21M

20.0 - 21.0 mi

Top 41%
×8stories
+106ft-24ft

Overall

11722

Females

3472

F40-44

3472

21M→35K

21.0 - 21.8 mi

Top 49%
×7stories
+17ft-86ft

Overall

13940

Females

4652

F40-44

4652

35K→23M

21.8 - 23.0 mi

Top 44%
×5stories
+23ft-63ft

Overall

12455

Females

3985

F40-44

3985

23M→24M

23.0 - 24.0 mi

Top 42%
×6stories
+12ft-82ft

Overall

11839

Females

3734

F40-44

3734

24M→40K

24.0 - 24.9 mi

Top 39%
×1story
+6ft-20ft

Overall

11004

Females

3421

F40-44

3421

40K→25.2M

24.9 - 25.2 mi

Top 35%
×1story
+13ft-16ft

Overall

9850

Females

2976

F40-44

2976

25.2M→Finish

25.2 - 26.2 mi

Top 33%
×2stories
+22ft-21ft

Overall

9407

Females

2735

F40-44

2735

Passing Analysis

Category:
Athletes Passed
3499
Passed By
721
Net Change
+2778
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17859
5K → 10K176464-288#17859#18147
10K → 15K43950+389#18147#17758
15K → 20K35943+316#17758#17442
20K → Half2746-19#17442#17461
Half → 25K34643+303#17461#17158
25K → 30K48229+453#17158#16705
30K → 20M23413+221#16705#16484
20M → 21M3127+305#16484#16179
21M → 35K12512+113#16179#16066
35K → 23M2923+289#16066#15777
23M → 24M1714+167#15777#15610
24M → 40K1764+172#15610#15438
40K → 25.2M1000+100#15438#15338
25.2M → Finish2603+257#15338#15081
TOTALS3499721+2778
📊

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