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BOSTON MARATHON 2025

Libby Dykes

Bib: 23567•F

UT

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F50-54)
#0 / 1303
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
28:54
Rank: #23564
Start → 5K
9:18/mi
28:54 split
10K· 6.21 mi
57:18
Rank: #23282 (+282)
5K → 10K
9:08/mi
28:24 split
15K· 9.32 mi
1:27:15
Rank: #23631 (-349)
10K → 15K
9:38/mi
29:57 split
20K· 12.43 mi
1:55:38
Rank: #23152 (+479)
15K → 20K
9:08/mi
28:23 split
Half· 13.11 mi
2:01:42
Rank: #23076 (+76)
20K → Half
8:54/mi
6:04 split
25K· 15.53 mi
2:23:45
Rank: #22629 (+447)
Half → 25K
9:06/mi
22:03 split
30K· 18.64 mi
2:53:11
Rank: #22130 (+499)
25K → 30K
9:28/mi
29:26 split
20M
3:06:04
Rank: #21888 (+242)
30K → 20M
9:29/mi
12:53 split
21M
3:15:58
Rank: #21657 (+231)
20M → 21M
9:54/mi
9:54 split
35K· 21.75 mi
3:22:48
Rank: #21568 (+89)
21M → 35K
9:08/mi
6:50 split
23M
3:34:22
Rank: #21316 (+252)
35K → 23M
9:14/mi
11:34 split
24M
3:43:30
Rank: #21176 (+140)
23M → 24M
9:08/mi
9:08 split
40K· 24.85 mi
3:51:12
Rank: #21008 (+168)
24M → 40K
9:00/mi
7:42 split
25.2M
3:54:35
Rank: #20928 (+80)
40K → 25.2M
9:49/mi
3:23 split
Finish· 26.22 mi
4:03:46
Rank: #20856 (+72)
25.2M → Finish
9:01/mi
9:11 split

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time2:01:42
Pace9:17 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time2:02:04
Pace9:19 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:28:2128:549:1828:54
9:18
-
10K
6.21 mi11:56:4557:189:1328:24
9:08
-0:10
15K
9.32 mi12:26:421:27:159:2229:57
9:38
+0:30
20K
12.43 mi12:55:051:55:389:1828:23
9:08
-0:30
Half
13.11 mi13:01:092:01:429:176:04
8:54
-0:14
25K
15.53 mi13:23:122:23:459:1522:03
9:06
+0:12
30K
18.64 mi13:52:382:53:119:1729:26
9:28
+0:22
20M
20.00 mi14:05:313:06:049:1812:53
9:29
+0:01
21M
21.00 mi14:15:253:15:589:209:54
9:54
+0:25
35K
21.75 mi14:22:153:22:489:196:50
9:08
-0:46
23M
23.00 mi14:33:493:34:229:1911:34
9:14
+0:06
24M
24.00 mi14:42:573:43:309:199:08
9:08
-0:06
40K
24.85 mi14:50:393:51:129:187:42
9:00
-0:08
25.2M
25.20 mi14:54:023:54:359:193:23
9:49
+0:49
Finish
26.22 mi15:03:134:03:469:189:11
9:01
-0:48

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

8:54 /mi

Average Pace

9:18 /mi

Slowest Pace

9:54 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:50:29

95% of race

Time at Steady Pace

13:17

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:18 /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 mi11:28:2128:549:1828:54
9:18
#23564
10K
6.21 mi11:56:4557:189:1328:24
9:08
#23282
15K
9.32 mi12:26:421:27:159:2229:57
9:38
#23631
20K
12.43 mi12:55:051:55:389:1828:23
9:08
#23152
Half
13.11 mi13:01:092:01:429:176:04
8:54
#23076
25K
15.53 mi13:23:122:23:459:1522:03
9:06
#22629
30K
18.64 mi13:52:382:53:119:1729:26
9:28
#22130
20M
20.00 mi14:05:313:06:049:1812:53
9:29
#21888
21M
21.00 mi14:15:253:15:589:209:54
9:54
#21657
35K
21.75 mi14:22:153:22:489:196:50
9:08
#21568
23M
23.00 mi14:33:493:34:229:1911:34
9:14
#21316
24M
24.00 mi14:42:573:43:309:199:08
9:08
#21176
40K
24.85 mi14:50:393:51:129:187:42
9:00
#21008
25.2M
25.20 mi14:54:023:54:359:193:23
9:49
#20928
Finish
26.22 mi15:03:134:03:469:189:11
9:01
#20856
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi235649467946724123(Top 85%)9740(Top 80%)9740(Top 748%)
10K6.21 mi3.10 mi23282+2829306+1619306+16122966(Top 81%)9113(Top 75%)9113(Top 699%)
15K9.32 mi3.11 mi23631-3499474-1689474-16824123(Top 85%)9740(Top 80%)9740(Top 748%)
20K12.43 mi3.11 mi23152+4799211+2639211+26321619(Top 76%)8380(Top 69%)8380(Top 643%)
Half13.11 mi0.68 mi23076+769167+449167+4421388(Top 75%)8249(Top 67%)8249(Top 633%)
25K15.53 mi2.42 mi22629+4478943+2248943+22420352(Top 72%)7731(Top 63%)7731(Top 593%)
30K18.64 mi3.11 mi22130+4998696+2478696+24719850(Top 70%)7579(Top 62%)7579(Top 582%)
20M20.00 mi1.36 mi21888+2428574+1228574+12219107(Top 67%)7323(Top 60%)7323(Top 562%)
21M21.00 mi1.00 mi21657+2318476+988476+9817933(Top 63%)6763(Top 55%)6763(Top 519%)
35K21.75 mi0.75 mi21568+898440+368440+3618924(Top 67%)7421(Top 61%)7421(Top 570%)
23M23.00 mi1.25 mi21316+2528332+1088332+10817534(Top 62%)6753(Top 55%)6753(Top 518%)
24M24.00 mi1.00 mi21176+1408277+558277+5518075(Top 64%)7085(Top 58%)7085(Top 544%)
40K24.85 mi0.85 mi21008+1688212+658212+6516391(Top 58%)6268(Top 51%)6268(Top 481%)
25.2M25.20 mi0.35 mi20928+808170+428170+4216251(Top 57%)6236(Top 51%)6236(Top 479%)
Finish26.22 mi1.02 mi20856+728145+258145+2519142(Top 67%)7692(Top 63%)7692(Top 590%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 85%
×21stories
+97ft-345ft

Overall

24123

Females

9740

F50-54

9740

5K→10K

3.1 - 6.2 mi

Top 81%
×5stories
+79ft-138ft

Overall

22966

Females

9113

F50-54

9113

10K→15K

6.2 - 9.3 mi

Top 85%
×3stories
+67ft-78ft

Overall

24123

Females

9740

F50-54

9740

15K→20K

9.3 - 12.4 mi

Top 76%
×5stories
+106ft-86ft

Overall

21619

Females

8380

F50-54

8380

20K→Half

12.4 - 13.1 mi

Top 75%
×2stories
+19ft-37ft

Overall

21388

Females

8249

F50-54

8249

Half→25K

13.1 - 15.5 mi

Top 72%
×4stories
+66ft-88ft

Overall

20352

Females

7731

F50-54

7731

25K→30K

15.5 - 18.6 mi

Top 70%
×9stories
+181ft-148ft

Overall

19850

Females

7579

F50-54

7579

30K→20M

18.6 - 20.0 mi

Top 67%
×5stories
+64ft-50ft

Overall

19107

Females

7323

F50-54

7323

20M→21M

20.0 - 21.0 mi

Top 63%
×8stories
+106ft-24ft

Overall

17933

Females

6763

F50-54

6763

21M→35K

21.0 - 21.8 mi

Top 67%
×7stories
+17ft-86ft

Overall

18924

Females

7421

F50-54

7421

35K→23M

21.8 - 23.0 mi

Top 62%
×5stories
+23ft-63ft

Overall

17534

Females

6753

F50-54

6753

23M→24M

23.0 - 24.0 mi

Top 64%
×6stories
+12ft-82ft

Overall

18075

Females

7085

F50-54

7085

24M→40K

24.0 - 24.9 mi

Top 58%
×1story
+6ft-20ft

Overall

16391

Females

6268

F50-54

6268

40K→25.2M

24.9 - 25.2 mi

Top 57%
×1story
+13ft-16ft

Overall

16251

Females

6236

F50-54

6236

25.2M→Finish

25.2 - 26.2 mi

Top 67%
×2stories
+22ft-21ft

Overall

19142

Females

7692

F50-54

7692

Passing Analysis

Category:
Athletes Passed
3315
Passed By
607
Net Change
+2708
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23564
5K → 10K392110+282#23564#23282
10K → 15K81430-349#23282#23631
15K → 20K4867+479#23631#23152
20K → Half804+76#23152#23076
Half → 25K4492+447#23076#22629
25K → 30K51213+499#22629#22130
30K → 20M2442+242#22130#21888
20M → 21M2387+231#21888#21657
21M → 35K956+89#21657#21568
35K → 23M2608+252#21568#21316
23M → 24M1455+140#21316#21176
24M → 40K1691+168#21176#21008
40K → 25.2M844+80#21008#20928
25.2M → Finish808+72#20928#20856
TOTALS3315607+2708
📊

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