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BOSTON MARATHON 2025

Jessica Carlson

Bib: 16522•F

MN

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 34%
Gender (Female)
#0 / 12228
Top 17%
Division (F18-39)
#0 / 5469
Top 30%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:08
Rank: #8855
Start → 5K
22:08 | 7:07/mi
10K· 6.21 mi
44:26
Rank: #9048 (-193)
5K → 10K
22:18 | 7:11/mi
15K· 9.32 mi
1:06:36
Rank: #8890 (+158)
10K → 15K
22:10 | 7:08/mi
20K· 12.43 mi
1:28:56
Rank: #8604 (+286)
15K → 20K
22:20 | 7:11/mi
Half· 13.11 mi
1:33:45
Rank: #8552 (+52)
20K → Half
4:49 | 7:04/mi
25K· 15.53 mi
1:53:20
Rank: #9542 (-990)
Half → 25K
19:35 | 8:05/mi
30K· 18.64 mi
2:16:53
Rank: #9233 (+309)
25K → 30K
23:33 | 7:35/mi
20M
2:27:28
Rank: #9176 (+57)
30K → 20M
10:35 | 7:47/mi
21M
2:36:31
Rank: #9436 (-260)
20M → 21M
9:03 | 9:03/mi
35K· 21.75 mi
2:42:21
Rank: #9450 (-14)
21M → 35K
5:50 | 7:48/mi
23M
2:52:55
Rank: #9663 (-213)
35K → 23M
10:34 | 8:26/mi
24M
3:01:20
Rank: #9841 (-178)
23M → 24M
8:25 | 8:25/mi
40K· 24.85 mi
3:08:04
Rank: #9797 (+44)
24M → 40K
6:44 | 7:53/mi
25.2M
3:11:03
Rank: #9784 (+13)
40K → 25.2M
2:59 | 8:39/mi
Finish· 26.22 mi
3:18:30
Rank: #9679 (+105)
25.2M → Finish
7:27 | 7:19/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:33:45
Pace7:09 /mi
2nd Half
Distance13.11 mi
Time1:44:45
Pace7:59 /mi
📊Positive Split: 11.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:55:4422:087:0722:08
7:07
-
10K
6.21 mi11:18:0244:267:0922:18
7:11
+0:04
15K
9.32 mi11:40:121:06:367:0922:10
7:08
-0:03
20K
12.43 mi12:02:321:28:567:0922:20
7:11
+0:03
Half
13.11 mi12:07:211:33:457:094:49
7:04
-0:07
25K
15.53 mi12:26:561:53:207:1819:35
8:05
+1:01
30K
18.64 mi12:50:292:16:537:2123:33
7:35
-0:30
20M
20.00 mi13:01:042:27:287:2210:35
7:47
+0:12
21M
21.00 mi13:10:072:36:317:279:03
9:03
+1:16
35K
21.75 mi13:15:572:42:217:285:50
7:48
-1:15
23M
23.00 mi13:26:312:52:557:3110:34
8:26
+0:38
24M
24.00 mi13:34:563:01:207:338:25
8:25
-0:01
40K
24.85 mi13:41:403:08:047:346:44
7:53
-0:32
25.2M
25.20 mi13:44:393:11:037:352:59
8:39
+0:46
Finish
26.22 mi13:52:063:18:307:357:27
7:19
-1:20

