Boston Marathon logo
BOSTON MARATHON 2025

Jill Locker

Bib: 31351•F

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F40-44)
#0 / 1718
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
28:22
Rank: #22964
Start → 5K
28:22 | 9:08/mi
10K· 6.21 mi
56:00
Rank: #22481 (+483)
5K → 10K
27:38 | 8:54/mi
15K· 9.32 mi
1:24:12
Rank: #22426 (+55)
10K → 15K
28:12 | 9:05/mi
20K· 12.43 mi
1:53:02
Rank: #22343 (+83)
15K → 20K
28:50 | 9:17/mi
Half· 13.11 mi
1:59:12
Rank: #22314 (+29)
20K → Half
6:10 | 9:02/mi
25K· 15.53 mi
2:22:32
Rank: #22352 (-38)
Half → 25K
23:20 | 9:37/mi
30K· 18.64 mi
2:54:15
Rank: #22321 (+31)
25K → 30K
31:43 | 10:13/mi
20M
3:08:21
Rank: #22304 (+17)
30K → 20M
14:06 | 10:23/mi
21M
3:20:32
Rank: #22403 (-99)
20M → 21M
12:11 | 12:11/mi
35K· 21.75 mi
3:27:43
Rank: #22344 (+59)
21M → 35K
7:11 | 9:36/mi
23M
3:41:08
Rank: #22333 (+11)
35K → 23M
13:25 | 10:43/mi
24M
3:51:22
Rank: #22306 (+27)
23M → 24M
10:14 | 10:14/mi
40K· 24.85 mi
4:00:02
Rank: #22262 (+44)
24M → 40K
8:40 | 10:08/mi
25.2M
4:03:58
Rank: #22251 (+11)
40K → 25.2M
3:56 | 11:24/mi
Finish· 26.22 mi
4:12:59
Rank: #22117 (+134)
25.2M → Finish
9:01 | 8:51/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 HalfFaster
Distance13.11 mi
Time1:59:12
Pace9:06 /mi
2nd Half
Distance13.11 mi
Time2:13:47
Pace10:12 /mi
📊Positive Split: 12.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:51:4828:229:0828:22
9:08
-
10K
6.21 mi12:19:2656:009:0127:38
8:54
-0:14
15K
9.32 mi12:47:381:24:129:0228:12
9:05
+0:11
20K
12.43 mi13:16:281:53:029:0628:50
9:17
+0:12
Half
13.11 mi13:22:381:59:129:066:10
9:02
-0:15
25K
15.53 mi13:45:582:22:329:1123:20
9:37
+0:35
30K
18.64 mi14:17:412:54:159:2131:43
10:13
+0:36
20M
20.00 mi14:31:473:08:219:2514:06
10:23
+0:10
21M
21.00 mi14:43:583:20:329:3312:11
12:11
+1:48
35K
21.75 mi14:51:093:27:439:337:11
9:36
-2:35
23M
23.00 mi15:04:343:41:089:3713:25
10:43
+1:07
24M
24.00 mi15:14:483:51:229:3810:14
10:14
-0:29
40K
24.85 mi15:23:284:00:029:398:40
10:08
-0:06
25.2M
25.20 mi15:27:244:03:589:413:56
11:24
+1:16
Finish
26.22 mi15:36:254:12:599:399:01
8:51
-2:33

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

8:51 /mi

Average Pace

9:39 /mi

Slowest Pace

12:11 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:39:23

39% of race

Time at Steady Pace

59:21

23% of race

Time at Slower Pace

1:34:15

37% of race

Average Pace: 9:39 /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 mi11:51:4828:229:0828:22
9:08
#22964
10K
6.21 mi12:19:2656:009:0127:38
8:54
#22481
15K
9.32 mi12:47:381:24:129:0228:12
9:05
#22426
20K
12.43 mi13:16:281:53:029:0628:50
9:17
#22343
Half
13.11 mi13:22:381:59:129:066:10
9:02
#22314
25K
15.53 mi13:45:582:22:329:1123:20
9:37
#22352
30K
18.64 mi14:17:412:54:159:2131:43
10:13
#22321
20M
20.00 mi14:31:473:08:219:2514:06
10:23
#22304
21M
21.00 mi14:43:583:20:329:3312:11
12:11
#22403
35K
21.75 mi14:51:093:27:439:337:11
9:36
#22344
23M
23.00 mi15:04:343:41:089:3713:25
10:43
#22333
24M
24.00 mi15:14:483:51:229:3810:14
10:14
#22306
40K
24.85 mi15:23:284:00:029:398:40
10:08
#22262
25.2M
25.20 mi15:27:244:03:589:413:56
11:24
#22251
Finish
26.22 mi15:36:254:12:599:399:01
8:51
#22117
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi229649148914822364(Top 79%)8759(Top 72%)8759(Top 510%)
10K6.21 mi3.10 mi22481+4838878+2708878+27021907(Top 77%)8547(Top 70%)8547(Top 497%)
15K9.32 mi3.11 mi22426+558823+558823+5522364(Top 79%)8759(Top 72%)8759(Top 510%)
20K12.43 mi3.11 mi22343+838783+408783+4022218(Top 78%)8708(Top 71%)8708(Top 507%)
Half13.11 mi0.68 mi22314+298773+108773+1022018(Top 78%)8623(Top 71%)8623(Top 502%)
25K15.53 mi2.42 mi22352-388784-118784-1122277(Top 78%)8803(Top 72%)8803(Top 512%)
30K18.64 mi3.11 mi22321+318808-248808-2422214(Top 78%)8881(Top 73%)8881(Top 517%)
20M20.00 mi1.36 mi22304+178822-148822-1422091(Top 78%)8944(Top 73%)8944(Top 521%)
21M21.00 mi1.00 mi22403-998890-688890-6823907(Top 84%)9979(Top 82%)9979(Top 581%)
35K21.75 mi0.75 mi22344+598871+198871+1920715(Top 73%)8361(Top 68%)8361(Top 487%)
23M23.00 mi1.25 mi22333+118903-328903-3222561(Top 79%)9370(Top 77%)9370(Top 545%)
24M24.00 mi1.00 mi22306+278909-68909-622047(Top 78%)9156(Top 75%)9156(Top 533%)
40K24.85 mi0.85 mi22262+448897+128897+1220912(Top 74%)8621(Top 71%)8621(Top 502%)
25.2M25.20 mi0.35 mi22251+118896+18896+121836(Top 77%)9074(Top 74%)9074(Top 528%)
Finish26.22 mi1.02 mi22117+1348846+508846+5018322(Top 65%)7260(Top 59%)7260(Top 423%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 79%
×21stories
+97ft-345ft

Overall

22364

Females

8759

F40-44

8759

5K→10K

3.1 - 6.2 mi

Top 77%
×5stories
+79ft-138ft

Overall

21907

Females

8547

F40-44

8547

10K→15K

6.2 - 9.3 mi

Top 79%
×3stories
+67ft-78ft

Overall

22364

Females

8759

F40-44

8759

15K→20K

9.3 - 12.4 mi

Top 78%
×5stories
+106ft-86ft

Overall

22218

Females

8708

F40-44

8708

20K→Half

12.4 - 13.1 mi

Top 78%
×2stories
+19ft-37ft

Overall

22018

Females

8623

F40-44

8623

Half→25K

13.1 - 15.5 mi

Top 78%
×4stories
+66ft-88ft

Overall

22277

Females

8803

F40-44

8803

25K→30K

15.5 - 18.6 mi

Top 78%
×9stories
+181ft-148ft

Overall

22214

Females

8881

F40-44

8881

30K→20M

18.6 - 20.0 mi

Top 78%
×5stories
+64ft-50ft

Overall

22091

Females

8944

F40-44

8944

20M→21M

20.0 - 21.0 mi

Top 84%
×8stories
+106ft-24ft

Overall

23907

Females

9979

F40-44

9979

21M→35K

21.0 - 21.8 mi

Top 73%
×7stories
+17ft-86ft

Overall

20715

Females

8361

F40-44

8361

35K→23M

21.8 - 23.0 mi

Top 79%
×5stories
+23ft-63ft

Overall

22561

Females

9370

F40-44

9370

23M→24M

23.0 - 24.0 mi

Top 78%
×6stories
+12ft-82ft

Overall

22047

Females

9156

F40-44

9156

24M→40K

24.0 - 24.9 mi

Top 74%
×1story
+6ft-20ft

Overall

20912

Females

8621

F40-44

8621

40K→25.2M

24.9 - 25.2 mi

Top 77%
×1story
+13ft-16ft

Overall

21836

Females

9074

F40-44

9074

25.2M→Finish

25.2 - 26.2 mi

Top 65%
×2stories
+22ft-21ft

Overall

18322

Females

7260

F40-44

7260

Passing Analysis

Category:
Athletes Passed
1934
Passed By
1087
Net Change
+847
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22964
5K → 10K55572+483#22964#22481
10K → 15K207152+55#22481#22426
15K → 20K214131+83#22426#22343
20K → Half4819+29#22343#22314
Half → 25K131169-38#22314#22352
25K → 30K199168+31#22352#22321
30K → 20M8063+17#22321#22304
20M → 21M48147-99#22304#22403
21M → 35K7920+59#22403#22344
35K → 23M8271+11#22344#22333
23M → 24M6437+27#22333#22306
24M → 40K6824+44#22306#22262
40K → 25.2M2413+11#22262#22251
25.2M → Finish1351+134#22251#22117
TOTALS19341087+847
📊

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