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BOSTON MARATHON 2025

Els De Busser

Bib: 21660•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Top 41%
Division (F45-49)
#0 / 1813
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:43
Rank: #18580
Start → 5K
25:43 | 8:17/mi
10K· 6.21 mi
51:31
Rank: #18554 (+26)
5K → 10K
25:48 | 8:18/mi
15K· 9.32 mi
1:17:35
Rank: #18553 (+1)
10K → 15K
26:04 | 8:23/mi
20K· 12.43 mi
1:44:05
Rank: #18484 (+69)
15K → 20K
26:30 | 8:32/mi
Half· 13.11 mi
1:49:46
Rank: #18470 (+14)
20K → Half
5:41 | 8:20/mi
25K· 15.53 mi
2:11:00
Rank: #18493 (-23)
Half → 25K
21:14 | 8:45/mi
30K· 18.64 mi
2:39:02
Rank: #18333 (+160)
25K → 30K
28:02 | 9:01/mi
20M
2:51:41
Rank: #18330 (+3)
30K → 20M
12:39 | 9:19/mi
21M
3:01:25
Rank: #18243 (+87)
20M → 21M
9:44 | 9:44/mi
35K· 21.75 mi
3:07:58
Rank: #18190 (+53)
21M → 35K
6:33 | 8:45/mi
23M
3:19:10
Rank: #18034 (+156)
35K → 23M
11:12 | 8:57/mi
24M
3:27:34
Rank: #17830 (+204)
23M → 24M
8:24 | 8:24/mi
40K· 24.85 mi
3:34:51
Rank: #17667 (+163)
24M → 40K
7:17 | 8:31/mi
25.2M
3:38:04
Rank: #17590 (+77)
40K → 25.2M
3:13 | 9:20/mi
Finish· 26.22 mi
3:46:28
Rank: #17482 (+108)
25.2M → Finish
8:24 | 8:15/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:49:46
Pace8:22 /mi
2nd Half
Distance13.11 mi
Time1:56:42
Pace8:54 /mi
📊Positive Split: 6.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:0025:438:1725:43
8:17
-
10K
6.21 mi11:46:4851:318:1725:48
8:18
+0:01
15K
9.32 mi12:12:521:17:358:1926:04
8:23
+0:05
20K
12.43 mi12:39:221:44:058:2326:30
8:32
+0:09
Half
13.11 mi12:45:031:49:468:225:41
8:20
-0:12
25K
15.53 mi13:06:172:11:008:2621:14
8:45
+0:25
30K
18.64 mi13:34:192:39:028:3228:02
9:01
+0:16
20M
20.00 mi13:46:582:51:418:3512:39
9:19
+0:18
21M
21.00 mi13:56:423:01:258:389:44
9:44
+0:25
35K
21.75 mi14:03:153:07:588:396:33
8:45
-0:59
23M
23.00 mi14:14:273:19:108:4011:12
8:57
+0:12
24M
24.00 mi14:22:513:27:348:398:24
8:24
-0:33
40K
24.85 mi14:30:083:34:518:397:17
8:31
+0:07
25.2M
25.20 mi14:33:213:38:048:393:13
9:20
+0:49
Finish
26.22 mi14:41:453:46:288:398:24
8:15
-1:05

