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BOSTON MARATHON 2025

Sydney Lee

Bib: 14556•F

CA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 49%
Gender (Female)
#0 / 12228
Top 35%
Division (F18-39)
#0 / 5469
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
7:19/mi
22:44
↑ 97↓ 3451.5%
10K· 6.21 mi
7:20/mi
45:32
↑ 79↓ 1380.4%
15K· 9.32 mi
7:14/mi
1:07:59
↑ 67↓ 78
20K· 12.43 mi
7:14/mi
1:30:26
↑ 106↓ 860.1%
Half· 13.11 mi
7:37/mi
1:35:38
↑ 19↓ 370.5%
25K· 15.53 mi
7:38/mi
1:54:08
↑ 66↓ 880.2%
30K· 18.64 mi
7:54/mi
2:18:40
↑ 181↓ 1480.2%
20M
8:41/mi
2:30:28
↑ 64↓ 500.2%
21M
10:13/mi
2:40:41
↑ 106↓ 241.6%
35K· 21.75 mi
9:44/mi
2:47:58
↑ 17↓ 861.7%
23M
11:12/mi
3:02:00
↑ 23↓ 630.6%
24M
9:07/mi
3:11:07
↓ 821.3%
40K· 24.85 mi
9:47/mi
3:19:29
↓ 200.3%
25.2M
10:35/mi
3:23:08
↑ 13↓ 160.2%
Finish· 26.22 mi
8:56/mi
3:32:14
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:35:38
Pace7:18 /mi
2nd Half
Distance13.11 mi
Time1:56:36
Pace8:54 /mi
📊Positive Split: 21.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:4922:447:1922:44
7:19
-
10K
6.21 mi11:15:3745:327:2022:48
7:20
+0:01
15K
9.32 mi11:38:041:07:597:1822:27
7:14
-0:06
20K
12.43 mi12:00:311:30:267:1722:27
7:14
0:00
Half
13.11 mi12:05:431:35:387:185:12
7:37
+0:23
25K
15.53 mi12:24:131:54:087:2118:30
7:38
+0:01
30K
18.64 mi12:48:452:18:407:2624:32
7:54
+0:16
20M
20.00 mi13:00:332:30:287:3111:48
8:41
+0:47
21M
21.00 mi13:10:462:40:417:3910:13
10:13
+1:32
35K
21.75 mi13:18:032:47:587:437:17
9:44
-0:29
23M
23.00 mi13:32:053:02:007:5514:02
11:12
+1:28
24M
24.00 mi13:41:123:11:077:589:07
9:07
-2:05
40K
24.85 mi13:49:343:19:298:028:22
9:47
+0:40
25.2M
25.20 mi13:53:133:23:088:043:39
10:35
+0:48
Finish
26.22 mi14:02:193:32:148:069:06
8:56
-1:39

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

7:14 /mi

Average Pace

8:06 /mi

Slowest Pace

11:12 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:18:40

65% of race

Time at Steady Pace

30:01

14% of race

Time at Slower Pace

43:33

21% of race

Average Pace: 8:06 /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 mi10:52:4922:447:1922:44
7:19
#10559
10K
6.21 mi11:15:3745:327:2022:48
7:20
#10586
15K
9.32 mi11:38:041:07:597:1822:27
7:14
#10165
20K
12.43 mi12:00:311:30:267:1722:27
7:14
#9670
Half
13.11 mi12:05:431:35:387:185:12
7:37
#9838
25K
15.53 mi12:24:131:54:087:2118:30
7:38
#9978
30K
18.64 mi12:48:452:18:407:2624:32
7:54
#10041
20M
20.00 mi13:00:332:30:287:3111:48
8:41
#10451
21M
21.00 mi13:10:462:40:417:3910:13
10:13
#11089
35K
21.75 mi13:18:032:47:587:437:17
9:44
#11607
23M
23.00 mi13:32:053:02:007:5514:02
11:12
#12863
24M
24.00 mi13:41:123:11:077:589:07
9:07
#13134
40K
24.85 mi13:49:343:19:298:028:22
9:47
#13453
25.2M
25.20 mi13:53:133:23:088:043:39
10:35
#13597
Finish
26.22 mi14:02:193:32:148:069:06
8:56
#13816
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi10559206720679357(Top 33%)1592(Top 13%)1592(Top 29%)
10K6.21 mi3.10 mi10586-272101-342101-3410671(Top 38%)2148(Top 18%)2148(Top 39%)
15K9.32 mi3.11 mi10165+4211917+1841917+1849357(Top 33%)1592(Top 13%)1592(Top 29%)
20K12.43 mi3.11 mi9670+4951724+1931724+1938445(Top 30%)1298(Top 11%)1298(Top 24%)
Half13.11 mi0.68 mi9838-1681793-691793-6912859(Top 45%)3438(Top 28%)3438(Top 63%)
25K15.53 mi2.42 mi9978-1401894-1011894-10111010(Top 39%)2599(Top 21%)2599(Top 48%)
30K18.64 mi3.11 mi10041-631975-811975-8110622(Top 37%)2611(Top 21%)2611(Top 48%)
20M20.00 mi1.36 mi10451-4102223-2482223-24814953(Top 53%)5012(Top 41%)5012(Top 92%)
21M21.00 mi1.00 mi11089-6382593-3702593-37019081(Top 67%)7365(Top 60%)7365(Top 135%)
35K21.75 mi0.75 mi11607-5182891-2982891-29821117(Top 74%)8559(Top 70%)8559(Top 157%)
23M23.00 mi1.25 mi12863-12563590-6993590-69923695(Top 83%)9945(Top 81%)9945(Top 182%)
24M24.00 mi1.00 mi13134-2713784-1943784-19417969(Top 63%)7016(Top 57%)7016(Top 128%)
40K24.85 mi0.85 mi13453-3193970-1863970-18619771(Top 70%)8023(Top 66%)8023(Top 147%)
25.2M25.20 mi0.35 mi13597-1444069-994069-9919305(Top 68%)7793(Top 64%)7793(Top 142%)
Finish26.22 mi1.02 mi13816-2194221-1524221-15218676(Top 66%)7411(Top 61%)7411(Top 136%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 33%
×21story building
+97ft-345ft

Overall

9357

Females

1592

F18-39

1592

5K→10K

3.1 - 6.2 mi

Top 38%
×5story building
+79ft-138ft

Overall

10671

Females

2148

F18-39

2148

10K→15K

6.2 - 9.3 mi

Top 33%
×3story building
+67ft-78ft

Overall

9357

Females

1592

F18-39

1592

15K→20K

9.3 - 12.4 mi

Top 30%
×5story building
+106ft-86ft

Overall

8445

Females

1298

F18-39

1298

20K→Half

12.4 - 13.1 mi

Top 45%
×2story building
+19ft-37ft

Overall

12859

Females

3438

F18-39

3438

Half→25K

13.1 - 15.5 mi

Top 39%
×4story building
+66ft-88ft

Overall

11010

Females

2599

F18-39

2599

25K→30K

15.5 - 18.6 mi

Top 37%
×9story building
+181ft-148ft

Overall

10622

Females

2611

F18-39

2611

30K→20M

18.6 - 20.0 mi

Top 53%
×5story building
+64ft-50ft

Overall

14953

Females

5012

F18-39

5012

20M→21M

20.0 - 21.0 mi

Top 67%
×8story building
+106ft-24ft

Overall

19081

Females

7365

F18-39

7365

21M→35K

21.0 - 21.8 mi

Top 74%
×7story building
+17ft-86ft

Overall

21117

Females

8559

F18-39

8559

35K→23M

21.8 - 23.0 mi

Top 83%
×5story building
+23ft-63ft

Overall

23695

Females

9945

F18-39

9945

23M→24M

23.0 - 24.0 mi

Top 63%
×6story building
+12ft-82ft

Overall

17969

Females

7016

F18-39

7016

24M→40K

24.0 - 24.9 mi

Top 70%
×1story
+6ft-20ft

Overall

19771

Females

8023

F18-39

8023

40K→25.2M

24.9 - 25.2 mi

Top 68%
×1story
+13ft-16ft

Overall

19305

Females

7793

F18-39

7793

25.2M→Finish

25.2 - 26.2 mi

Top 66%
×2story building
+22ft-21ft

Overall

18676

Females

7411

F18-39

7411

Passing Analysis

Category:
Athletes Passed
1678*
Passed By
4933
Net Change
-3257
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10559
5K → 10K249276-27#10559#10586
10K → 15K44120+421#10586#10165
15K → 20K506*11+495#10165#9670
20K → Half3171-168#9670#9838
Half → 25K112252-140#9838#9978
25K → 30K208270-63#9978#10041
30K → 20M47456-410#10041#10451
20M → 21M14652-638#10451#11089
21M → 35K6524-518#11089#11607
35K → 23M121268-1256#11607#12863
23M → 24M27298-271#12863#13134
24M → 40K18337-319#13134#13453
40K → 25.2M12156-144#13453#13597
25.2M → Finish23242-219#13597#13816
TOTALS1678*4933-3257

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

📊

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