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BOSTON MARATHON 2025

Sarah Lee

Bib: 20423•F

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 37%
Masters (Masters Women)
#0 / 6759
Top 23%
Division (F50-54)
#0 / 1303
Top 14%
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
8:21/mi
25:55
↑ 97↓ 3451.5%
10K· 6.21 mi
8:13/mi
51:28
↑ 79↓ 1380.4%
15K· 9.32 mi
8:15/mi
1:17:05
↑ 67↓ 78
20K· 12.43 mi
8:04/mi
1:42:08
↑ 106↓ 860.1%
Half· 13.11 mi
8:04/mi
1:47:38
↑ 19↓ 370.5%
25K· 15.53 mi
8:07/mi
2:07:18
↑ 66↓ 880.2%
30K· 18.64 mi
8:11/mi
2:32:43
↑ 181↓ 1480.2%
20M
8:17/mi
2:43:58
↑ 64↓ 500.2%
21M
8:18/mi
2:52:16
↑ 106↓ 241.6%
35K· 21.75 mi
7:48/mi
2:58:06
↑ 17↓ 861.7%
23M
8:22/mi
3:08:35
↑ 23↓ 630.6%
24M
7:55/mi
3:16:30
↓ 821.3%
40K· 24.85 mi
7:58/mi
3:23:19
↓ 200.3%
25.2M
9:05/mi
3:26:27
↑ 13↓ 160.2%
Finish· 26.22 mi
7:51/mi
3:34:27
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:47:38
Pace8:13 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:46:49
Pace8:09 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:3625:558:2125:55
8:21
-
10K
6.21 mi11:45:0951:288:1725:33
8:13
-0:08
15K
9.32 mi12:10:461:17:058:1625:37
8:15
+0:02
20K
12.43 mi12:35:491:42:088:1325:03
8:04
-0:11
Half
13.11 mi12:41:191:47:388:135:30
8:04
0:00
25K
15.53 mi13:00:592:07:188:1219:40
8:07
+0:03
30K
18.64 mi13:26:242:32:438:1225:25
8:11
+0:04
20M
20.00 mi13:37:392:43:588:1211:15
8:17
+0:06
21M
21.00 mi13:45:572:52:168:128:18
8:18
+0:01
35K
21.75 mi13:51:472:58:068:115:50
7:48
-0:30
23M
23.00 mi14:02:163:08:358:1210:29
8:22
+0:34
24M
24.00 mi14:10:113:16:308:117:55
7:55
-0:27
40K
24.85 mi14:17:003:23:198:116:49
7:58
+0:03
25.2M
25.20 mi14:20:083:26:278:123:08
9:05
+1:07
Finish
26.22 mi14:28:083:34:278:118:00
7:51
-1:14

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

7:48 /mi

Average Pace

8:11 /mi

Slowest Pace

9:05 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:31:19

99% of race

Time at Steady Pace

3:08

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:11 /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 mi11:19:3625:558:2125:55
8:21
#18976
10K
6.21 mi11:45:0951:288:1725:33
8:13
#18503
15K
9.32 mi12:10:461:17:058:1625:37
8:15
#18211
20K
12.43 mi12:35:491:42:088:1325:03
8:04
#17463
Half
13.11 mi12:41:191:47:388:135:30
8:04
#17393
25K
15.53 mi13:00:592:07:188:1219:40
8:07
#16926
30K
18.64 mi13:26:242:32:438:1225:25
8:11
#16166
20M
20.00 mi13:37:392:43:588:1211:15
8:17
#15853
21M
21.00 mi13:45:572:52:168:128:18
8:18
#15417
35K
21.75 mi13:51:472:58:068:115:50
7:48
#15212
23M
23.00 mi14:02:163:08:358:1210:29
8:22
#15018
24M
24.00 mi14:10:113:16:308:117:55
7:55
#14795
40K
24.85 mi14:17:003:23:198:116:49
7:58
#14594
25.2M
25.20 mi14:20:083:26:278:123:08
9:05
#14543
Finish
26.22 mi14:28:083:34:278:118:00
7:51
#14402
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi189766892689217693(Top 62%)6131(Top 50%)6131(Top 471%)
10K6.21 mi3.10 mi18503+4736614+2786614+27818056(Top 64%)6325(Top 52%)6325(Top 485%)
15K9.32 mi3.11 mi18211+2926451+1636451+16317693(Top 62%)6131(Top 50%)6131(Top 471%)
20K12.43 mi3.11 mi17463+7486009+4426009+44215375(Top 54%)4846(Top 40%)4846(Top 372%)
Half13.11 mi0.68 mi17393+705977+325977+3216380(Top 58%)5385(Top 44%)5385(Top 413%)
25K15.53 mi2.42 mi16926+4675719+2585719+25814728(Top 52%)4603(Top 38%)4603(Top 353%)
30K18.64 mi3.11 mi16166+7605320+3995320+39912700(Top 45%)3668(Top 30%)3668(Top 282%)
20M20.00 mi1.36 mi15853+3135185+1355185+13512375(Top 44%)3639(Top 30%)3639(Top 279%)
21M21.00 mi1.00 mi15417+4364962+2234962+2239267(Top 33%)2291(Top 19%)2291(Top 176%)
35K21.75 mi0.75 mi15212+2054858+1044858+10410893(Top 38%)3076(Top 25%)3076(Top 236%)
23M23.00 mi1.25 mi15018+1944775+834775+8312530(Top 44%)4015(Top 33%)4015(Top 308%)
24M24.00 mi1.00 mi14795+2234683+924683+9210715(Top 38%)3156(Top 26%)3156(Top 242%)
40K24.85 mi0.85 mi14594+2014595+884595+8810061(Top 35%)2973(Top 24%)2973(Top 228%)
25.2M25.20 mi0.35 mi14543+514590+54590+512364(Top 44%)4163(Top 34%)4163(Top 319%)
Finish26.22 mi1.02 mi14402+1414539+514539+5111858(Top 42%)3866(Top 32%)3866(Top 297%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 62%
×21story building
+97ft-345ft

Overall

17693

Females

6131

F50-54

6131

5K→10K

3.1 - 6.2 mi

Top 64%
×5story building
+79ft-138ft

Overall

18056

Females

6325

F50-54

6325

10K→15K

6.2 - 9.3 mi

Top 62%
×3story building
+67ft-78ft

Overall

17693

Females

6131

F50-54

6131

15K→20K

9.3 - 12.4 mi

Top 54%
×5story building
+106ft-86ft

Overall

15375

Females

4846

F50-54

4846

20K→Half

12.4 - 13.1 mi

Top 58%
×2story building
+19ft-37ft

Overall

16380

Females

5385

F50-54

5385

Half→25K

13.1 - 15.5 mi

Top 52%
×4story building
+66ft-88ft

Overall

14728

Females

4603

F50-54

4603

25K→30K

15.5 - 18.6 mi

Top 45%
×9story building
+181ft-148ft

Overall

12700

Females

3668

F50-54

3668

30K→20M

18.6 - 20.0 mi

Top 44%
×5story building
+64ft-50ft

Overall

12375

Females

3639

F50-54

3639

20M→21M

20.0 - 21.0 mi

Top 33%
×8story building
+106ft-24ft

Overall

9267

Females

2291

F50-54

2291

21M→35K

21.0 - 21.8 mi

Top 38%
×7story building
+17ft-86ft

Overall

10893

Females

3076

F50-54

3076

35K→23M

21.8 - 23.0 mi

Top 44%
×5story building
+23ft-63ft

Overall

12530

Females

4015

F50-54

4015

23M→24M

23.0 - 24.0 mi

Top 38%
×6story building
+12ft-82ft

Overall

10715

Females

3156

F50-54

3156

24M→40K

24.0 - 24.9 mi

Top 35%
×1story
+6ft-20ft

Overall

10061

Females

2973

F50-54

2973

40K→25.2M

24.9 - 25.2 mi

Top 44%
×1story
+13ft-16ft

Overall

12364

Females

4163

F50-54

4163

25.2M→Finish

25.2 - 26.2 mi

Top 42%
×2story building
+22ft-21ft

Overall

11858

Females

3866

F50-54

3866

Passing Analysis

Category:
Athletes Passed
4828
Passed By
254
Net Change
+4574
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18976
5K → 10K578105+473#18976#18503
10K → 15K35462+292#18503#18211
15K → 20K7524+748#18211#17463
20K → Half8111+70#17463#17393
Half → 25K4736+467#17393#16926
25K → 30K7688+760#16926#16166
30K → 20M3174+313#16166#15853
20M → 21M4371+436#15853#15417
21M → 35K2061+205#15417#15212
35K → 23M21521+194#15212#15018
23M → 24M2263+223#15018#14795
24M → 40K2043+201#14795#14594
40K → 25.2M598+51#14594#14543
25.2M → Finish15817+141#14543#14402
TOTALS4828254+4574
📊

Passing Visuals

Category:
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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