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BOSTON MARATHON 2025

Tiffany Lee

Bib: 21907•F

UT

0:00
0:00
/ mi
Masters
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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

Start
0:00:00
Race begins
5K· 3.11 mi
26:32
Rank: #20149
Start → 5K
26:32 | 8:32/mi
10K· 6.21 mi
53:58
Rank: #20850 (-701)
5K → 10K
27:26 | 8:50/mi
15K· 9.32 mi
1:20:38
Rank: #20492 (+358)
10K → 15K
26:40 | 8:35/mi
20K· 12.43 mi
1:47:52
Rank: #20298 (+194)
15K → 20K
27:14 | 8:46/mi
Half· 13.11 mi
1:53:46
Rank: #20288 (+10)
20K → Half
5:54 | 8:39/mi
25K· 15.53 mi
2:15:25
Rank: #20166 (+122)
Half → 25K
21:39 | 8:56/mi
30K· 18.64 mi
2:44:08
Rank: #19891 (+275)
25K → 30K
28:43 | 9:15/mi
20M
2:57:31
Rank: #19967 (-76)
30K → 20M
13:23 | 9:51/mi
21M
3:08:40
Rank: #20116 (-149)
20M → 21M
11:09 | 11:09/mi
35K· 21.75 mi
3:15:20
Rank: #20035 (+81)
21M → 35K
6:40 | 8:55/mi
23M
3:27:19
Rank: #19983 (+52)
35K → 23M
11:59 | 9:34/mi
24M
3:37:28
Rank: #20105 (-122)
23M → 24M
10:09 | 10:09/mi
40K· 24.85 mi
3:45:36
Rank: #20046 (+59)
24M → 40K
8:08 | 9:31/mi
25.2M
3:49:12
Rank: #20037 (+9)
40K → 25.2M
3:36 | 10:26/mi
Finish· 26.22 mi
3:58:22
Rank: #20017 (+20)
25.2M → Finish
9:10 | 9:00/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:53:46
Pace8:41 /mi
2nd Half
Distance13.11 mi
Time2:04:36
Pace9:30 /mi
📊Positive Split: 9.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:23:1326:328:3226:32
8:32
-
10K
6.21 mi11:50:3953:588:4127:26
8:50
+0:18
15K
9.32 mi12:17:191:20:388:3926:40
8:35
-0:15
20K
12.43 mi12:44:331:47:528:4127:14
8:46
+0:11
Half
13.11 mi12:50:271:53:468:415:54
8:39
-0:07
25K
15.53 mi13:12:062:15:258:4321:39
8:56
+0:17
30K
18.64 mi13:40:492:44:088:4828:43
9:15
+0:19
20M
20.00 mi13:54:122:57:318:5313:23
9:51
+0:36
21M
21.00 mi14:05:213:08:408:5911:09
11:09
+1:18
35K
21.75 mi14:12:013:15:208:596:40
8:55
-2:14
23M
23.00 mi14:24:003:27:199:0111:59
9:34
+0:39
24M
24.00 mi14:34:093:37:289:0410:09
10:09
+0:35
40K
24.85 mi14:42:173:45:369:058:08
9:31
-0:38
25.2M
25.20 mi14:45:533:49:129:063:36
10:26
+0:55
Finish
26.22 mi14:55:033:58:229:069:10
9:00
-1:26

