Boston Marathon logo
BOSTON MARATHON 2025

Katie Cullwick

Bib: 14831•F

ON

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Top 31%
Gender (Female)
#0 / 12228
Top 13%
Division (F18-39)
#0 / 5469
Top 24%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:27
Rank: #12654
Start → 5K
23:27 | 7:33/mi
10K· 6.21 mi
47:02
Rank: #12745 (-91)
5K → 10K
23:35 | 7:35/mi
15K· 9.32 mi
1:10:13
Rank: #12273 (+472)
10K → 15K
23:11 | 7:28/mi
20K· 12.43 mi
1:33:26
Rank: #11793 (+480)
15K → 20K
23:13 | 7:28/mi
Half· 13.11 mi
1:38:28
Rank: #11729 (+64)
20K → Half
5:02 | 7:23/mi
25K· 15.53 mi
1:56:37
Rank: #11391 (+338)
Half → 25K
18:09 | 7:29/mi
30K· 18.64 mi
2:20:12
Rank: #10776 (+615)
25K → 30K
23:35 | 7:35/mi
20M
2:30:37
Rank: #10522 (+254)
30K → 20M
10:25 | 7:40/mi
21M
2:38:21
Rank: #10168 (+354)
20M → 21M
7:44 | 7:44/mi
35K· 21.75 mi
2:43:44
Rank: #9989 (+179)
21M → 35K
5:23 | 7:12/mi
23M
2:53:08
Rank: #9736 (+253)
35K → 23M
9:24 | 7:30/mi
24M
3:00:15
Rank: #9456 (+280)
23M → 24M
7:07 | 7:07/mi
40K· 24.85 mi
3:06:17
Rank: #9194 (+262)
24M → 40K
6:02 | 7:03/mi
25.2M
3:08:53
Rank: #9062 (+132)
40K → 25.2M
2:36 | 7:32/mi
Finish· 26.22 mi
3:15:29
Rank: #8705 (+357)
25.2M → Finish
6:36 | 6:29/mi

The Course

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 Half
Distance13.11 mi
Time1:38:28
Pace7:31 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:37:01
Pace7:24 /mi
📊Negative Split: 1.5% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:55:0423:277:3323:27
7:33
-
10K
6.21 mi11:18:3947:027:3423:35
7:35
+0:02
15K
9.32 mi11:41:501:10:137:3223:11
7:28
-0:07
20K
12.43 mi12:05:031:33:267:3123:13
7:28
0:00
Half
13.11 mi12:10:051:38:287:315:02
7:23
-0:05
25K
15.53 mi12:28:141:56:377:3018:09
7:29
+0:06
30K
18.64 mi12:51:492:20:127:3123:35
7:35
+0:06
20M
20.00 mi13:02:142:30:377:3210:25
7:40
+0:05
21M
21.00 mi13:09:582:38:217:327:44
7:44
+0:04
35K
21.75 mi13:15:212:43:447:325:23
7:12
-0:32
23M
23.00 mi13:24:452:53:087:329:24
7:30
+0:18
24M
24.00 mi13:31:523:00:157:317:07
7:07
-0:23
40K
24.85 mi13:37:543:06:177:306:02
7:03
-0:04
25.2M
25.20 mi13:40:303:08:537:302:36
7:32
+0:29
Finish
26.22 mi13:47:063:15:297:286:36
6:29
-1:03

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

6:29 /mi

Average Pace

7:28 /mi

Slowest Pace

7:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

19:45

10% of race

Time at Steady Pace

2:37:35

81% of race

Time at Slower Pace

18:09

9% of race

Average Pace: 7:27 /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 mi10:55:0423:277:3323:27
7:33
#12654
10K
6.21 mi11:18:3947:027:3423:35
7:35
#12745
15K
9.32 mi11:41:501:10:137:3223:11
7:28
#12273
20K
12.43 mi12:05:031:33:267:3123:13
7:28
#11793
Half
13.11 mi12:10:051:38:287:315:02
7:23
#11729
25K
15.53 mi12:28:141:56:377:3018:09
7:29
#11391
30K
18.64 mi12:51:492:20:127:3123:35
7:35
#10776
20M
20.00 mi13:02:142:30:377:3210:25
7:40
#10522
21M
21.00 mi13:09:582:38:217:327:44
7:44
#10168
35K
21.75 mi13:15:212:43:447:325:23
7:12
#9989
23M
23.00 mi13:24:452:53:087:329:24
7:30
#9736
24M
24.00 mi13:31:523:00:157:317:07
7:07
#9456
40K
24.85 mi13:37:543:06:177:306:02
7:03
#9194
25.2M
25.20 mi13:40:303:08:537:302:36
7:32
#9062
Finish
26.22 mi13:47:063:15:297:286:36
6:29
#8705
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi126543134313411440(Top 40%)2594(Top 21%)2594(Top 47%)
10K6.21 mi3.10 mi12745-913200-663200-6612934(Top 46%)3326(Top 27%)3326(Top 61%)
15K9.32 mi3.11 mi12273+4722983+2172983+21711440(Top 40%)2594(Top 21%)2594(Top 47%)
20K12.43 mi3.11 mi11793+4802758+2252758+22510526(Top 37%)2221(Top 18%)2221(Top 41%)
Half13.11 mi0.68 mi11729+642728+302728+3010692(Top 38%)2257(Top 18%)2257(Top 41%)
25K15.53 mi2.42 mi11391+3382588+1402588+1409850(Top 35%)2036(Top 17%)2036(Top 37%)
30K18.64 mi3.11 mi10776+6152347+2412347+2418391(Top 30%)1550(Top 13%)1550(Top 28%)
20M20.00 mi1.36 mi10522+2542264+832264+838152(Top 29%)1598(Top 13%)1598(Top 29%)
21M21.00 mi1.00 mi10168+3542121+1432121+1435863(Top 21%)881(Top 7%)881(Top 16%)
35K21.75 mi0.75 mi9989+1792062+592062+596632(Top 23%)1156(Top 9%)1156(Top 21%)
23M23.00 mi1.25 mi9736+2531973+891973+896693(Top 24%)1268(Top 10%)1268(Top 23%)
24M24.00 mi1.00 mi9456+2801875+981875+985346(Top 19%)847(Top 7%)847(Top 15%)
40K24.85 mi0.85 mi9194+2621792+831792+834270(Top 15%)585(Top 5%)585(Top 11%)
25.2M25.20 mi0.35 mi9062+1321749+431749+433693(Top 13%)495(Top 4%)495(Top 9%)
Finish26.22 mi1.02 mi8705+3571632+1171632+1172751(Top 10%)281(Top 2%)281(Top 5%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 40%
×21stories
+97ft-345ft

Overall

11440

Females

2594

F18-39

2594

5K→10K

3.1 - 6.2 mi

Top 46%
×5stories
+79ft-138ft

Overall

12934

Females

3326

F18-39

3326

10K→15K

6.2 - 9.3 mi

Top 40%
×3stories
+67ft-78ft

Overall

11440

Females

2594

F18-39

2594

15K→20K

9.3 - 12.4 mi

Top 37%
×5stories
+106ft-86ft

Overall

10526

Females

2221

F18-39

2221

20K→Half

12.4 - 13.1 mi

Top 38%
×2stories
+19ft-37ft

Overall

10692

Females

2257

F18-39

2257

Half→25K

13.1 - 15.5 mi

Top 35%
×4stories
+66ft-88ft

Overall

9850

Females

2036

F18-39

2036

25K→30K

15.5 - 18.6 mi

Top 30%
×9stories
+181ft-148ft

Overall

8391

Females

1550

F18-39

1550

30K→20M

18.6 - 20.0 mi

Top 29%
×5stories
+64ft-50ft

Overall

8152

Females

1598

F18-39

1598

20M→21M

20.0 - 21.0 mi

Top 21%
×8stories
+106ft-24ft

Overall

5863

Females

881

F18-39

881

21M→35K

21.0 - 21.8 mi

Top 23%
×7stories
+17ft-86ft

Overall

6632

Females

1156

F18-39

1156

35K→23M

21.8 - 23.0 mi

Top 24%
×5stories
+23ft-63ft

Overall

6693

Females

1268

F18-39

1268

23M→24M

23.0 - 24.0 mi

Top 19%
×6stories
+12ft-82ft

Overall

5346

Females

847

F18-39

847

24M→40K

24.0 - 24.9 mi

Top 15%
×1story
+6ft-20ft

Overall

4270

Females

585

F18-39

585

40K→25.2M

24.9 - 25.2 mi

Top 13%
×1story
+13ft-16ft

Overall

3693

Females

495

F18-39

495

25.2M→Finish

25.2 - 26.2 mi

Top 10%
×2stories
+22ft-21ft

Overall

2751

Females

281

F18-39

281

Passing Analysis

Category:
Athletes Passed
4410*
Passed By
461
Net Change
+3949
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12654
5K → 10K242333-91#12654#12745
10K → 15K51442+472#12745#12273
15K → 20K50121+480#12273#11793
20K → Half706+64#11793#11729
Half → 25K35618+338#11729#11391
25K → 30K63015+615#11391#10776
30K → 20M26612+254#10776#10522
20M → 21M3562+354#10522#10168
21M → 35K179*0+179#10168#9989
35K → 23M2596+253#9989#9736
23M → 24M2833+280#9736#9456
24M → 40K2642+262#9456#9194
40K → 25.2M1331+132#9194#9062
25.2M → Finish3570+357#9062#8705
TOTALS4410*461+3949

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

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