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BOSTON MARATHON 2025

Jacquelyn Callander

Bib: 14217•F

CA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 27%
Gender (Female)
#0 / 12228
Top 10%
Division (F18-39)
#0 / 5469
Top 19%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:42
Rank: #7717
Start → 5K
21:42 | 6:59/mi
10K· 6.21 mi
43:20
Rank: #7686 (+31)
5K → 10K
21:38 | 6:58/mi
15K· 9.32 mi
1:05:08
Rank: #7681 (+5)
10K → 15K
21:48 | 7:01/mi
20K· 12.43 mi
1:27:34
Rank: #7808 (-127)
15K → 20K
22:26 | 7:13/mi
Half· 13.11 mi
1:32:25
Rank: #7829 (-21)
20K → Half
4:51 | 7:07/mi
25K· 15.53 mi
1:50:12
Rank: #7888 (-59)
Half → 25K
17:47 | 7:20/mi
30K· 18.64 mi
2:13:52
Rank: #7910 (-22)
25K → 30K
23:40 | 7:37/mi
20M
2:24:20
Rank: #7876 (+34)
30K → 20M
10:28 | 7:42/mi
21M
2:32:44
Rank: #7912 (-36)
20M → 21M
8:24 | 8:24/mi
35K· 21.75 mi
2:38:17
Rank: #7878 (+34)
21M → 35K
5:33 | 7:25/mi
23M
2:47:53
Rank: #7809 (+69)
35K → 23M
9:36 | 7:40/mi
24M
2:55:21
Rank: #7767 (+42)
23M → 24M
7:28 | 7:28/mi
40K· 24.85 mi
3:01:56
Rank: #7747 (+20)
24M → 40K
6:35 | 7:42/mi
25.2M
3:04:54
Rank: #7741 (+6)
40K → 25.2M
2:58 | 8:36/mi
Finish· 26.22 mi
3:12:30
Rank: #7743 (-2)
25.2M → Finish
7:36 | 7:27/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:32:25
Pace7:03 /mi
2nd Half
Distance13.11 mi
Time1:40:05
Pace7:38 /mi
📊Positive Split: 8.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:1321:426:5921:42
6:59
-
10K
6.21 mi11:12:5143:206:5821:38
6:58
-0:01
15K
9.32 mi11:34:391:05:086:5921:48
7:01
+0:03
20K
12.43 mi11:57:051:27:347:0322:26
7:13
+0:12
Half
13.11 mi12:01:561:32:257:034:51
7:07
-0:06
25K
15.53 mi12:19:431:50:127:0617:47
7:20
+0:13
30K
18.64 mi12:43:232:13:527:1123:40
7:37
+0:17
20M
20.00 mi12:53:512:24:207:1310:28
7:42
+0:05
21M
21.00 mi13:02:152:32:447:168:24
8:24
+0:42
35K
21.75 mi13:07:482:38:177:175:33
7:25
-0:59
23M
23.00 mi13:17:242:47:537:189:36
7:40
+0:15
24M
24.00 mi13:24:522:55:217:187:28
7:28
-0:12
40K
24.85 mi13:31:273:01:567:196:35
7:42
+0:14
25.2M
25.20 mi13:34:253:04:547:202:58
8:36
+0:54
Finish
26.22 mi13:42:013:12:307:217:36
7:27
-1:09

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

6:58 /mi

Average Pace

7:21 /mi

Slowest Pace

8:36 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:32:25

48% of race

Time at Steady Pace

1:11:40

37% of race

Time at Slower Pace

28:25

15% of race

Average Pace: 7:21 /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 mi10:51:1321:426:5921:42
6:59
#7717
10K
6.21 mi11:12:5143:206:5821:38
6:58
#7686
15K
9.32 mi11:34:391:05:086:5921:48
7:01
#7681
20K
12.43 mi11:57:051:27:347:0322:26
7:13
#7808
Half
13.11 mi12:01:561:32:257:034:51
7:07
#7829
25K
15.53 mi12:19:431:50:127:0617:47
7:20
#7888
30K
18.64 mi12:43:232:13:527:1123:40
7:37
#7910
20M
20.00 mi12:53:512:24:207:1310:28
7:42
#7876
21M
21.00 mi13:02:152:32:447:168:24
8:24
#7912
35K
21.75 mi13:07:482:38:177:175:33
7:25
#7878
23M
23.00 mi13:17:242:47:537:189:36
7:40
#7809
24M
24.00 mi13:24:522:55:217:187:28
7:28
#7767
40K
24.85 mi13:31:273:01:567:196:35
7:42
#7747
25.2M
25.20 mi13:34:253:04:547:202:58
8:36
#7741
Finish
26.22 mi13:42:013:12:307:217:36
7:27
#7743
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi77178938937745(Top 27%)954(Top 8%)954(Top 17%)
10K6.21 mi3.10 mi7686+31883+10883+107690(Top 27%)899(Top 7%)899(Top 16%)
15K9.32 mi3.11 mi7681+5899-16899-167745(Top 27%)954(Top 8%)954(Top 17%)
20K12.43 mi3.11 mi7808-127955-56955-568393(Top 30%)1267(Top 10%)1267(Top 23%)
Half13.11 mi0.68 mi7829-21964-9964-98408(Top 30%)1246(Top 10%)1246(Top 23%)
25K15.53 mi2.42 mi7888-591004-401004-408644(Top 30%)1482(Top 12%)1482(Top 27%)
30K18.64 mi3.11 mi7910-221075-711075-718588(Top 30%)1634(Top 13%)1634(Top 30%)
20M20.00 mi1.36 mi7876+341098-231098-238368(Top 29%)1689(Top 14%)1689(Top 31%)
21M21.00 mi1.00 mi7912-361142-441142-449848(Top 35%)2532(Top 21%)2532(Top 46%)
35K21.75 mi0.75 mi7878+341151-91151-98080(Top 28%)1706(Top 14%)1706(Top 31%)
23M23.00 mi1.25 mi7809+691172-211172-217710(Top 27%)1688(Top 14%)1688(Top 31%)
24M24.00 mi1.00 mi7767+421188-161188-167477(Top 26%)1645(Top 13%)1645(Top 30%)
40K24.85 mi0.85 mi7747+201217-291217-298097(Top 29%)2024(Top 17%)2024(Top 37%)
25.2M25.20 mi0.35 mi7741+61230-131230-139450(Top 33%)2727(Top 22%)2727(Top 50%)
Finish26.22 mi1.02 mi7743-21254-241254-248904(Top 31%)2478(Top 20%)2478(Top 45%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 27%
×21stories
+97ft-345ft

Overall

7745

Females

954

F18-39

954

5K→10K

3.1 - 6.2 mi

Top 27%
×5stories
+79ft-138ft

Overall

7690

Females

899

F18-39

899

10K→15K

6.2 - 9.3 mi

Top 27%
×3stories
+67ft-78ft

Overall

7745

Females

954

F18-39

954

15K→20K

9.3 - 12.4 mi

Top 30%
×5stories
+106ft-86ft

Overall

8393

Females

1267

F18-39

1267

20K→Half

12.4 - 13.1 mi

Top 30%
×2stories
+19ft-37ft

Overall

8408

Females

1246

F18-39

1246

Half→25K

13.1 - 15.5 mi

Top 30%
×4stories
+66ft-88ft

Overall

8644

Females

1482

F18-39

1482

25K→30K

15.5 - 18.6 mi

Top 30%
×9stories
+181ft-148ft

Overall

8588

Females

1634

F18-39

1634

30K→20M

18.6 - 20.0 mi

Top 29%
×5stories
+64ft-50ft

Overall

8368

Females

1689

F18-39

1689

20M→21M

20.0 - 21.0 mi

Top 35%
×8stories
+106ft-24ft

Overall

9848

Females

2532

F18-39

2532

21M→35K

21.0 - 21.8 mi

Top 28%
×7stories
+17ft-86ft

Overall

8080

Females

1706

F18-39

1706

35K→23M

21.8 - 23.0 mi

Top 27%
×5stories
+23ft-63ft

Overall

7710

Females

1688

F18-39

1688

23M→24M

23.0 - 24.0 mi

Top 26%
×6stories
+12ft-82ft

Overall

7477

Females

1645

F18-39

1645

24M→40K

24.0 - 24.9 mi

Top 29%
×1story
+6ft-20ft

Overall

8097

Females

2024

F18-39

2024

40K→25.2M

24.9 - 25.2 mi

Top 33%
×1story
+13ft-16ft

Overall

9450

Females

2727

F18-39

2727

25.2M→Finish

25.2 - 26.2 mi

Top 31%
×2stories
+22ft-21ft

Overall

8904

Females

2478

F18-39

2478

Passing Analysis

Category:
Athletes Passed
1408
Passed By
1434
Net Change
-26
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7717
5K → 10K208177+31#7717#7686
10K → 15K137132+5#7686#7681
15K → 20K96223-127#7681#7808
20K → Half2142-21#7808#7829
Half → 25K96155-59#7829#7888
25K → 30K181203-22#7888#7910
30K → 20M10975+34#7910#7876
20M → 21M95131-36#7876#7912
21M → 35K6935+34#7912#7878
35K → 23M13061+69#7878#7809
23M → 24M8846+42#7809#7767
24M → 40K8060+20#7767#7747
40K → 25.2M3428+6#7747#7741
25.2M → Finish6466-2#7741#7743
TOTALS14081434-26
📊

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