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BOSTON MARATHON 2025

Tracy Larson

Bib: 8399•F

CO

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 30%
Gender (Female)
#0 / 12228
Top 13%
Masters (Masters Women)
#0 / 6759
Top 4%
Division (F40-44)
#0 / 1718
Top 9%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:34
Rank: #10020
Start → 5K
22:34 | 7:16/mi
10K· 6.21 mi
45:09
Rank: #10054 (-34)
5K → 10K
22:35 | 7:16/mi
15K· 9.32 mi
1:07:50
Rank: #10022 (+32)
10K → 15K
22:41 | 7:18/mi
20K· 12.43 mi
1:30:36
Rank: #9784 (+238)
15K → 20K
22:46 | 7:20/mi
Half· 13.11 mi
1:35:33
Rank: #9769 (+15)
20K → Half
4:57 | 7:15/mi
25K· 15.53 mi
1:53:22
Rank: #9555 (+214)
Half → 25K
17:49 | 7:21/mi
30K· 18.64 mi
2:17:02
Rank: #9280 (+275)
25K → 30K
23:40 | 7:37/mi
20M
2:27:33
Rank: #9211 (+69)
30K → 20M
10:31 | 7:44/mi
21M
2:35:33
Rank: #9046 (+165)
20M → 21M
8:00 | 8:00/mi
35K· 21.75 mi
2:41:08
Rank: #8997 (+49)
21M → 35K
5:35 | 7:28/mi
23M
2:50:44
Rank: #8842 (+155)
35K → 23M
9:36 | 7:40/mi
24M
2:58:12
Rank: #8734 (+108)
23M → 24M
7:28 | 7:28/mi
40K· 24.85 mi
3:04:40
Rank: #8628 (+106)
24M → 40K
6:28 | 7:34/mi
25.2M
3:07:29
Rank: #8574 (+54)
40K → 25.2M
2:49 | 8:10/mi
Finish· 26.22 mi
3:14:46
Rank: #8473 (+101)
25.2M → Finish
7:17 | 7:09/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:35:33
Pace7:17 /mi
2nd Half
Distance13.11 mi
Time1:39:13
Pace7:34 /mi
📊Positive Split: 3.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:31:1622:347:1622:34
7:16
-
10K
6.21 mi10:53:5145:097:1622:35
7:16
0:00
15K
9.32 mi11:16:321:07:507:1722:41
7:18
+0:02
20K
12.43 mi11:39:181:30:367:1722:46
7:20
+0:02
Half
13.11 mi11:44:151:35:337:174:57
7:15
-0:05
25K
15.53 mi12:02:041:53:227:1817:49
7:21
+0:06
30K
18.64 mi12:25:442:17:027:2123:40
7:37
+0:16
20M
20.00 mi12:36:152:27:337:2310:31
7:44
+0:07
21M
21.00 mi12:44:152:35:337:248:00
8:00
+0:16
35K
21.75 mi12:49:502:41:087:255:35
7:28
-0:32
23M
23.00 mi12:59:262:50:447:259:36
7:40
+0:12
24M
24.00 mi13:06:542:58:127:267:28
7:28
-0:12
40K
24.85 mi13:13:223:04:407:266:28
7:34
+0:06
25.2M
25.20 mi13:16:113:07:297:262:49
8:10
+0:36
Finish
26.22 mi13:23:283:14:467:267:17
7:09
-1:01

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

7:09 /mi

Average Pace

7:26 /mi

Slowest Pace

8:10 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:03:57

94% of race

Time at Steady Pace

10:49

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:26 /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 mi10:31:1622:347:1622:34
7:16
#10020
10K
6.21 mi10:53:5145:097:1622:35
7:16
#10054
15K
9.32 mi11:16:321:07:507:1722:41
7:18
#10022
20K
12.43 mi11:39:181:30:367:1722:46
7:20
#9784
Half
13.11 mi11:44:151:35:337:174:57
7:15
#9769
25K
15.53 mi12:02:041:53:227:1817:49
7:21
#9555
30K
18.64 mi12:25:442:17:027:2123:40
7:37
#9280
20M
20.00 mi12:36:152:27:337:2310:31
7:44
#9211
21M
21.00 mi12:44:152:35:337:248:00
8:00
#9046
35K
21.75 mi12:49:502:41:087:255:35
7:28
#8997
23M
23.00 mi12:59:262:50:447:259:36
7:40
#8842
24M
24.00 mi13:06:542:58:127:267:28
7:28
#8734
40K
24.85 mi13:13:223:04:407:266:28
7:34
#8628
25.2M
25.20 mi13:16:113:07:297:262:49
8:10
#8574
Finish
26.22 mi13:23:283:14:467:267:17
7:09
#8473
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi100201815181510009(Top 35%)1888(Top 15%)1888(Top 110%)
10K6.21 mi3.10 mi10054-341834-191834-1910103(Top 36%)1871(Top 15%)1871(Top 109%)
15K9.32 mi3.11 mi10022+321850-161850-1610009(Top 35%)1888(Top 15%)1888(Top 110%)
20K12.43 mi3.11 mi9784+2381768+821768+829278(Top 33%)1639(Top 13%)1639(Top 95%)
Half13.11 mi0.68 mi9769+151762+61762+69645(Top 34%)1773(Top 14%)1773(Top 103%)
25K15.53 mi2.42 mi9555+2141704+581704+588742(Top 31%)1526(Top 12%)1526(Top 89%)
30K18.64 mi3.11 mi9280+2751633+711633+718591(Top 30%)1637(Top 13%)1637(Top 95%)
20M20.00 mi1.36 mi9211+691628+51628+58642(Top 30%)1805(Top 15%)1805(Top 105%)
21M21.00 mi1.00 mi9046+1651592+361592+367366(Top 26%)1461(Top 12%)1461(Top 85%)
35K21.75 mi0.75 mi8997+491594-21594-28390(Top 30%)1831(Top 15%)1831(Top 107%)
23M23.00 mi1.25 mi8842+1551570+241570+247716(Top 27%)1694(Top 14%)1694(Top 99%)
24M24.00 mi1.00 mi8734+1081562+81562+87487(Top 26%)1655(Top 14%)1655(Top 96%)
40K24.85 mi0.85 mi8628+106156215627210(Top 25%)1640(Top 13%)1640(Top 95%)
25.2M25.20 mi0.35 mi8574+541552+101552+106935(Top 24%)1607(Top 13%)1607(Top 94%)
Finish26.22 mi1.02 mi8473+1011530+221530+226720(Top 24%)1541(Top 13%)1541(Top 90%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 35%
×21stories
+97ft-345ft

Overall

10009

Females

1888

F40-44

1888

5K→10K

3.1 - 6.2 mi

Top 36%
×5stories
+79ft-138ft

Overall

10103

Females

1871

F40-44

1871

10K→15K

6.2 - 9.3 mi

Top 35%
×3stories
+67ft-78ft

Overall

10009

Females

1888

F40-44

1888

15K→20K

9.3 - 12.4 mi

Top 33%
×5stories
+106ft-86ft

Overall

9278

Females

1639

F40-44

1639

20K→Half

12.4 - 13.1 mi

Top 34%
×2stories
+19ft-37ft

Overall

9645

Females

1773

F40-44

1773

Half→25K

13.1 - 15.5 mi

Top 31%
×4stories
+66ft-88ft

Overall

8742

Females

1526

F40-44

1526

25K→30K

15.5 - 18.6 mi

Top 30%
×9stories
+181ft-148ft

Overall

8591

Females

1637

F40-44

1637

30K→20M

18.6 - 20.0 mi

Top 30%
×5stories
+64ft-50ft

Overall

8642

Females

1805

F40-44

1805

20M→21M

20.0 - 21.0 mi

Top 26%
×8stories
+106ft-24ft

Overall

7366

Females

1461

F40-44

1461

21M→35K

21.0 - 21.8 mi

Top 30%
×7stories
+17ft-86ft

Overall

8390

Females

1831

F40-44

1831

35K→23M

21.8 - 23.0 mi

Top 27%
×5stories
+23ft-63ft

Overall

7716

Females

1694

F40-44

1694

23M→24M

23.0 - 24.0 mi

Top 26%
×6stories
+12ft-82ft

Overall

7487

Females

1655

F40-44

1655

24M→40K

24.0 - 24.9 mi

Top 25%
×1story
+6ft-20ft

Overall

7210

Females

1640

F40-44

1640

40K→25.2M

24.9 - 25.2 mi

Top 24%
×1story
+13ft-16ft

Overall

6935

Females

1607

F40-44

1607

25.2M→Finish

25.2 - 26.2 mi

Top 24%
×2stories
+22ft-21ft

Overall

6720

Females

1541

F40-44

1541

Passing Analysis

Category:
Athletes Passed
2428*
Passed By
880
Net Change
+1547
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10020
5K → 10K221254-34#10020#10054
10K → 15K190158+32#10054#10022
15K → 20K307*69+238#10022#9784
20K → Half4025+15#9784#9769
Half → 25K26147+214#9769#9555
25K → 30K36186+275#9555#9280
30K → 20M12859+69#9280#9211
20M → 21M18823+165#9211#9046
21M → 35K8536+49#9046#8997
35K → 23M18833+155#8997#8842
23M → 24M13729+108#8842#8734
24M → 40K13327+106#8734#8628
40K → 25.2M6511+54#8628#8574
25.2M → Finish12423+101#8574#8473
TOTALS2428*880+1547

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

📊

Passing Visuals

Category:
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🔥Passing Intensity

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing