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BOSTON MARATHON 2025

Katie Duckworth

Bib: 9643•F

UT

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 8%
Gender (Female)
#0 / 12228
Top 0.9%
Division (F18-39)
#0 / 5469
Top 2%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:38
Rank: #4962
Start → 5K
20:38 | 6:38/mi
10K· 6.21 mi
40:31
Rank: #3931 (+1031)
5K → 10K
19:53 | 6:24/mi
15K· 9.32 mi
1:00:06
Rank: #3314 (+617)
10K → 15K
19:35 | 6:18/mi
20K· 12.43 mi
1:19:36
Rank: #2892 (+422)
15K → 20K
19:30 | 6:17/mi
Half· 13.11 mi
1:23:49
Rank: #2828 (+64)
20K → Half
4:13 | 6:11/mi
25K· 15.53 mi
1:39:12
Rank: #2664 (+164)
Half → 25K
15:23 | 6:21/mi
30K· 18.64 mi
1:59:42
Rank: #2570 (+94)
25K → 30K
20:30 | 6:36/mi
20M
2:08:49
Rank: #2516 (+54)
30K → 20M
9:07 | 6:43/mi
21M
2:15:49
Rank: #2484 (+32)
20M → 21M
7:00 | 7:00/mi
35K· 21.75 mi
2:20:36
Rank: #2443 (+41)
21M → 35K
4:47 | 6:24/mi
23M
2:29:02
Rank: #2403 (+40)
35K → 23M
8:26 | 6:44/mi
24M
2:35:34
Rank: #2378 (+25)
23M → 24M
6:32 | 6:32/mi
40K· 24.85 mi
2:41:18
Rank: #2352 (+26)
24M → 40K
5:44 | 6:42/mi
25.2M
2:43:49
Rank: #2344 (+8)
40K → 25.2M
2:31 | 7:18/mi
Finish· 26.22 mi
2:50:10
Rank: #2301 (+43)
25.2M → Finish
6:21 | 6:14/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:23:49
Pace6:24 /mi
2nd Half
Distance13.11 mi
Time1:26:21
Pace6:35 /mi
📊Positive Split: 3.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:46:3720:386:3820:38
6:38
-
10K
6.21 mi11:06:3040:316:3119:53
6:24
-0:14
15K
9.32 mi11:26:051:00:066:2719:35
6:18
-0:06
20K
12.43 mi11:45:351:19:366:2419:30
6:17
-0:01
Half
13.11 mi11:49:481:23:496:244:13
6:11
-0:06
25K
15.53 mi12:05:111:39:126:2315:23
6:21
+0:10
30K
18.64 mi12:25:411:59:426:2520:30
6:36
+0:15
20M
20.00 mi12:34:482:08:496:269:07
6:43
+0:07
21M
21.00 mi12:41:482:15:496:287:00
7:00
+0:17
35K
21.75 mi12:46:352:20:366:284:47
6:24
-0:36
23M
23.00 mi12:55:012:29:026:298:26
6:44
+0:20
24M
24.00 mi13:01:332:35:346:296:32
6:32
-0:12
40K
24.85 mi13:07:172:41:186:295:44
6:42
+0:10
25.2M
25.20 mi13:09:482:43:496:302:31
7:18
+0:36
Finish
26.22 mi13:16:092:50:106:306:21
6:14
-1:04

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

6:11 /mi

Average Pace

6:30 /mi

Slowest Pace

7:18 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:40:39

94% of race

Time at Steady Pace

7:00

4% of race

Time at Slower Pace

2:31

1% of race

Average Pace: 6:29 /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 mi10:46:3720:386:3820:38
6:38
#4962
10K
6.21 mi11:06:3040:316:3119:53
6:24
#3931
15K
9.32 mi11:26:051:00:066:2719:35
6:18
#3314
20K
12.43 mi11:45:351:19:366:2419:30
6:17
#2892
Half
13.11 mi11:49:481:23:496:244:13
6:11
#2828
25K
15.53 mi12:05:111:39:126:2315:23
6:21
#2664
30K
18.64 mi12:25:411:59:426:2520:30
6:36
#2570
20M
20.00 mi12:34:482:08:496:269:07
6:43
#2516
21M
21.00 mi12:41:482:15:496:287:00
7:00
#2484
35K
21.75 mi12:46:352:20:366:284:47
6:24
#2443
23M
23.00 mi12:55:012:29:026:298:26
6:44
#2403
24M
24.00 mi13:01:332:35:346:296:32
6:32
#2378
40K
24.85 mi13:07:172:41:186:295:44
6:42
#2352
25.2M
25.20 mi13:09:482:43:496:302:31
7:18
#2344
Finish
26.22 mi13:16:092:50:106:306:21
6:14
#2301
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi49623103102362(Top 8%)102(Top 0.8%)102(Top 2%)
10K6.21 mi3.10 mi3931+1031208+102208+1023061(Top 11%)140(Top 1%)140(Top 3%)
15K9.32 mi3.11 mi3314+617159+49159+492362(Top 8%)102(Top 0.8%)102(Top 2%)
20K12.43 mi3.11 mi2892+422127+32127+321927(Top 7%)85(Top 0.7%)85(Top 2%)
Half13.11 mi0.68 mi2828+64125+2125+21943(Top 7%)84(Top 0.7%)84(Top 2%)
25K15.53 mi2.42 mi2664+164114+11114+112091(Top 7%)95(Top 0.8%)95(Top 2%)
30K18.64 mi3.11 mi2570+94108+6108+62415(Top 9%)122(Top 1.0%)122(Top 2%)
20M20.00 mi1.36 mi2516+54109-1109-12524(Top 9%)138(Top 1%)138(Top 3%)
21M21.00 mi1.00 mi2484+32108+1108+12281(Top 8%)140(Top 1%)140(Top 3%)
35K21.75 mi0.75 mi2443+41106+2106+22041(Top 7%)120(Top 1.0%)120(Top 2%)
23M23.00 mi1.25 mi2403+40109-3109-32431(Top 9%)167(Top 1%)167(Top 3%)
24M24.00 mi1.00 mi2378+25108+1108+12215(Top 8%)153(Top 1%)153(Top 3%)
40K24.85 mi0.85 mi2352+26109-1109-12430(Top 9%)195(Top 2%)195(Top 4%)
25.2M25.20 mi0.35 mi2344+8111-2111-22598(Top 9%)260(Top 2%)260(Top 5%)
Finish26.22 mi1.02 mi2301+431111111649(Top 6%)111(Top 0.9%)111(Top 2%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 8%
×21stories
+97ft-345ft

Overall

2362

Females

102

F18-39

102

5K→10K

3.1 - 6.2 mi

Top 11%
×5stories
+79ft-138ft

Overall

3061

Females

140

F18-39

140

10K→15K

6.2 - 9.3 mi

Top 8%
×3stories
+67ft-78ft

Overall

2362

Females

102

F18-39

102

15K→20K

9.3 - 12.4 mi

Top 7%
×5stories
+106ft-86ft

Overall

1927

Females

85

F18-39

85

20K→Half

12.4 - 13.1 mi

Top 7%
×2stories
+19ft-37ft

Overall

1943

Females

84

F18-39

84

Half→25K

13.1 - 15.5 mi

Top 7%
×4stories
+66ft-88ft

Overall

2091

Females

95

F18-39

95

25K→30K

15.5 - 18.6 mi

Top 9%
×9stories
+181ft-148ft

Overall

2415

Females

122

F18-39

122

30K→20M

18.6 - 20.0 mi

Top 9%
×5stories
+64ft-50ft

Overall

2524

Females

138

F18-39

138

20M→21M

20.0 - 21.0 mi

Top 8%
×8stories
+106ft-24ft

Overall

2281

Females

140

F18-39

140

21M→35K

21.0 - 21.8 mi

Top 7%
×7stories
+17ft-86ft

Overall

2041

Females

120

F18-39

120

35K→23M

21.8 - 23.0 mi

Top 9%
×5stories
+23ft-63ft

Overall

2431

Females

167

F18-39

167

23M→24M

23.0 - 24.0 mi

Top 8%
×6stories
+12ft-82ft

Overall

2215

Females

153

F18-39

153

24M→40K

24.0 - 24.9 mi

Top 9%
×1story
+6ft-20ft

Overall

2430

Females

195

F18-39

195

40K→25.2M

24.9 - 25.2 mi

Top 9%
×1story
+13ft-16ft

Overall

2598

Females

260

F18-39

260

25.2M→Finish

25.2 - 26.2 mi

Top 6%
×2stories
+22ft-21ft

Overall

1649

Females

111

F18-39

111

Passing Analysis

Category:
Athletes Passed
2871
Passed By
210
Net Change
+2661
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4962
5K → 10K10321+1031#4962#3931
10K → 15K6170+617#3931#3314
15K → 20K4231+422#3314#2892
20K → Half651+64#2892#2828
Half → 25K1728+164#2828#2664
25K → 30K13642+94#2664#2570
30K → 20M7622+54#2570#2516
20M → 21M6028+32#2516#2484
21M → 35K498+41#2484#2443
35K → 23M6929+40#2443#2403
23M → 24M5126+25#2403#2378
24M → 40K3913+26#2378#2352
40K → 25.2M2416+8#2352#2344
25.2M → Finish5815+43#2344#2301
TOTALS2871210+2661
📊

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