Boston Marathon logo
BOSTON MARATHON 2025

Jillian Manfredi

Bib: 9752•F

IL

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Top 18%
Gender (Female)
#0 / 12228
Top 4%
Division (F18-39)
#0 / 5469
Top 7%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K· 3.11 mi
21:36
Rank: #7453
Start → 5K
21:36 | 6:57/mi
10K· 6.21 mi
42:28
Rank: #6621 (+832)
5K → 10K
20:52 | 6:43/mi
15K· 9.32 mi
1:03:08
Rank: #5943 (+678)
10K → 15K
20:40 | 6:39/mi
20K· 12.43 mi
1:23:46
Rank: #5389 (+554)
15K → 20K
20:38 | 6:38/mi
Half· 13.11 mi
1:28:16
Rank: #5312 (+77)
20K → Half
4:30 | 6:36/mi
25K· 15.53 mi
1:44:20
Rank: #4947 (+365)
Half → 25K
16:04 | 6:38/mi
30K· 18.64 mi
2:05:26
Rank: #4566 (+381)
25K → 30K
21:06 | 6:47/mi
20M
2:15:10
Rank: #4586 (-20)
30K → 20M
9:44 | 7:10/mi
21M
2:23:05
Rank: #4719 (-133)
20M → 21M
7:55 | 7:55/mi
35K· 21.75 mi
2:28:27
Rank: #4770 (-51)
21M → 35K
5:22 | 7:10/mi
23M
2:38:04
Rank: #4984 (-214)
35K → 23M
9:37 | 7:41/mi
24M
2:45:50
Rank: #5175 (-191)
23M → 24M
7:46 | 7:46/mi
40K· 24.85 mi
2:52:03
Rank: #5152 (+23)
24M → 40K
6:13 | 7:16/mi
25.2M
2:54:49
Rank: #5140 (+12)
40K → 25.2M
2:46 | 8:01/mi
Finish· 26.22 mi
3:01:38
Rank: #5044 (+96)
25.2M → Finish
6:49 | 6:41/mi

Course Map & Elevation

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
Time1:28:16
Pace6:44 /mi
2nd Half
Distance13.11 mi
Time1:33:22
Pace7:07 /mi
📊Positive Split: 5.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:3121:366:5721:36
6:57
-
10K
6.21 mi11:08:2342:286:5020:52
6:43
-0:14
15K
9.32 mi11:29:031:03:086:4620:40
6:39
-0:04
20K
12.43 mi11:49:411:23:466:4420:38
6:38
-0:01
Half
13.11 mi11:54:111:28:166:444:30
6:36
-0:02
25K
15.53 mi12:10:151:44:206:4316:04
6:38
+0:02
30K
18.64 mi12:31:212:05:266:4421:06
6:47
+0:09
20M
20.00 mi12:41:052:15:106:459:44
7:10
+0:23
21M
21.00 mi12:49:002:23:056:497:55
7:55
+0:45
35K
21.75 mi12:54:222:28:276:505:22
7:10
-0:45
23M
23.00 mi13:03:592:38:046:529:37
7:41
+0:31
24M
24.00 mi13:11:452:45:506:557:46
7:46
+0:05
40K
24.85 mi13:17:582:52:036:556:13
7:16
-0:30
25.2M
25.20 mi13:20:442:54:496:562:46
8:01
+0:45
Finish
26.22 mi13:27:333:01:386:566:49
6:41
-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

6:36 /mi

Average Pace

6:56 /mi

Slowest Pace

8:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

1:08:41

38% of race

Time at Steady Pace

1:18:40

43% of race

Time at Slower Pace

34:17

19% of race

Average Pace: 6:56 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:47:3121:366:5721:36
6:57
#7453
10K
6.21 mi11:08:2342:286:5020:52
6:43
#6621
15K
9.32 mi11:29:031:03:086:4620:40
6:39
#5943
20K
12.43 mi11:49:411:23:466:4420:38
6:38
#5389
Half
13.11 mi11:54:111:28:166:444:30
6:36
#5312
25K
15.53 mi12:10:151:44:206:4316:04
6:38
#4947
30K
18.64 mi12:31:212:05:266:4421:06
6:47
#4566
20M
20.00 mi12:41:052:15:106:459:44
7:10
#4586
21M
21.00 mi12:49:002:23:056:497:55
7:55
#4719
35K
21.75 mi12:54:222:28:276:505:22
7:10
#4770
23M
23.00 mi13:03:592:38:046:529:37
7:41
#4984
24M
24.00 mi13:11:452:45:506:557:46
7:46
#5175
40K
24.85 mi13:17:582:52:036:556:13
7:16
#5152
25.2M
25.20 mi13:20:442:54:496:562:46
8:01
#5140
Finish
26.22 mi13:27:333:01:386:566:49
6:41
#5044
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi74538038034691(Top 17%)297(Top 2%)297(Top 5%)
10K6.21 mi3.10 mi6621+832602+201602+2015507(Top 19%)422(Top 3%)422(Top 8%)
15K9.32 mi3.11 mi5943+678482+120482+1204691(Top 17%)297(Top 2%)297(Top 5%)
20K12.43 mi3.11 mi5389+554397+85397+853972(Top 14%)228(Top 2%)228(Top 4%)
Half13.11 mi0.68 mi5312+77386+11386+114469(Top 16%)288(Top 2%)288(Top 5%)
25K15.53 mi2.42 mi4947+365343+43343+433654(Top 13%)210(Top 2%)210(Top 4%)
30K18.64 mi3.11 mi4566+381303+40303+403406(Top 12%)223(Top 2%)223(Top 4%)
20M20.00 mi1.36 mi4586-20321-18321-185016(Top 18%)505(Top 4%)505(Top 9%)
21M21.00 mi1.00 mi4719-133341-20341-206893(Top 24%)1251(Top 10%)1251(Top 23%)
35K21.75 mi0.75 mi4770-51361-20361-206461(Top 23%)1077(Top 9%)1077(Top 20%)
23M23.00 mi1.25 mi4984-214403-42403-427787(Top 27%)1724(Top 14%)1724(Top 32%)
24M24.00 mi1.00 mi5175-191446-43446-439577(Top 34%)2583(Top 21%)2583(Top 47%)
40K24.85 mi0.85 mi5152+23454-8454-85502(Top 19%)928(Top 8%)928(Top 17%)
25.2M25.20 mi0.35 mi5140+12456-2456-26102(Top 21%)1260(Top 10%)1260(Top 23%)
Finish26.22 mi1.02 mi5044+96447+9447+93835(Top 14%)506(Top 4%)506(Top 9%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 17%
×21stories
+97ft-345ft

Overall

4691

Females

297

F18-39

297

5K→10K

3.1 - 6.2 mi

Top 19%
×5stories
+79ft-138ft

Overall

5507

Females

422

F18-39

422

10K→15K

6.2 - 9.3 mi

Top 17%
×3stories
+67ft-78ft

Overall

4691

Females

297

F18-39

297

15K→20K

9.3 - 12.4 mi

Top 14%
×5stories
+106ft-86ft

Overall

3972

Females

228

F18-39

228

20K→Half

12.4 - 13.1 mi

Top 16%
×2stories
+19ft-37ft

Overall

4469

Females

288

F18-39

288

Half→25K

13.1 - 15.5 mi

Top 13%
×4stories
+66ft-88ft

Overall

3654

Females

210

F18-39

210

25K→30K

15.5 - 18.6 mi

Top 12%
×9stories
+181ft-148ft

Overall

3406

Females

223

F18-39

223

30K→20M

18.6 - 20.0 mi

Top 18%
×5stories
+64ft-50ft

Overall

5016

Females

505

F18-39

505

20M→21M

20.0 - 21.0 mi

Top 24%
×8stories
+106ft-24ft

Overall

6893

Females

1251

F18-39

1251

21M→35K

21.0 - 21.8 mi

Top 23%
×7stories
+17ft-86ft

Overall

6461

Females

1077

F18-39

1077

35K→23M

21.8 - 23.0 mi

Top 27%
×5stories
+23ft-63ft

Overall

7787

Females

1724

F18-39

1724

23M→24M

23.0 - 24.0 mi

Top 34%
×6stories
+12ft-82ft

Overall

9577

Females

2583

F18-39

2583

24M→40K

24.0 - 24.9 mi

Top 19%
×1story
+6ft-20ft

Overall

5502

Females

928

F18-39

928

40K→25.2M

24.9 - 25.2 mi

Top 21%
×1story
+13ft-16ft

Overall

6102

Females

1260

F18-39

1260

25.2M→Finish

25.2 - 26.2 mi

Top 14%
×2stories
+22ft-21ft

Overall

3835

Females

506

F18-39

506

Passing Analysis

Category:
Athletes Passed
3306
Passed By
897
Net Change
+2409
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7453
5K → 10K8408+832#7453#6621
10K → 15K6835+678#6621#5943
15K → 20K5573+554#5943#5389
20K → Half814+77#5389#5312
Half → 25K3672+365#5312#4947
25K → 30K39817+381#4947#4566
30K → 20M6383-20#4566#4586
20M → 21M38171-133#4586#4719
21M → 35K3687-51#4719#4770
35K → 23M38252-214#4770#4984
23M → 24M19210-191#4984#5175
24M → 40K6037+23#5175#5152
40K → 25.2M2210+12#5152#5140
25.2M → Finish1048+96#5140#5044
TOTALS3306897+2409
📊

Passing Visuals

Category:

📈Position Graph

Loading...

🎨Heatmap Timeline

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