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BOSTON MARATHON 2025

Jacquelyn Mardesich

Bib: 23841•F

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F60-64)
#0 / 624
Top 30%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:38
Rank: #18438
Start → 5K
8:15/mi
25:38 split
10K· 6.21 mi
52:24
Rank: #19445 (-1007)
5K → 10K
8:37/mi
26:46 split
15K· 9.32 mi
1:19:58
Rank: #20132 (-687)
10K → 15K
8:52/mi
27:34 split
20K· 12.43 mi
1:48:43
Rank: #20672 (-540)
15K → 20K
9:15/mi
28:45 split
Half· 13.11 mi
1:55:05
Rank: #20817 (-145)
20K → Half
9:20/mi
6:22 split
25K· 15.53 mi
2:18:21
Rank: #21139 (-322)
Half → 25K
9:36/mi
23:16 split
30K· 18.64 mi
2:48:49
Rank: #21134 (+5)
25K → 30K
9:48/mi
30:28 split
20M
3:02:05
Rank: #21045 (+89)
30K → 20M
9:46/mi
13:16 split
21M
3:12:45
Rank: #21015 (+30)
20M → 21M
10:40/mi
10:40 split
35K· 21.75 mi
3:19:45
Rank: #20969 (+46)
21M → 35K
9:21/mi
7:00 split
23M
3:31:54
Rank: #20889 (+80)
35K → 23M
9:42/mi
12:09 split
24M
3:41:42
Rank: #20891 (-2)
23M → 24M
9:48/mi
9:48 split
40K· 24.85 mi
3:50:04
Rank: #20845 (+46)
24M → 40K
9:47/mi
8:22 split
25.2M
3:53:43
Rank: #20805 (+40)
40K → 25.2M
10:35/mi
3:39 split
Finish· 26.22 mi
4:02:56
Rank: #20765 (+40)
25.2M → Finish
9:03/mi
9:13 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:55:05
Pace8:47 /mi
2nd Half
Distance13.11 mi
Time2:07:51
Pace9:45 /mi
📊Positive Split: 11.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:24:4925:388:1525:38
8:15
-
10K
6.21 mi11:51:3552:248:2626:46
8:37
+0:22
15K
9.32 mi12:19:091:19:588:3527:34
8:52
+0:15
20K
12.43 mi12:47:541:48:438:4528:45
9:15
+0:23
Half
13.11 mi12:54:161:55:058:476:22
9:20
+0:05
25K
15.53 mi13:17:322:18:218:5423:16
9:36
+0:16
30K
18.64 mi13:48:002:48:499:0330:28
9:48
+0:12
20M
20.00 mi14:01:163:02:059:0613:16
9:46
-0:02
21M
21.00 mi14:11:563:12:459:1110:40
10:40
+0:54
35K
21.75 mi14:18:563:19:459:117:00
9:21
-1:19
23M
23.00 mi14:31:053:31:549:1312:09
9:42
+0:21
24M
24.00 mi14:40:533:41:429:149:48
9:48
+0:06
40K
24.85 mi14:49:153:50:049:158:22
9:47
-0:01
25.2M
25.20 mi14:52:543:53:439:163:39
10:35
+0:48
Finish
26.22 mi15:02:074:02:569:169:13
9:03
-1:32

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

9:16 /mi

Slowest Pace

10:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:57:56

49% of race

Time at Steady Pace

1:50:41

46% of race

Time at Slower Pace

14:19

6% of race

Average Pace: 9:16 /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 mi11:24:4925:388:1525:38
8:15
#18438
10K
6.21 mi11:51:3552:248:2626:46
8:37
#19445
15K
9.32 mi12:19:091:19:588:3527:34
8:52
#20132
20K
12.43 mi12:47:541:48:438:4528:45
9:15
#20672
Half
13.11 mi12:54:161:55:058:476:22
9:20
#20817
25K
15.53 mi13:17:322:18:218:5423:16
9:36
#21139
30K
18.64 mi13:48:002:48:499:0330:28
9:48
#21134
20M
20.00 mi14:01:163:02:059:0613:16
9:46
#21045
21M
21.00 mi14:11:563:12:459:1110:40
10:40
#21015
35K
21.75 mi14:18:563:19:459:117:00
9:21
#20969
23M
23.00 mi14:31:053:31:549:1312:09
9:42
#20889
24M
24.00 mi14:40:533:41:429:149:48
9:48
#20891
40K
24.85 mi14:49:153:50:049:158:22
9:47
#20845
25.2M
25.20 mi14:52:543:53:439:163:39
10:35
#20805
Finish
26.22 mi15:02:074:02:569:169:13
9:03
#20765
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF60-64Seg. OverallSeg. FemalesSeg. F60-64
5K3.11 mi3.11 mi184386603660321425(Top 75%)8233(Top 67%)8233(Top 1319%)
10K6.21 mi3.10 mi19445-10077153-5507153-55020445(Top 72%)7714(Top 63%)7714(Top 1236%)
15K9.32 mi3.11 mi20132-6877546-3937546-39321425(Top 75%)8233(Top 67%)8233(Top 1319%)
20K12.43 mi3.11 mi20672-5407853-3077853-30722097(Top 78%)8638(Top 71%)8638(Top 1384%)
Half13.11 mi0.68 mi20817-1457933-807933-8023066(Top 81%)9179(Top 75%)9179(Top 1471%)
25K15.53 mi2.42 mi21139-3228118-1858118-18522174(Top 78%)8747(Top 72%)8747(Top 1402%)
30K18.64 mi3.11 mi21134+58159-418159-4121027(Top 74%)8245(Top 67%)8245(Top 1321%)
20M20.00 mi1.36 mi21045+898133+268133+2620181(Top 71%)7901(Top 65%)7901(Top 1266%)
21M21.00 mi1.00 mi21015+308129+48129+420525(Top 72%)8198(Top 67%)8198(Top 1314%)
35K21.75 mi0.75 mi20969+468118+118118+1119822(Top 70%)7888(Top 65%)7888(Top 1264%)
23M23.00 mi1.25 mi20889+808101+178101+1719471(Top 69%)7766(Top 64%)7766(Top 1245%)
24M24.00 mi1.00 mi20891-28123-228123-2220732(Top 73%)8463(Top 69%)8463(Top 1356%)
40K24.85 mi0.85 mi20845+468114+98114+919786(Top 70%)8038(Top 66%)8038(Top 1288%)
25.2M25.20 mi0.35 mi20805+408102+128102+1219349(Top 68%)7837(Top 64%)7837(Top 1256%)
Finish26.22 mi1.02 mi20765+408095+78095+719285(Top 68%)7762(Top 63%)7762(Top 1244%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 75%
×21story building
+97ft-345ft

Overall

21425

Females

8233

F60-64

8233

5K→10K

3.1 - 6.2 mi

Top 72%
×5story building
+79ft-138ft

Overall

20445

Females

7714

F60-64

7714

10K→15K

6.2 - 9.3 mi

Top 75%
×3story building
+67ft-78ft

Overall

21425

Females

8233

F60-64

8233

15K→20K

9.3 - 12.4 mi

Top 78%
×5story building
+106ft-86ft

Overall

22097

Females

8638

F60-64

8638

20K→Half

12.4 - 13.1 mi

Top 81%
×2story building
+19ft-37ft

Overall

23066

Females

9179

F60-64

9179

Half→25K

13.1 - 15.5 mi

Top 78%
×4story building
+66ft-88ft

Overall

22174

Females

8747

F60-64

8747

25K→30K

15.5 - 18.6 mi

Top 74%
×9story building
+181ft-148ft

Overall

21027

Females

8245

F60-64

8245

30K→20M

18.6 - 20.0 mi

Top 71%
×5story building
+64ft-50ft

Overall

20181

Females

7901

F60-64

7901

20M→21M

20.0 - 21.0 mi

Top 72%
×8story building
+106ft-24ft

Overall

20525

Females

8198

F60-64

8198

21M→35K

21.0 - 21.8 mi

Top 70%
×7story building
+17ft-86ft

Overall

19822

Females

7888

F60-64

7888

35K→23M

21.8 - 23.0 mi

Top 69%
×5story building
+23ft-63ft

Overall

19471

Females

7766

F60-64

7766

23M→24M

23.0 - 24.0 mi

Top 73%
×6story building
+12ft-82ft

Overall

20732

Females

8463

F60-64

8463

24M→40K

24.0 - 24.9 mi

Top 70%
×1story
+6ft-20ft

Overall

19786

Females

8038

F60-64

8038

40K→25.2M

24.9 - 25.2 mi

Top 68%
×1story
+13ft-16ft

Overall

19349

Females

7837

F60-64

7837

25.2M→Finish

25.2 - 26.2 mi

Top 68%
×2story building
+22ft-21ft

Overall

19285

Females

7762

F60-64

7762

Passing Analysis

Category:
Athletes Passed
1149
Passed By
3476
Net Change
-2327
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18438
5K → 10K461053-1007#18438#19445
10K → 15K53740-687#19445#20132
15K → 20K72612-540#20132#20672
20K → Half7152-145#20672#20817
Half → 25K75397-322#20817#21139
25K → 30K209204+5#21139#21134
30K → 20M13849+89#21134#21045
20M → 21M10575+30#21045#21015
21M → 35K7832+46#21015#20969
35K → 23M13252+80#20969#20889
23M → 24M5557-2#20889#20891
24M → 40K7226+46#20891#20845
40K → 25.2M488+40#20845#20805
25.2M → Finish5919+40#20805#20765
TOTALS11493476-2327
📊

Passing Visuals

Category:
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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