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BOSTON MARATHON 2025

Dora Kuo

Bib: 19507•F

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 46%
Gender (Female)
#0 / 12228
Top 30%
Division (F18-39)
#0 / 5469
Top 49%
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
7:30/mi
23:19
↑ 97↓ 3451.5%
10K· 6.21 mi
7:34/mi
46:49
↑ 79↓ 1380.4%
15K· 9.32 mi
7:41/mi
1:10:40
↑ 67↓ 78
20K· 12.43 mi
7:53/mi
1:35:11
↑ 106↓ 860.1%
Half· 13.11 mi
7:36/mi
1:40:22
↑ 19↓ 370.5%
25K· 15.53 mi
8:02/mi
1:59:50
↑ 66↓ 880.2%
30K· 18.64 mi
8:23/mi
2:25:53
↑ 181↓ 1480.2%
20M
8:22/mi
2:37:15
↑ 64↓ 500.2%
21M
8:58/mi
2:46:13
↑ 106↓ 241.6%
35K· 21.75 mi
8:05/mi
2:52:16
↑ 17↓ 861.7%
23M
8:18/mi
3:02:39
↑ 23↓ 630.6%
24M
8:17/mi
3:10:56
↓ 821.3%
40K· 24.85 mi
7:58/mi
3:17:45
↓ 200.3%
25.2M
8:59/mi
3:20:51
↑ 13↓ 160.2%
Finish· 26.22 mi
8:03/mi
3:29:03
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:40:22
Pace7:39 /mi
2nd Half
Distance13.11 mi
Time1:48:41
Pace8:17 /mi
📊Positive Split: 8.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:0123:197:3023:19
7:30
-
10K
6.21 mi11:41:3146:497:3223:30
7:34
+0:04
15K
9.32 mi12:05:221:10:407:3523:51
7:41
+0:07
20K
12.43 mi12:29:531:35:117:4024:31
7:53
+0:12
Half
13.11 mi12:35:041:40:227:395:11
7:36
-0:17
25K
15.53 mi12:54:321:59:507:4319:28
8:02
+0:26
30K
18.64 mi13:20:352:25:537:5026:03
8:23
+0:21
20M
20.00 mi13:31:572:37:157:5211:22
8:22
-0:01
21M
21.00 mi13:40:552:46:137:558:58
8:58
+0:36
35K
21.75 mi13:46:582:52:167:556:03
8:05
-0:53
23M
23.00 mi13:57:213:02:397:5610:23
8:18
+0:13
24M
24.00 mi14:05:383:10:567:578:17
8:17
-0:01
40K
24.85 mi14:12:273:17:457:576:49
7:58
-0:19
25.2M
25.20 mi14:15:333:20:517:583:06
8:59
+1:01
Finish
26.22 mi14:23:453:29:037:598:12
8:03
-0:56

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

7:30 /mi

Average Pace

7:59 /mi

Slowest Pace

8:59 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:20:54

67% of race

Time at Steady Pace

56:05

27% of race

Time at Slower Pace

12:04

6% of race

Average Pace: 7:58 /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 mi11:18:0123:197:3023:19
7:30
#12307
10K
6.21 mi11:41:3146:497:3223:30
7:34
#12449
15K
9.32 mi12:05:221:10:407:3523:51
7:41
#12714
20K
12.43 mi12:29:531:35:117:4024:31
7:53
#13002
Half
13.11 mi12:35:041:40:227:395:11
7:36
#12967
25K
15.53 mi12:54:321:59:507:4319:28
8:02
#13144
30K
18.64 mi13:20:352:25:537:5026:03
8:23
#13306
20M
20.00 mi13:31:572:37:157:5211:22
8:22
#13232
21M
21.00 mi13:40:552:46:137:558:58
8:58
#13207
35K
21.75 mi13:46:582:52:167:556:03
8:05
#13183
23M
23.00 mi13:57:213:02:397:5610:23
8:18
#13086
24M
24.00 mi14:05:383:10:567:578:17
8:17
#13079
40K
24.85 mi14:12:273:17:457:576:49
7:58
#12942
25.2M
25.20 mi14:15:333:20:517:583:06
8:59
#12928
Finish
26.22 mi14:23:453:29:037:598:12
8:03
#12932
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi123072968296813275(Top 47%)3601(Top 29%)3601(Top 66%)
10K6.21 mi3.10 mi12449-1423039-713039-7112712(Top 45%)3208(Top 26%)3208(Top 59%)
15K9.32 mi3.11 mi12714-2653215-1763215-17613275(Top 47%)3601(Top 29%)3601(Top 66%)
20K12.43 mi3.11 mi13002-2883447-2323447-23214014(Top 49%)4102(Top 34%)4102(Top 75%)
Half13.11 mi0.68 mi12967+353428+193428+1912626(Top 44%)3310(Top 27%)3310(Top 61%)
25K15.53 mi2.42 mi13144-1773561-1333561-13314127(Top 50%)4261(Top 35%)4261(Top 78%)
30K18.64 mi3.11 mi13306-1623720-1593720-15914051(Top 49%)4398(Top 36%)4398(Top 80%)
20M20.00 mi1.36 mi13232+743711+93711+912941(Top 46%)3939(Top 32%)3939(Top 72%)
21M21.00 mi1.00 mi13207+253727-163727-1613321(Top 47%)4274(Top 35%)4274(Top 78%)
35K21.75 mi0.75 mi13183+243727372712858(Top 45%)4077(Top 33%)4077(Top 75%)
23M23.00 mi1.25 mi13086+973720+73720+712020(Top 42%)3754(Top 31%)3754(Top 69%)
24M24.00 mi1.00 mi13079+73746-263746-2613153(Top 46%)4392(Top 36%)4392(Top 80%)
40K24.85 mi0.85 mi12942+1373700+463700+4610047(Top 35%)2959(Top 24%)2959(Top 54%)
25.2M25.20 mi0.35 mi12928+143704-43704-411802(Top 42%)3878(Top 32%)3878(Top 71%)
Finish26.22 mi1.02 mi12932-43725-213725-2113213(Top 47%)4553(Top 37%)4553(Top 83%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 47%
×21story building
+97ft-345ft

Overall

13275

Females

3601

F18-39

3601

5K→10K

3.1 - 6.2 mi

Top 45%
×5story building
+79ft-138ft

Overall

12712

Females

3208

F18-39

3208

10K→15K

6.2 - 9.3 mi

Top 47%
×3story building
+67ft-78ft

Overall

13275

Females

3601

F18-39

3601

15K→20K

9.3 - 12.4 mi

Top 49%
×5story building
+106ft-86ft

Overall

14014

Females

4102

F18-39

4102

20K→Half

12.4 - 13.1 mi

Top 44%
×2story building
+19ft-37ft

Overall

12626

Females

3310

F18-39

3310

Half→25K

13.1 - 15.5 mi

Top 50%
×4story building
+66ft-88ft

Overall

14127

Females

4261

F18-39

4261

25K→30K

15.5 - 18.6 mi

Top 49%
×9story building
+181ft-148ft

Overall

14051

Females

4398

F18-39

4398

30K→20M

18.6 - 20.0 mi

Top 46%
×5story building
+64ft-50ft

Overall

12941

Females

3939

F18-39

3939

20M→21M

20.0 - 21.0 mi

Top 47%
×8story building
+106ft-24ft

Overall

13321

Females

4274

F18-39

4274

21M→35K

21.0 - 21.8 mi

Top 45%
×7story building
+17ft-86ft

Overall

12858

Females

4077

F18-39

4077

35K→23M

21.8 - 23.0 mi

Top 42%
×5story building
+23ft-63ft

Overall

12020

Females

3754

F18-39

3754

23M→24M

23.0 - 24.0 mi

Top 46%
×6story building
+12ft-82ft

Overall

13153

Females

4392

F18-39

4392

24M→40K

24.0 - 24.9 mi

Top 35%
×1story
+6ft-20ft

Overall

10047

Females

2959

F18-39

2959

40K→25.2M

24.9 - 25.2 mi

Top 42%
×1story
+13ft-16ft

Overall

11802

Females

3878

F18-39

3878

25.2M→Finish

25.2 - 26.2 mi

Top 47%
×2story building
+22ft-21ft

Overall

13213

Females

4553

F18-39

4553

Passing Analysis

Category:
Athletes Passed
1603
Passed By
2228
Net Change
-625
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12307
5K → 10K204346-142#12307#12449
10K → 15K95360-265#12449#12714
15K → 20K123411-288#12714#13002
20K → Half5217+35#13002#12967
Half → 25K110287-177#12967#13144
25K → 30K192354-162#13144#13306
30K → 20M14672+74#13306#13232
20M → 21M11994+25#13232#13207
21M → 35K6743+24#13207#13183
35K → 23M15861+97#13183#13086
23M → 24M7366+7#13086#13079
24M → 40K14912+137#13079#12942
40K → 25.2M4127+14#12942#12928
25.2M → Finish7478-4#12928#12932
TOTALS16032228-625
📊

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