Boston Marathon logo
BOSTON MARATHON 2025

Kelli Heath

Bib: 20461•F

GA

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

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
8:52/mi
27:34
↑ 97↓ 3451.5%
10K· 6.21 mi
8:47/mi
54:52
↑ 79↓ 1380.4%
15K· 9.32 mi
8:53/mi
1:22:28
↑ 67↓ 78
20K· 12.43 mi
8:59/mi
1:50:22
↑ 106↓ 860.1%
Half· 13.11 mi
9:08/mi
1:56:36
↑ 19↓ 370.5%
25K· 15.53 mi
9:11/mi
2:18:52
↑ 66↓ 880.2%
30K· 18.64 mi
9:33/mi
2:48:31
↑ 181↓ 1480.2%
20M
10:27/mi
3:02:43
↑ 64↓ 500.2%
21M
10:15/mi
3:12:58
↑ 106↓ 241.6%
35K· 21.75 mi
9:35/mi
3:20:08
↑ 17↓ 861.7%
23M
10:01/mi
3:32:41
↑ 23↓ 630.6%
24M
9:33/mi
3:42:14
↓ 821.3%
40K· 24.85 mi
9:46/mi
3:50:35
↓ 200.3%
25.2M
11:10/mi
3:54:26
↑ 13↓ 160.2%
Finish· 26.22 mi
9:32/mi
4:04:09
↑ 22↓ 21

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
Time1:56:36
Pace8:54 /mi
2nd Half
Distance13.11 mi
Time2:07:33
Pace9:44 /mi
📊Positive Split: 9.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:25:2627:348:5227:34
8:52
-
10K
6.21 mi11:52:4454:528:5027:18
8:47
-0:05
15K
9.32 mi12:20:201:22:288:5127:36
8:53
+0:06
20K
12.43 mi12:48:141:50:228:5327:54
8:59
+0:06
Half
13.11 mi12:54:281:56:368:546:14
9:08
+0:09
25K
15.53 mi13:16:442:18:528:5622:16
9:11
+0:03
30K
18.64 mi13:46:232:48:319:0229:39
9:33
+0:22
20M
20.00 mi14:00:353:02:439:0814:12
10:27
+0:54
21M
21.00 mi14:10:503:12:589:1110:15
10:15
-0:12
35K
21.75 mi14:18:003:20:089:127:10
9:35
-0:40
23M
23.00 mi14:30:333:32:419:1512:33
10:01
+0:26
24M
24.00 mi14:40:063:42:149:169:33
9:33
-0:28
40K
24.85 mi14:48:273:50:359:178:21
9:46
+0:13
25.2M
25.20 mi14:52:183:54:269:183:51
11:10
+1:24
Finish
26.22 mi15:02:014:04:099:199:43
9:32
-1:38

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

8:47 /mi

Average Pace

9:19 /mi

Slowest Pace

11:10 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:18:52

57% of race

Time at Steady Pace

1:04:26

26% of race

Time at Slower Pace

40:51

17% of race

Average Pace: 9:19 /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 mi11:25:2627:348:5227:34
8:52
#21874
10K
6.21 mi11:52:4454:528:5027:18
8:47
#21607
15K
9.32 mi12:20:201:22:288:5127:36
8:53
#21528
20K
12.43 mi12:48:141:50:228:5327:54
8:59
#21340
Half
13.11 mi12:54:281:56:368:546:14
9:08
#21412
25K
15.53 mi13:16:442:18:528:5622:16
9:11
#21293
30K
18.64 mi13:46:232:48:319:0229:39
9:33
#21061
20M
20.00 mi14:00:353:02:439:0814:12
10:27
#21185
21M
21.00 mi14:10:503:12:589:1110:15
10:15
#21073
35K
21.75 mi14:18:003:20:089:127:10
9:35
#21039
23M
23.00 mi14:30:333:32:419:1512:33
10:01
#21016
24M
24.00 mi14:40:063:42:149:169:33
9:33
#20973
40K
24.85 mi14:48:273:50:359:178:21
9:46
#20921
25.2M
25.20 mi14:52:183:54:269:183:51
11:10
#20911
Finish
26.22 mi15:02:014:04:099:199:43
9:32
#20912
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi218748555855521493(Top 76%)8273(Top 68%)8273(Top 456%)
10K6.21 mi3.10 mi21607+2678393+1628393+16221356(Top 75%)8229(Top 67%)8229(Top 454%)
15K9.32 mi3.11 mi21528+798321+728321+7221493(Top 76%)8273(Top 68%)8273(Top 456%)
20K12.43 mi3.11 mi21340+1888221+1008221+10020868(Top 73%)7983(Top 65%)7983(Top 440%)
Half13.11 mi0.68 mi21412-728269-488269-4822382(Top 79%)8812(Top 72%)8812(Top 486%)
25K15.53 mi2.42 mi21293+1198208+618208+6120705(Top 73%)7927(Top 65%)7927(Top 437%)
30K18.64 mi3.11 mi21061+2328123+858123+8520121(Top 71%)7724(Top 63%)7724(Top 426%)
20M20.00 mi1.36 mi21185-1248210-878210-8722287(Top 78%)9050(Top 74%)9050(Top 499%)
21M21.00 mi1.00 mi21073+1128165+458165+4519212(Top 68%)7447(Top 61%)7447(Top 411%)
35K21.75 mi0.75 mi21039+348157+88157+820633(Top 73%)8315(Top 68%)8315(Top 459%)
23M23.00 mi1.25 mi21016+238168-118168-1120578(Top 72%)8338(Top 68%)8338(Top 460%)
24M24.00 mi1.00 mi20973+438165+38165+319812(Top 70%)7987(Top 65%)7987(Top 441%)
40K24.85 mi0.85 mi20921+528159+68159+619720(Top 69%)8006(Top 65%)8006(Top 442%)
25.2M25.20 mi0.35 mi20911+108158+18158+121148(Top 74%)8731(Top 71%)8731(Top 482%)
Finish26.22 mi1.02 mi20912-18180-228180-2221309(Top 75%)8816(Top 72%)8816(Top 486%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 76%
×21story building
+97ft-345ft

Overall

21493

Females

8273

F45-49

8273

5K→10K

3.1 - 6.2 mi

Top 75%
×5story building
+79ft-138ft

Overall

21356

Females

8229

F45-49

8229

10K→15K

6.2 - 9.3 mi

Top 76%
×3story building
+67ft-78ft

Overall

21493

Females

8273

F45-49

8273

15K→20K

9.3 - 12.4 mi

Top 73%
×5story building
+106ft-86ft

Overall

20868

Females

7983

F45-49

7983

20K→Half

12.4 - 13.1 mi

Top 79%
×2story building
+19ft-37ft

Overall

22382

Females

8812

F45-49

8812

Half→25K

13.1 - 15.5 mi

Top 73%
×4story building
+66ft-88ft

Overall

20705

Females

7927

F45-49

7927

25K→30K

15.5 - 18.6 mi

Top 71%
×9story building
+181ft-148ft

Overall

20121

Females

7724

F45-49

7724

30K→20M

18.6 - 20.0 mi

Top 78%
×5story building
+64ft-50ft

Overall

22287

Females

9050

F45-49

9050

20M→21M

20.0 - 21.0 mi

Top 68%
×8story building
+106ft-24ft

Overall

19212

Females

7447

F45-49

7447

21M→35K

21.0 - 21.8 mi

Top 73%
×7story building
+17ft-86ft

Overall

20633

Females

8315

F45-49

8315

35K→23M

21.8 - 23.0 mi

Top 72%
×5story building
+23ft-63ft

Overall

20578

Females

8338

F45-49

8338

23M→24M

23.0 - 24.0 mi

Top 70%
×6story building
+12ft-82ft

Overall

19812

Females

7987

F45-49

7987

24M→40K

24.0 - 24.9 mi

Top 69%
×1story
+6ft-20ft

Overall

19720

Females

8006

F45-49

8006

40K→25.2M

24.9 - 25.2 mi

Top 74%
×1story
+13ft-16ft

Overall

21148

Females

8731

F45-49

8731

25.2M→Finish

25.2 - 26.2 mi

Top 75%
×2story building
+22ft-21ft

Overall

21309

Females

8816

F45-49

8816

Passing Analysis

Category:
Athletes Passed
2122
Passed By
1160
Net Change
+962
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21874
5K → 10K427160+267#21874#21607
10K → 15K246167+79#21607#21528
15K → 20K290102+188#21528#21340
20K → Half1486-72#21340#21412
Half → 25K20384+119#21412#21293
25K → 30K31684+232#21293#21061
30K → 20M72196-124#21061#21185
20M → 21M15038+112#21185#21073
21M → 35K8046+34#21073#21039
35K → 23M8764+23#21039#21016
23M → 24M7936+43#21016#20973
24M → 40K8533+52#20973#20921
40K → 25.2M2616+10#20921#20911
25.2M → Finish4748-1#20911#20912
TOTALS21221160+962
📊

Passing Visuals

Category:
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

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing