Boston Marathon logo
BOSTON MARATHON 2025

Lisa Clark

Bib: 18693•F

AB

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Top 27%
Gender (Female)
#0 / 12228
Top 10%
Masters (Masters Women)
#0 / 6759
Top 3%
Division (F45-49)
#0 / 1813
Top 3%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:15
Rank: #14862
Start → 5K
24:15 | 7:48/mi
10K· 6.21 mi
47:24
Rank: #13295 (+1567)
5K → 10K
23:09 | 7:27/mi
15K· 9.32 mi
1:09:56
Rank: #12013 (+1282)
10K → 15K
22:32 | 7:15/mi
20K· 12.43 mi
1:32:21
Rank: #11027 (+986)
15K → 20K
22:25 | 7:13/mi
Half· 13.11 mi
1:37:12
Rank: #10873 (+154)
20K → Half
4:51 | 7:07/mi
25K· 15.53 mi
1:54:36
Rank: #10251 (+622)
Half → 25K
17:24 | 7:11/mi
30K· 18.64 mi
2:17:37
Rank: #9546 (+705)
25K → 30K
23:01 | 7:25/mi
20M
2:27:38
Rank: #9250 (+296)
30K → 20M
10:01 | 7:22/mi
21M
2:35:20
Rank: #8964 (+286)
20M → 21M
7:42 | 7:42/mi
35K· 21.75 mi
2:40:38
Rank: #8796 (+168)
21M → 35K
5:18 | 7:05/mi
23M
2:49:37
Rank: #8416 (+380)
35K → 23M
8:59 | 7:10/mi
24M
2:56:34
Rank: #8160 (+256)
23M → 24M
6:57 | 6:57/mi
40K· 24.85 mi
3:02:35
Rank: #7946 (+214)
24M → 40K
6:01 | 7:02/mi
25.2M
3:05:12
Rank: #7834 (+112)
40K → 25.2M
2:37 | 7:35/mi
Finish· 26.22 mi
3:11:59
Rank: #7607 (+227)
25.2M → Finish
6:47 | 6:39/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
Time1:37:12
Pace7:25 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:34:47
Pace7:14 /mi
📊Negative Split: 2.5% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:1224:157:4824:15
7:48
-
10K
6.21 mi11:38:2147:247:3823:09
7:27
-0:21
15K
9.32 mi12:00:531:09:567:3022:32
7:15
-0:12
20K
12.43 mi12:23:181:32:217:2622:25
7:13
-0:02
Half
13.11 mi12:28:091:37:127:254:51
7:07
-0:06
25K
15.53 mi12:45:331:54:367:2317:24
7:11
+0:04
30K
18.64 mi13:08:342:17:377:2323:01
7:25
+0:14
20M
20.00 mi13:18:352:27:387:2310:01
7:22
-0:03
21M
21.00 mi13:26:172:35:207:247:42
7:42
+0:20
35K
21.75 mi13:31:352:40:387:235:18
7:05
-0:37
23M
23.00 mi13:40:342:49:377:228:59
7:10
+0:05
24M
24.00 mi13:47:312:56:347:216:57
6:57
-0:13
40K
24.85 mi13:53:323:02:357:216:01
7:02
+0:05
25.2M
25.20 mi13:56:093:05:127:212:37
7:35
+0:33
Finish
26.22 mi14:02:563:11:597:206:47
6:39
-0:56

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

6:39 /mi

Average Pace

7:20 /mi

Slowest Pace

7:48 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:41:14

53% of race

Time at Steady Pace

1:30:45

47% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:19 /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 mi11:15:1224:157:4824:15
7:48
#14862
10K
6.21 mi11:38:2147:247:3823:09
7:27
#13295
15K
9.32 mi12:00:531:09:567:3022:32
7:15
#12013
20K
12.43 mi12:23:181:32:217:2622:25
7:13
#11027
Half
13.11 mi12:28:091:37:127:254:51
7:07
#10873
25K
15.53 mi12:45:331:54:367:2317:24
7:11
#10251
30K
18.64 mi13:08:342:17:377:2323:01
7:25
#9546
20M
20.00 mi13:18:352:27:387:2310:01
7:22
#9250
21M
21.00 mi13:26:172:35:207:247:42
7:42
#8964
35K
21.75 mi13:31:352:40:387:235:18
7:05
#8796
23M
23.00 mi13:40:342:49:377:228:59
7:10
#8416
24M
24.00 mi13:47:312:56:347:216:57
6:57
#8160
40K
24.85 mi13:53:323:02:357:216:01
7:02
#7946
25.2M
25.20 mi13:56:093:05:127:212:37
7:35
#7834
Finish
26.22 mi14:02:563:11:597:206:47
6:39
#7607
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi14862443444349587(Top 34%)1691(Top 14%)1691(Top 93%)
10K6.21 mi3.10 mi13295+15673522+9123522+91211647(Top 41%)2634(Top 22%)2634(Top 145%)
15K9.32 mi3.11 mi12013+12822846+6762846+6769587(Top 34%)1691(Top 14%)1691(Top 93%)
20K12.43 mi3.11 mi11027+9862352+4942352+4948340(Top 29%)1246(Top 10%)1246(Top 69%)
Half13.11 mi0.68 mi10873+1542278+742278+748407(Top 30%)1245(Top 10%)1245(Top 69%)
25K15.53 mi2.42 mi10251+6222027+2512027+2517448(Top 26%)1020(Top 8%)1020(Top 56%)
30K18.64 mi3.11 mi9546+7051750+2771750+2777109(Top 25%)1056(Top 9%)1056(Top 58%)
20M20.00 mi1.36 mi9250+2961647+1031647+1036237(Top 22%)873(Top 7%)873(Top 48%)
21M21.00 mi1.00 mi8964+2861560+871560+875673(Top 20%)815(Top 7%)815(Top 45%)
35K21.75 mi0.75 mi8796+1681506+541506+545949(Top 21%)917(Top 7%)917(Top 51%)
23M23.00 mi1.25 mi8416+3801398+1081398+1084761(Top 17%)610(Top 5%)610(Top 34%)
24M24.00 mi1.00 mi8160+2561339+591339+594401(Top 15%)560(Top 5%)560(Top 31%)
40K24.85 mi0.85 mi7946+2141288+511288+514164(Top 15%)543(Top 4%)543(Top 30%)
25.2M25.20 mi0.35 mi7834+1121259+291259+293917(Top 14%)551(Top 5%)551(Top 30%)
Finish26.22 mi1.02 mi7607+2271212+471212+473679(Top 13%)477(Top 4%)477(Top 26%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 34%
×21stories
+97ft-345ft

Overall

9587

Females

1691

F45-49

1691

5K→10K

3.1 - 6.2 mi

Top 41%
×5stories
+79ft-138ft

Overall

11647

Females

2634

F45-49

2634

10K→15K

6.2 - 9.3 mi

Top 34%
×3stories
+67ft-78ft

Overall

9587

Females

1691

F45-49

1691

15K→20K

9.3 - 12.4 mi

Top 29%
×5stories
+106ft-86ft

Overall

8340

Females

1246

F45-49

1246

20K→Half

12.4 - 13.1 mi

Top 30%
×2stories
+19ft-37ft

Overall

8407

Females

1245

F45-49

1245

Half→25K

13.1 - 15.5 mi

Top 26%
×4stories
+66ft-88ft

Overall

7448

Females

1020

F45-49

1020

25K→30K

15.5 - 18.6 mi

Top 25%
×9stories
+181ft-148ft

Overall

7109

Females

1056

F45-49

1056

30K→20M

18.6 - 20.0 mi

Top 22%
×5stories
+64ft-50ft

Overall

6237

Females

873

F45-49

873

20M→21M

20.0 - 21.0 mi

Top 20%
×8stories
+106ft-24ft

Overall

5673

Females

815

F45-49

815

21M→35K

21.0 - 21.8 mi

Top 21%
×7stories
+17ft-86ft

Overall

5949

Females

917

F45-49

917

35K→23M

21.8 - 23.0 mi

Top 17%
×5stories
+23ft-63ft

Overall

4761

Females

610

F45-49

610

23M→24M

23.0 - 24.0 mi

Top 15%
×6stories
+12ft-82ft

Overall

4401

Females

560

F45-49

560

24M→40K

24.0 - 24.9 mi

Top 15%
×1story
+6ft-20ft

Overall

4164

Females

543

F45-49

543

40K→25.2M

24.9 - 25.2 mi

Top 14%
×1story
+13ft-16ft

Overall

3917

Females

551

F45-49

551

25.2M→Finish

25.2 - 26.2 mi

Top 13%
×2stories
+22ft-21ft

Overall

3679

Females

477

F45-49

477

Passing Analysis

Category:
Athletes Passed
7289*
Passed By
34
Net Change
+7255
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14862
5K → 10K157811+1567#14862#13295
10K → 15K12853+1282#13295#12013
15K → 20K9871+986#12013#11027
20K → Half1551+154#11027#10873
Half → 25K6242+622#10873#10251
25K → 30K710*5+705#10251#9546
30K → 20M2982+296#9546#9250
20M → 21M2871+286#9250#8964
21M → 35K1713+168#8964#8796
35K → 23M3800+380#8796#8416
23M → 24M2571+256#8416#8160
24M → 40K2162+214#8160#7946
40K → 25.2M1131+112#7946#7834
25.2M → Finish2281+227#7834#7607
TOTALS7289*34+7255

* 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