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

8:32 /mi

Average Pace

9:06 /mi

Slowest Pace

11:09 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

53:12

22% of race

Time at Steady Pace

2:06:46

53% of race

Time at Slower Pace

58:24

25% of race

Average Pace: 9:05 /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 mi11:23:1326:328:3226:32
8:32
#20149
10K
6.21 mi11:50:3953:588:4127:26
8:50
#20850
15K
9.32 mi12:17:191:20:388:3926:40
8:35
#20492
20K
12.43 mi12:44:331:47:528:4127:14
8:46
#20298
Half
13.11 mi12:50:271:53:468:415:54
8:39
#20288
25K
15.53 mi13:12:062:15:258:4321:39
8:56
#20166
30K
18.64 mi13:40:492:44:088:4828:43
9:15
#19891
20M
20.00 mi13:54:122:57:318:5313:23
9:51
#19967
21M
21.00 mi14:05:213:08:408:5911:09
11:09
#20116
35K
21.75 mi14:12:013:15:208:596:40
8:55
#20035
23M
23.00 mi14:24:003:27:199:0111:59
9:34
#19983
24M
24.00 mi14:34:093:37:289:0410:09
10:09
#20105
40K
24.85 mi14:42:173:45:369:058:08
9:31
#20046
25.2M
25.20 mi14:45:533:49:129:063:36
10:26
#20037
Finish
26.22 mi14:55:033:58:229:069:10
9:00
#20017
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi201497590759019844(Top 70%)7360(Top 60%)7360(Top 406%)
10K6.21 mi3.10 mi20850-7017967-3777967-37721551(Top 76%)8339(Top 68%)8339(Top 460%)
15K9.32 mi3.11 mi20492+3587747+2207747+22019844(Top 70%)7360(Top 60%)7360(Top 406%)
20K12.43 mi3.11 mi20298+1947646+1017646+10119776(Top 70%)7358(Top 60%)7358(Top 406%)
Half13.11 mi0.68 mi20288+107645+17645+120101(Top 71%)7541(Top 62%)7541(Top 416%)
25K15.53 mi2.42 mi20166+1227584+617584+6119590(Top 69%)7311(Top 60%)7311(Top 403%)
30K18.64 mi3.11 mi19891+2757459+1257459+12518872(Top 66%)7052(Top 58%)7052(Top 389%)
20M20.00 mi1.36 mi19967-767528-697528-6920453(Top 72%)8049(Top 66%)8049(Top 444%)
21M21.00 mi1.00 mi20116-1497648-1207648-12021772(Top 77%)8844(Top 72%)8844(Top 488%)
35K21.75 mi0.75 mi20035+817613+357613+3517856(Top 63%)6832(Top 56%)6832(Top 377%)
23M23.00 mi1.25 mi19983+527609+47609+418989(Top 67%)7512(Top 61%)7512(Top 414%)
24M24.00 mi1.00 mi20105-1227694-857694-8521803(Top 77%)9035(Top 74%)9035(Top 498%)
40K24.85 mi0.85 mi20046+597682+127682+1218787(Top 66%)7525(Top 62%)7525(Top 415%)
25.2M25.20 mi0.35 mi20037+97691-97691-918838(Top 66%)7549(Top 62%)7549(Top 416%)
Finish26.22 mi1.02 mi20017+207688+37688+319055(Top 67%)7634(Top 62%)7634(Top 421%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 70%
×21stories
+97ft-345ft

Overall

19844

Females

7360

F45-49

7360

5K→10K

3.1 - 6.2 mi

Top 76%
×5stories
+79ft-138ft

Overall

21551

Females

8339

F45-49

8339

10K→15K

6.2 - 9.3 mi

Top 70%
×3stories
+67ft-78ft

Overall

19844

Females

7360

F45-49

7360

15K→20K

9.3 - 12.4 mi

Top 70%
×5stories
+106ft-86ft

Overall

19776

Females

7358

F45-49

7358

20K→Half

12.4 - 13.1 mi

Top 71%
×2stories
+19ft-37ft

Overall

20101

Females

7541

F45-49

7541

Half→25K

13.1 - 15.5 mi

Top 69%
×4stories
+66ft-88ft

Overall

19590

Females

7311

F45-49

7311

25K→30K

15.5 - 18.6 mi

Top 66%
×9stories
+181ft-148ft

Overall

18872

Females

7052

F45-49

7052

30K→20M

18.6 - 20.0 mi

Top 72%
×5stories
+64ft-50ft

Overall

20453

Females

8049

F45-49

8049

20M→21M

20.0 - 21.0 mi

Top 77%
×8stories
+106ft-24ft

Overall

21772

Females

8844

F45-49

8844

21M→35K

21.0 - 21.8 mi

Top 63%
×7stories
+17ft-86ft

Overall

17856

Females

6832

F45-49

6832

35K→23M

21.8 - 23.0 mi

Top 67%
×5stories
+23ft-63ft

Overall

18989

Females

7512

F45-49

7512

23M→24M

23.0 - 24.0 mi

Top 77%
×6stories
+12ft-82ft

Overall

21803

Females

9035

F45-49

9035

24M→40K

24.0 - 24.9 mi

Top 66%
×1story
+6ft-20ft

Overall

18787

Females

7525

F45-49

7525

40K→25.2M

24.9 - 25.2 mi

Top 66%
×1story
+13ft-16ft

Overall

18838

Females

7549

F45-49

7549

25.2M→Finish

25.2 - 26.2 mi

Top 67%
×2stories
+22ft-21ft

Overall

19055

Females

7634

F45-49

7634

Passing Analysis

Category:
Athletes Passed
1968
Passed By
1836
Net Change
+132
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20149
5K → 10K83784-701#20149#20850
10K → 15K42163+358#20850#20492
15K → 20K27884+194#20492#20298
20K → Half3828+10#20298#20288
Half → 25K21694+122#20288#20166
25K → 30K36590+275#20166#19891
30K → 20M86162-76#19891#19967
20M → 21M54203-149#19967#20116
21M → 35K9716+81#20116#20035
35K → 23M10654+52#20035#19983
23M → 24M29151-122#19983#20105
24M → 40K8122+59#20105#20046
40K → 25.2M3526+9#20046#20037
25.2M → Finish7959+20#20037#20017
TOTALS19681836+132
📊

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