Boston Marathon logo
BOSTON MARATHON 2025

Megan Chandler

Bib: 20164•F

IN

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 50%
Masters (Masters Women)
#0 / 6759
Top 38%
Division (F40-44)
#0 / 1718
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:59
Rank: #16936
Start → 5K
24:59 | 8:02/mi
10K· 6.21 mi
50:27
Rank: #17406 (-470)
5K → 10K
25:28 | 8:12/mi
15K· 9.32 mi
1:15:53
Rank: #17371 (+35)
10K → 15K
25:26 | 8:11/mi
20K· 12.43 mi
1:41:42
Rank: #17242 (+129)
15K → 20K
25:49 | 8:19/mi
Half· 13.11 mi
1:47:19
Rank: #17239 (+3)
20K → Half
5:37 | 8:14/mi
25K· 15.53 mi
2:07:41
Rank: #17071 (+168)
Half → 25K
20:22 | 8:24/mi
30K· 18.64 mi
2:35:20
Rank: #17039 (+32)
25K → 30K
27:39 | 8:54/mi
20M
2:47:44
Rank: #17059 (-20)
30K → 20M
12:24 | 9:07/mi
21M
2:57:21
Rank: #16982 (+77)
20M → 21M
9:37 | 9:37/mi
35K· 21.75 mi
3:04:05
Rank: #17036 (-54)
21M → 35K
6:44 | 9:00/mi
23M
3:15:42
Rank: #17072 (-36)
35K → 23M
11:37 | 9:17/mi
24M
3:24:52
Rank: #17139 (-67)
23M → 24M
9:10 | 9:10/mi
40K· 24.85 mi
3:32:50
Rank: #17165 (-26)
24M → 40K
7:58 | 9:19/mi
25.2M
3:36:14
Rank: #17147 (+18)
40K → 25.2M
3:24 | 9:52/mi
Finish· 26.22 mi
3:44:47
Rank: #17073 (+74)
25.2M → Finish
8:33 | 8:23/mi

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:47:19
Pace8:11 /mi
2nd Half
Distance13.11 mi
Time1:57:28
Pace8:58 /mi
📊Positive Split: 9.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:2524:598:0224:59
8:02
-
10K
6.21 mi11:44:5350:278:0725:28
8:12
+0:10
15K
9.32 mi12:10:191:15:538:0825:26
8:11
-0:01
20K
12.43 mi12:36:081:41:428:1125:49
8:19
+0:08
Half
13.11 mi12:41:451:47:198:115:37
8:14
-0:05
25K
15.53 mi13:02:072:07:418:1320:22
8:24
+0:10
30K
18.64 mi13:29:462:35:208:2027:39
8:54
+0:30
20M
20.00 mi13:42:102:47:448:2312:24
9:07
+0:13
21M
21.00 mi13:51:472:57:218:279:37
9:37
+0:30
35K
21.75 mi13:58:313:04:058:286:44
9:00
-0:37
23M
23.00 mi14:10:083:15:428:3111:37
9:17
+0:17
24M
24.00 mi14:19:183:24:528:329:10
9:10
-0:07
40K
24.85 mi14:27:163:32:508:347:58
9:19
+0:09
25.2M
25.20 mi14:30:403:36:148:353:24
9:52
+0:33
Finish
26.22 mi14:39:133:44:478:358:33
8:23
-1:29

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

8:02 /mi

Average Pace

8:35 /mi

Slowest Pace

9:52 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:16:14

61% of race

Time at Steady Pace

55:57

25% of race

Time at Slower Pace

32:36

15% of race

Average Pace: 8:34 /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 mi11:19:2524:598:0224:59
8:02
#16936
10K
6.21 mi11:44:5350:278:0725:28
8:12
#17406
15K
9.32 mi12:10:191:15:538:0825:26
8:11
#17371
20K
12.43 mi12:36:081:41:428:1125:49
8:19
#17242
Half
13.11 mi12:41:451:47:198:115:37
8:14
#17239
25K
15.53 mi13:02:072:07:418:1320:22
8:24
#17071
30K
18.64 mi13:29:462:35:208:2027:39
8:54
#17039
20M
20.00 mi13:42:102:47:448:2312:24
9:07
#17059
21M
21.00 mi13:51:472:57:218:279:37
9:37
#16982
35K
21.75 mi13:58:313:04:058:286:44
9:00
#17036
23M
23.00 mi14:10:083:15:428:3111:37
9:17
#17072
24M
24.00 mi14:19:183:24:528:329:10
9:10
#17139
40K
24.85 mi14:27:163:32:508:347:58
9:19
#17165
25.2M
25.20 mi14:30:403:36:148:353:24
9:52
#17147
Finish
26.22 mi14:39:133:44:478:358:33
8:23
#17073
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi169365708570817323(Top 61%)5914(Top 48%)5914(Top 344%)
10K6.21 mi3.10 mi17406-4705978-2705978-27017880(Top 63%)6228(Top 51%)6228(Top 363%)
15K9.32 mi3.11 mi17371+355936+425936+4217323(Top 61%)5914(Top 48%)5914(Top 344%)
20K12.43 mi3.11 mi17242+1295884+525884+5217000(Top 60%)5774(Top 47%)5774(Top 336%)
Half13.11 mi0.68 mi17239+35888-45888-417533(Top 62%)6059(Top 50%)6059(Top 353%)
25K15.53 mi2.42 mi17071+1685809+795809+7916596(Top 58%)5632(Top 46%)5632(Top 328%)
30K18.64 mi3.11 mi17039+325843-345843-3417156(Top 60%)6108(Top 50%)6108(Top 356%)
20M20.00 mi1.36 mi17059-205882-395882-3917445(Top 61%)6390(Top 52%)6390(Top 372%)
21M21.00 mi1.00 mi16982+775868+145868+1416648(Top 59%)6058(Top 50%)6058(Top 353%)
35K21.75 mi0.75 mi17036-545921-535921-5318242(Top 64%)7034(Top 58%)7034(Top 409%)
23M23.00 mi1.25 mi17072-365981-605981-6017695(Top 62%)6837(Top 56%)6837(Top 398%)
24M24.00 mi1.00 mi17139-676035-546035-5418199(Top 64%)7138(Top 58%)7138(Top 415%)
40K24.85 mi0.85 mi17165-266080-456080-4517940(Top 63%)7094(Top 58%)7094(Top 413%)
25.2M25.20 mi0.35 mi17147+186080608016436(Top 58%)6297(Top 51%)6297(Top 367%)
Finish26.22 mi1.02 mi17073+746058+226058+2215545(Top 55%)5785(Top 47%)5785(Top 337%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 61%
×21stories
+97ft-345ft

Overall

17323

Females

5914

F40-44

5914

5K→10K

3.1 - 6.2 mi

Top 63%
×5stories
+79ft-138ft

Overall

17880

Females

6228

F40-44

6228

10K→15K

6.2 - 9.3 mi

Top 61%
×3stories
+67ft-78ft

Overall

17323

Females

5914

F40-44

5914

15K→20K

9.3 - 12.4 mi

Top 60%
×5stories
+106ft-86ft

Overall

17000

Females

5774

F40-44

5774

20K→Half

12.4 - 13.1 mi

Top 62%
×2stories
+19ft-37ft

Overall

17533

Females

6059

F40-44

6059

Half→25K

13.1 - 15.5 mi

Top 58%
×4stories
+66ft-88ft

Overall

16596

Females

5632

F40-44

5632

25K→30K

15.5 - 18.6 mi

Top 60%
×9stories
+181ft-148ft

Overall

17156

Females

6108

F40-44

6108

30K→20M

18.6 - 20.0 mi

Top 61%
×5stories
+64ft-50ft

Overall

17445

Females

6390

F40-44

6390

20M→21M

20.0 - 21.0 mi

Top 59%
×8stories
+106ft-24ft

Overall

16648

Females

6058

F40-44

6058

21M→35K

21.0 - 21.8 mi

Top 64%
×7stories
+17ft-86ft

Overall

18242

Females

7034

F40-44

7034

35K→23M

21.8 - 23.0 mi

Top 62%
×5stories
+23ft-63ft

Overall

17695

Females

6837

F40-44

6837

23M→24M

23.0 - 24.0 mi

Top 64%
×6stories
+12ft-82ft

Overall

18199

Females

7138

F40-44

7138

24M→40K

24.0 - 24.9 mi

Top 63%
×1story
+6ft-20ft

Overall

17940

Females

7094

F40-44

7094

40K→25.2M

24.9 - 25.2 mi

Top 58%
×1story
+13ft-16ft

Overall

16436

Females

6297

F40-44

6297

25.2M→Finish

25.2 - 26.2 mi

Top 55%
×2stories
+22ft-21ft

Overall

15545

Females

5785

F40-44

5785

Passing Analysis

Category:
Athletes Passed
1776
Passed By
1913
Net Change
-137
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16936
5K → 10K135605-470#16936#17406
10K → 15K228193+35#17406#17371
15K → 20K239110+129#17371#17242
20K → Half3229+3#17242#17239
Half → 25K24274+168#17239#17071
25K → 30K236204+32#17071#17039
30K → 20M90110-20#17039#17059
20M → 21M15477+77#17059#16982
21M → 35K47101-54#16982#17036
35K → 23M102138-36#17036#17072
23M → 24M62129-67#17072#17139
24M → 40K6187-26#17139#17165
40K → 25.2M4022+18#17165#17147
25.2M → Finish10834+74#17147#17073
TOTALS17761913-137
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing