Boston Marathon logo
BOSTON MARATHON 2025

Tracy Heinrich

Bib: 21951•F

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Top 48%
Division (F50-54)
#0 / 1303
Top 45%
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
8:28/mi
26:17
↑ 97↓ 3451.5%
10K· 6.21 mi
8:28/mi
52:35
↑ 79↓ 1380.4%
15K· 9.32 mi
8:31/mi
1:19:04
↑ 67↓ 78
20K· 12.43 mi
8:39/mi
1:45:56
↑ 106↓ 860.1%
Half· 13.11 mi
8:32/mi
1:51:45
↑ 19↓ 370.5%
25K· 15.53 mi
8:51/mi
2:13:12
↑ 66↓ 880.2%
30K· 18.64 mi
9:10/mi
2:41:41
↑ 181↓ 1480.2%
20M
9:16/mi
2:54:17
↑ 64↓ 500.2%
21M
9:53/mi
3:04:10
↑ 106↓ 241.6%
35K· 21.75 mi
8:45/mi
3:10:43
↑ 17↓ 861.7%
23M
9:13/mi
3:22:15
↑ 23↓ 630.6%
24M
8:50/mi
3:31:05
↓ 821.3%
40K· 24.85 mi
9:09/mi
3:38:54
↓ 200.3%
25.2M
9:54/mi
3:42:19
↑ 13↓ 160.2%
Finish· 26.22 mi
9:01/mi
3:51:30
↑ 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
Time1:51:45
Pace8:31 /mi
2nd Half
Distance13.11 mi
Time1:59:45
Pace9:08 /mi
📊Positive Split: 7.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:4626:178:2826:17
8:28
-
10K
6.21 mi11:47:0452:358:2826:18
8:28
0:00
15K
9.32 mi12:13:331:19:048:2926:29
8:31
+0:03
20K
12.43 mi12:40:251:45:568:3126:52
8:39
+0:08
Half
13.11 mi12:46:141:51:458:315:49
8:32
-0:07
25K
15.53 mi13:07:412:13:128:3421:27
8:51
+0:19
30K
18.64 mi13:36:102:41:418:4028:29
9:10
+0:19
20M
20.00 mi13:48:462:54:178:4312:36
9:16
+0:06
21M
21.00 mi13:58:393:04:108:469:53
9:53
+0:37
35K
21.75 mi14:05:123:10:438:466:33
8:45
-1:08
23M
23.00 mi14:16:443:22:158:4811:32
9:13
+0:28
24M
24.00 mi14:25:343:31:058:488:50
8:50
-0:23
40K
24.85 mi14:33:233:38:548:487:49
9:09
+0:19
25.2M
25.20 mi14:36:483:42:198:493:25
9:54
+0:45
Finish
26.22 mi14:45:593:51:308:509:11
9:01
-0:53

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

8:28 /mi

Average Pace

8:50 /mi

Slowest Pace

9:54 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:38:12

94% of race

Time at Steady Pace

13:18

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:50 /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 mi11:20:4626:178:2826:17
8:28
#19657
10K
6.21 mi11:47:0452:358:2826:18
8:28
#19614
15K
9.32 mi12:13:331:19:048:2926:29
8:31
#19560
20K
12.43 mi12:40:251:45:568:3126:52
8:39
#19415
Half
13.11 mi12:46:141:51:458:315:49
8:32
#19421
25K
15.53 mi13:07:412:13:128:3421:27
8:51
#19362
30K
18.64 mi13:36:102:41:418:4028:29
9:10
#19196
20M
20.00 mi13:48:462:54:178:4312:36
9:16
#19095
21M
21.00 mi13:58:393:04:108:469:53
9:53
#19015
35K
21.75 mi14:05:123:10:438:466:33
8:45
#18932
23M
23.00 mi14:16:443:22:158:4811:32
9:13
#18828
24M
24.00 mi14:25:343:31:058:488:50
8:50
#18742
40K
24.85 mi14:33:233:38:548:487:49
9:09
#18655
25.2M
25.20 mi14:36:483:42:198:493:25
9:54
#18617
Finish
26.22 mi14:45:593:51:308:509:11
9:01
#18644
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi196577296729619480(Top 69%)7159(Top 59%)7159(Top 549%)
10K6.21 mi3.10 mi19614+437251+457251+4519609(Top 69%)7242(Top 59%)7242(Top 556%)
15K9.32 mi3.11 mi19560+547210+417210+4119480(Top 69%)7159(Top 59%)7159(Top 549%)
20K12.43 mi3.11 mi19415+1457137+737137+7319141(Top 67%)6989(Top 57%)6989(Top 536%)
Half13.11 mi0.68 mi19421-67146-97146-919412(Top 68%)7133(Top 58%)7133(Top 547%)
25K15.53 mi2.42 mi19362+597125+217125+2119194(Top 68%)7079(Top 58%)7079(Top 543%)
30K18.64 mi3.11 mi19196+1667071+547071+5418496(Top 65%)6834(Top 56%)6834(Top 524%)
20M20.00 mi1.36 mi19095+1017031+407031+4018178(Top 64%)6818(Top 56%)6818(Top 523%)
21M21.00 mi1.00 mi19015+807015+167015+1617857(Top 63%)6717(Top 55%)6717(Top 516%)
35K21.75 mi0.75 mi18932+836987+286987+2817071(Top 60%)6392(Top 52%)6392(Top 491%)
23M23.00 mi1.25 mi18828+1046956+316956+3117399(Top 61%)6662(Top 54%)6662(Top 511%)
24M24.00 mi1.00 mi18742+866928+286928+2816527(Top 58%)6225(Top 51%)6225(Top 478%)
40K24.85 mi0.85 mi18655+876904+246904+2417113(Top 60%)6644(Top 54%)6644(Top 510%)
25.2M25.20 mi0.35 mi18617+386901+36901+316661(Top 59%)6429(Top 53%)6429(Top 493%)
Finish26.22 mi1.02 mi18644-276927-266927-2619129(Top 67%)7679(Top 63%)7679(Top 589%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 69%
×21story building
+97ft-345ft

Overall

19480

Females

7159

F50-54

7159

5K→10K

3.1 - 6.2 mi

Top 69%
×5story building
+79ft-138ft

Overall

19609

Females

7242

F50-54

7242

10K→15K

6.2 - 9.3 mi

Top 69%
×3story building
+67ft-78ft

Overall

19480

Females

7159

F50-54

7159

15K→20K

9.3 - 12.4 mi

Top 67%
×5story building
+106ft-86ft

Overall

19141

Females

6989

F50-54

6989

20K→Half

12.4 - 13.1 mi

Top 68%
×2story building
+19ft-37ft

Overall

19412

Females

7133

F50-54

7133

Half→25K

13.1 - 15.5 mi

Top 68%
×4story building
+66ft-88ft

Overall

19194

Females

7079

F50-54

7079

25K→30K

15.5 - 18.6 mi

Top 65%
×9story building
+181ft-148ft

Overall

18496

Females

6834

F50-54

6834

30K→20M

18.6 - 20.0 mi

Top 64%
×5story building
+64ft-50ft

Overall

18178

Females

6818

F50-54

6818

20M→21M

20.0 - 21.0 mi

Top 63%
×8story building
+106ft-24ft

Overall

17857

Females

6717

F50-54

6717

21M→35K

21.0 - 21.8 mi

Top 60%
×7story building
+17ft-86ft

Overall

17071

Females

6392

F50-54

6392

35K→23M

21.8 - 23.0 mi

Top 61%
×5story building
+23ft-63ft

Overall

17399

Females

6662

F50-54

6662

23M→24M

23.0 - 24.0 mi

Top 58%
×6story building
+12ft-82ft

Overall

16527

Females

6225

F50-54

6225

24M→40K

24.0 - 24.9 mi

Top 60%
×1story
+6ft-20ft

Overall

17113

Females

6644

F50-54

6644

40K→25.2M

24.9 - 25.2 mi

Top 59%
×1story
+13ft-16ft

Overall

16661

Females

6429

F50-54

6429

25.2M→Finish

25.2 - 26.2 mi

Top 67%
×2story building
+22ft-21ft

Overall

19129

Females

7679

F50-54

7679

Passing Analysis

Category:
Athletes Passed
2164
Passed By
1151
Net Change
+1013
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19657
5K → 10K276233+43#19657#19614
10K → 15K215161+54#19614#19560
15K → 20K275130+145#19560#19415
20K → Half3440-6#19415#19421
Half → 25K191132+59#19421#19362
25K → 30K301135+166#19362#19196
30K → 20M15655+101#19196#19095
20M → 21M13353+80#19095#19015
21M → 35K9815+83#19015#18932
35K → 23M15652+104#18932#18828
23M → 24M11024+86#18828#18742
24M → 40K11730+87#18742#18655
40K → 25.2M5113+38#18655#18617
25.2M → Finish5178-27#18617#18644
TOTALS21641151+1013
📊

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