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

7:04 /mi

Average Pace

7:35 /mi

Slowest Pace

9:03 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:41:12

51% of race

Time at Steady Pace

1:06:17

33% of race

Time at Slower Pace

31:01

16% of race

Average Pace: 7:34 /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 mi10:55:4422:087:0722:08
7:07
#8855
10K
6.21 mi11:18:0244:267:0922:18
7:11
#9048
15K
9.32 mi11:40:121:06:367:0922:10
7:08
#8890
20K
12.43 mi12:02:321:28:567:0922:20
7:11
#8604
Half
13.11 mi12:07:211:33:457:094:49
7:04
#8552
25K
15.53 mi12:26:561:53:207:1819:35
8:05
#9542
30K
18.64 mi12:50:292:16:537:2123:33
7:35
#9233
20M
20.00 mi13:01:042:27:287:2210:35
7:47
#9176
21M
21.00 mi13:10:072:36:317:279:03
9:03
#9436
35K
21.75 mi13:15:572:42:217:285:50
7:48
#9450
23M
23.00 mi13:26:312:52:557:3110:34
8:26
#9663
24M
24.00 mi13:34:563:01:207:338:25
8:25
#9841
40K
24.85 mi13:41:403:08:047:346:44
7:53
#9797
25.2M
25.20 mi13:44:393:11:037:352:59
8:39
#9784
Finish
26.22 mi13:52:063:18:307:357:27
7:19
#9679
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi8855131313138600(Top 30%)1268(Top 10%)1268(Top 23%)
10K6.21 mi3.10 mi9048-1931398-851398-859311(Top 33%)1520(Top 12%)1520(Top 28%)
15K9.32 mi3.11 mi8890+1581350+481350+488600(Top 30%)1268(Top 10%)1268(Top 23%)
20K12.43 mi3.11 mi8604+2861256+941256+948122(Top 29%)1157(Top 9%)1157(Top 21%)
Half13.11 mi0.68 mi8552+521243+131243+138087(Top 28%)1131(Top 9%)1131(Top 21%)
25K15.53 mi2.42 mi9542-9901701-4581701-45814476(Top 51%)4467(Top 37%)4467(Top 82%)
30K18.64 mi3.11 mi9233+3091611+901611+908319(Top 29%)1521(Top 12%)1521(Top 28%)
20M20.00 mi1.36 mi9176+571615-41615-48967(Top 32%)1974(Top 16%)1974(Top 36%)
21M21.00 mi1.00 mi9436-2601771-1561771-15613809(Top 49%)4515(Top 37%)4515(Top 83%)
35K21.75 mi0.75 mi9450-141789-181789-1810818(Top 38%)3001(Top 25%)3001(Top 55%)
23M23.00 mi1.25 mi9663-2131931-1421931-14212929(Top 46%)4223(Top 35%)4223(Top 77%)
24M24.00 mi1.00 mi9841-1782060-1292060-12913996(Top 49%)4815(Top 39%)4815(Top 88%)
40K24.85 mi0.85 mi9797+442078-182078-189319(Top 33%)2593(Top 21%)2593(Top 47%)
25.2M25.20 mi0.35 mi9784+132095-172095-179749(Top 34%)2875(Top 24%)2875(Top 53%)
Finish26.22 mi1.02 mi9679+1052083+122083+127883(Top 28%)2024(Top 17%)2024(Top 37%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 30%
×21stories
+97ft-345ft

Overall

8600

Females

1268

F18-39

1268

5K→10K

3.1 - 6.2 mi

Top 33%
×5stories
+79ft-138ft

Overall

9311

Females

1520

F18-39

1520

10K→15K

6.2 - 9.3 mi

Top 30%
×3stories
+67ft-78ft

Overall

8600

Females

1268

F18-39

1268

15K→20K

9.3 - 12.4 mi

Top 29%
×5stories
+106ft-86ft

Overall

8122

Females

1157

F18-39

1157

20K→Half

12.4 - 13.1 mi

Top 28%
×2stories
+19ft-37ft

Overall

8087

Females

1131

F18-39

1131

Half→25K

13.1 - 15.5 mi

Top 51%
×4stories
+66ft-88ft

Overall

14476

Females

4467

F18-39

4467

25K→30K

15.5 - 18.6 mi

Top 29%
×9stories
+181ft-148ft

Overall

8319

Females

1521

F18-39

1521

30K→20M

18.6 - 20.0 mi

Top 32%
×5stories
+64ft-50ft

Overall

8967

Females

1974

F18-39

1974

20M→21M

20.0 - 21.0 mi

Top 49%
×8stories
+106ft-24ft

Overall

13809

Females

4515

F18-39

4515

21M→35K

21.0 - 21.8 mi

Top 38%
×7stories
+17ft-86ft

Overall

10818

Females

3001

F18-39

3001

35K→23M

21.8 - 23.0 mi

Top 46%
×5stories
+23ft-63ft

Overall

12929

Females

4223

F18-39

4223

23M→24M

23.0 - 24.0 mi

Top 49%
×6stories
+12ft-82ft

Overall

13996

Females

4815

F18-39

4815

24M→40K

24.0 - 24.9 mi

Top 33%
×1story
+6ft-20ft

Overall

9319

Females

2593

F18-39

2593

40K→25.2M

24.9 - 25.2 mi

Top 34%
×1story
+13ft-16ft

Overall

9749

Females

2875

F18-39

2875

25.2M→Finish

25.2 - 26.2 mi

Top 28%
×2stories
+22ft-21ft

Overall

7883

Females

2024

F18-39

2024

Passing Analysis

Category:
Athletes Passed
1762
Passed By
2586
Net Change
-824
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8855
5K → 10K138331-193#8855#9048
10K → 15K24991+158#9048#8890
15K → 20K32943+286#8890#8604
20K → Half6311+52#8604#8552
Half → 25K281018-990#8552#9542
25K → 30K37768+309#9542#9233
30K → 20M12568+57#9233#9176
20M → 21M36296-260#9176#9436
21M → 35K5569-14#9436#9450
35K → 23M55268-213#9450#9663
23M → 24M46224-178#9663#9841
24M → 40K8642+44#9841#9797
40K → 25.2M5138+13#9797#9784
25.2M → Finish12419+105#9784#9679
TOTALS17622586-824
📊

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