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BOSTON MARATHON 2025

Jennifer Fox

Bib: 17097•F

CA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 37%
Gender (Female)
#0 / 12228
Top 21%
Division (F18-39)
#0 / 5469
Top 36%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:34
Rank: #4791
Start → 5K
20:34 | 6:37/mi
10K· 6.21 mi
42:33
Rank: #6749 (-1958)
5K → 10K
21:59 | 7:05/mi
15K· 9.32 mi
1:05:29
Rank: #7951 (-1202)
10K → 15K
22:56 | 7:23/mi
20K· 12.43 mi
1:29:24
Rank: #8928 (-977)
15K → 20K
23:55 | 7:42/mi
Half· 13.11 mi
1:34:32
Rank: #9097 (-169)
20K → Half
5:08 | 7:31/mi
25K· 15.53 mi
1:53:44
Rank: #9749 (-652)
Half → 25K
19:12 | 7:55/mi
30K· 18.64 mi
2:19:34
Rank: #10471 (-722)
25K → 30K
25:50 | 8:19/mi
20M
2:30:48
Rank: #10605 (-134)
30K → 20M
11:14 | 8:16/mi
21M
2:39:31
Rank: #10647 (-42)
20M → 21M
8:43 | 8:43/mi
35K· 21.75 mi
2:45:24
Rank: #10655 (-8)
21M → 35K
5:53 | 7:52/mi
23M
2:55:54
Rank: #10724 (-69)
35K → 23M
10:30 | 8:23/mi
24M
3:04:08
Rank: #10790 (-66)
23M → 24M
8:14 | 8:14/mi
40K· 24.85 mi
3:11:09
Rank: #10801 (-11)
24M → 40K
7:01 | 8:12/mi
25.2M
3:14:00
Rank: #10722 (+79)
40K → 25.2M
2:51 | 8:16/mi
Finish· 26.22 mi
3:21:39
Rank: #10630 (+92)
25.2M → Finish
7:39 | 7:30/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:34:32
Pace7:13 /mi
2nd Half
Distance13.11 mi
Time1:47:07
Pace8:10 /mi
📊Positive Split: 13.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:10:4220:346:3720:34
6:37
-
10K
6.21 mi11:32:4142:336:5121:59
7:05
+0:28
15K
9.32 mi11:55:371:05:297:0222:56
7:23
+0:18
20K
12.43 mi12:19:321:29:247:1223:55
7:42
+0:19
Half
13.11 mi12:24:401:34:327:135:08
7:31
-0:11
25K
15.53 mi12:43:521:53:447:1919:12
7:55
+0:24
30K
18.64 mi13:09:422:19:347:2925:50
8:19
+0:24
20M
20.00 mi13:20:562:30:487:3211:14
8:16
-0:03
21M
21.00 mi13:29:392:39:317:368:43
8:43
+0:27
35K
21.75 mi13:35:322:45:247:365:53
7:52
-0:51
23M
23.00 mi13:46:022:55:547:3910:30
8:23
+0:31
24M
24.00 mi13:54:163:04:087:408:14
8:14
-0:09
40K
24.85 mi14:01:173:11:097:417:01
8:12
-0:02
25.2M
25.20 mi14:04:083:14:007:422:51
8:16
+0:04
Finish
26.22 mi14:11:473:21:397:427:39
7:30
-0:46

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

6:37 /mi

Average Pace

7:42 /mi

Slowest Pace

8:43 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:18:16

39% of race

Time at Steady Pace

49:00

24% of race

Time at Slower Pace

1:14:23

37% of race

Average Pace: 7:41 /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 mi11:10:4220:346:3720:34
6:37
#4791
10K
6.21 mi11:32:4142:336:5121:59
7:05
#6749
15K
9.32 mi11:55:371:05:297:0222:56
7:23
#7951
20K
12.43 mi12:19:321:29:247:1223:55
7:42
#8928
Half
13.11 mi12:24:401:34:327:135:08
7:31
#9097
25K
15.53 mi12:43:521:53:447:1919:12
7:55
#9749
30K
18.64 mi13:09:422:19:347:2925:50
8:19
#10471
20M
20.00 mi13:20:562:30:487:3211:14
8:16
#10605
21M
21.00 mi13:29:392:39:317:368:43
8:43
#10647
35K
21.75 mi13:35:322:45:247:365:53
7:52
#10655
23M
23.00 mi13:46:022:55:547:3910:30
8:23
#10724
24M
24.00 mi13:54:163:04:087:408:14
8:14
#10790
40K
24.85 mi14:01:173:11:097:417:01
8:12
#10801
25.2M
25.20 mi14:04:083:14:007:422:51
8:16
#10722
Finish
26.22 mi14:11:473:21:397:427:39
7:30
#10630
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi479129829810712(Top 38%)2227(Top 18%)2227(Top 41%)
10K6.21 mi3.10 mi6749-1958639-341639-3418488(Top 30%)1181(Top 10%)1181(Top 22%)
15K9.32 mi3.11 mi7951-1202983-344983-34410712(Top 38%)2227(Top 18%)2227(Top 41%)
20K12.43 mi3.11 mi8928-9771388-4051388-40512395(Top 44%)3216(Top 26%)3216(Top 59%)
Half13.11 mi0.68 mi9097-1691458-701458-7011942(Top 42%)2892(Top 24%)2892(Top 53%)
25K15.53 mi2.42 mi9749-6521792-3341792-33413246(Top 47%)3789(Top 31%)3789(Top 69%)
30K18.64 mi3.11 mi10471-7222190-3982190-39813597(Top 48%)4142(Top 34%)4142(Top 76%)
20M20.00 mi1.36 mi10605-1342308-1182308-11812273(Top 43%)3573(Top 29%)3573(Top 65%)
21M21.00 mi1.00 mi10647-422368-602368-6011802(Top 42%)3487(Top 29%)3487(Top 64%)
35K21.75 mi0.75 mi10655-82388-202388-2011313(Top 40%)3265(Top 27%)3265(Top 60%)
23M23.00 mi1.25 mi10724-692474-862474-8612590(Top 44%)4039(Top 33%)4039(Top 74%)
24M24.00 mi1.00 mi10790-662547-732547-7312806(Top 45%)4206(Top 34%)4206(Top 77%)
40K24.85 mi0.85 mi10801-112587-402587-4011605(Top 41%)3697(Top 30%)3697(Top 68%)
25.2M25.20 mi0.35 mi10722+792547+402547+407539(Top 27%)1879(Top 15%)1879(Top 34%)
Finish26.22 mi1.02 mi10630+922537+102537+109263(Top 33%)2650(Top 22%)2650(Top 48%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 38%
×21stories
+97ft-345ft

Overall

10712

Females

2227

F18-39

2227

5K→10K

3.1 - 6.2 mi

Top 30%
×5stories
+79ft-138ft

Overall

8488

Females

1181

F18-39

1181

10K→15K

6.2 - 9.3 mi

Top 38%
×3stories
+67ft-78ft

Overall

10712

Females

2227

F18-39

2227

15K→20K

9.3 - 12.4 mi

Top 44%
×5stories
+106ft-86ft

Overall

12395

Females

3216

F18-39

3216

20K→Half

12.4 - 13.1 mi

Top 42%
×2stories
+19ft-37ft

Overall

11942

Females

2892

F18-39

2892

Half→25K

13.1 - 15.5 mi

Top 47%
×4stories
+66ft-88ft

Overall

13246

Females

3789

F18-39

3789

25K→30K

15.5 - 18.6 mi

Top 48%
×9stories
+181ft-148ft

Overall

13597

Females

4142

F18-39

4142

30K→20M

18.6 - 20.0 mi

Top 43%
×5stories
+64ft-50ft

Overall

12273

Females

3573

F18-39

3573

20M→21M

20.0 - 21.0 mi

Top 42%
×8stories
+106ft-24ft

Overall

11802

Females

3487

F18-39

3487

21M→35K

21.0 - 21.8 mi

Top 40%
×7stories
+17ft-86ft

Overall

11313

Females

3265

F18-39

3265

35K→23M

21.8 - 23.0 mi

Top 44%
×5stories
+23ft-63ft

Overall

12590

Females

4039

F18-39

4039

23M→24M

23.0 - 24.0 mi

Top 45%
×6stories
+12ft-82ft

Overall

12806

Females

4206

F18-39

4206

24M→40K

24.0 - 24.9 mi

Top 41%
×1story
+6ft-20ft

Overall

11605

Females

3697

F18-39

3697

40K→25.2M

24.9 - 25.2 mi

Top 27%
×1story
+13ft-16ft

Overall

7539

Females

1879

F18-39

1879

25.2M→Finish

25.2 - 26.2 mi

Top 33%
×2stories
+22ft-21ft

Overall

9263

Females

2650

F18-39

2650

Passing Analysis

Category:
Athletes Passed
831
Passed By
6668
Net Change
-5839
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4791
5K → 10K61964-1958#4791#6749
10K → 15K121214-1202#6749#7951
15K → 20K261003-977#7951#8928
20K → Half5174-169#8928#9097
Half → 25K47699-652#9097#9749
25K → 30K82802-722#9749#10471
30K → 20M82216-134#10471#10605
20M → 21M95137-42#10605#10647
21M → 35K5159-8#10647#10655
35K → 23M93162-69#10655#10724
23M → 24M55121-66#10724#10790
24M → 40K6576-11#10790#10801
40K → 25.2M834+79#10801#10722
25.2M → Finish12937+92#10722#10630
TOTALS8316668-5839
📊

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