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

8:15 /mi

Average Pace

8:39 /mi

Slowest Pace

9:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:20:52

89% of race

Time at Steady Pace

25:36

11% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:38 /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 mi11:21:0025:438:1725:43
8:17
#18580
10K
6.21 mi11:46:4851:318:1725:48
8:18
#18554
15K
9.32 mi12:12:521:17:358:1926:04
8:23
#18553
20K
12.43 mi12:39:221:44:058:2326:30
8:32
#18484
Half
13.11 mi12:45:031:49:468:225:41
8:20
#18470
25K
15.53 mi13:06:172:11:008:2621:14
8:45
#18493
30K
18.64 mi13:34:192:39:028:3228:02
9:01
#18333
20M
20.00 mi13:46:582:51:418:3512:39
9:19
#18330
21M
21.00 mi13:56:423:01:258:389:44
9:44
#18243
35K
21.75 mi14:03:153:07:588:396:33
8:45
#18190
23M
23.00 mi14:14:273:19:108:4011:12
8:57
#18034
24M
24.00 mi14:22:513:27:348:398:24
8:24
#17830
40K
24.85 mi14:30:083:34:518:397:17
8:31
#17667
25.2M
25.20 mi14:33:213:38:048:393:13
9:20
#17590
Finish
26.22 mi14:41:453:46:288:398:24
8:15
#17482
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi185806672667218643(Top 66%)6689(Top 55%)6689(Top 369%)
10K6.21 mi3.10 mi18554+266647+256647+2518592(Top 65%)6649(Top 54%)6649(Top 367%)
15K9.32 mi3.11 mi18553+16656-96656-918643(Top 66%)6689(Top 55%)6689(Top 369%)
20K12.43 mi3.11 mi18484+696611+456611+4518443(Top 65%)6593(Top 54%)6593(Top 364%)
Half13.11 mi0.68 mi18470+146594+176594+1718167(Top 64%)6417(Top 52%)6417(Top 354%)
25K15.53 mi2.42 mi18493-236636-426636-4218716(Top 66%)6820(Top 56%)6820(Top 376%)
30K18.64 mi3.11 mi18333+1606573+636573+6317810(Top 63%)6477(Top 53%)6477(Top 357%)
20M20.00 mi1.36 mi18330+36602-296602-2918338(Top 65%)6911(Top 57%)6911(Top 381%)
21M21.00 mi1.00 mi18243+876576+266576+2617200(Top 61%)6372(Top 52%)6372(Top 351%)
35K21.75 mi0.75 mi18190+536566+106566+1017055(Top 60%)6376(Top 52%)6376(Top 352%)
23M23.00 mi1.25 mi18034+1566510+566510+5615973(Top 56%)5873(Top 48%)5873(Top 324%)
24M24.00 mi1.00 mi17830+2046440+706440+7013941(Top 49%)4808(Top 39%)4808(Top 265%)
40K24.85 mi0.85 mi17667+1636371+696371+6913609(Top 48%)4775(Top 39%)4775(Top 263%)
25.2M25.20 mi0.35 mi17590+776341+306341+3013717(Top 48%)4897(Top 40%)4897(Top 270%)
Finish26.22 mi1.02 mi17482+1086304+376304+3714605(Top 51%)5273(Top 43%)5273(Top 291%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 66%
×21stories
+97ft-345ft

Overall

18643

Females

6689

F45-49

6689

5K→10K

3.1 - 6.2 mi

Top 65%
×5stories
+79ft-138ft

Overall

18592

Females

6649

F45-49

6649

10K→15K

6.2 - 9.3 mi

Top 66%
×3stories
+67ft-78ft

Overall

18643

Females

6689

F45-49

6689

15K→20K

9.3 - 12.4 mi

Top 65%
×5stories
+106ft-86ft

Overall

18443

Females

6593

F45-49

6593

20K→Half

12.4 - 13.1 mi

Top 64%
×2stories
+19ft-37ft

Overall

18167

Females

6417

F45-49

6417

Half→25K

13.1 - 15.5 mi

Top 66%
×4stories
+66ft-88ft

Overall

18716

Females

6820

F45-49

6820

25K→30K

15.5 - 18.6 mi

Top 63%
×9stories
+181ft-148ft

Overall

17810

Females

6477

F45-49

6477

30K→20M

18.6 - 20.0 mi

Top 65%
×5stories
+64ft-50ft

Overall

18338

Females

6911

F45-49

6911

20M→21M

20.0 - 21.0 mi

Top 61%
×8stories
+106ft-24ft

Overall

17200

Females

6372

F45-49

6372

21M→35K

21.0 - 21.8 mi

Top 60%
×7stories
+17ft-86ft

Overall

17055

Females

6376

F45-49

6376

35K→23M

21.8 - 23.0 mi

Top 56%
×5stories
+23ft-63ft

Overall

15973

Females

5873

F45-49

5873

23M→24M

23.0 - 24.0 mi

Top 49%
×6stories
+12ft-82ft

Overall

13941

Females

4808

F45-49

4808

24M→40K

24.0 - 24.9 mi

Top 48%
×1story
+6ft-20ft

Overall

13609

Females

4775

F45-49

4775

40K→25.2M

24.9 - 25.2 mi

Top 48%
×1story
+13ft-16ft

Overall

13717

Females

4897

F45-49

4897

25.2M→Finish

25.2 - 26.2 mi

Top 51%
×2stories
+22ft-21ft

Overall

14605

Females

5273

F45-49

5273

Passing Analysis

Category:
Athletes Passed
2321
Passed By
1223
Net Change
+1098
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18580
5K → 10K282256+26#18580#18554
10K → 15K191190+1#18554#18553
15K → 20K225156+69#18553#18484
20K → Half4329+14#18484#18470
Half → 25K167190-23#18470#18493
25K → 30K309149+160#18493#18333
30K → 20M120117+3#18333#18330
20M → 21M14154+87#18330#18243
21M → 35K8027+53#18243#18190
35K → 23M18428+156#18190#18034
23M → 24M2106+204#18034#17830
24M → 40K1663+163#17830#17667
40K → 25.2M781+77#17667#17590
25.2M → Finish12517+108#17590#17482
TOTALS23211223+1098
📊

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