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BOSTON MARATHON 2025

Terri Duffy

Bib: 28418•F

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
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
9:42/mi
30:09
↑ 97↓ 3451.5%
10K· 6.21 mi
9:32/mi
59:47
↑ 79↓ 1380.4%
15K· 9.32 mi
9:36/mi
1:29:36
↑ 67↓ 78
20K· 12.43 mi
9:46/mi
1:59:56
↑ 106↓ 860.1%
Half· 13.11 mi
9:36/mi
2:06:29
↑ 19↓ 370.5%
25K· 15.53 mi
9:50/mi
2:30:20
↑ 66↓ 880.2%
30K· 18.64 mi
10:05/mi
3:01:41
↑ 181↓ 1480.2%
20M
10:21/mi
3:15:45
↑ 64↓ 500.2%
21M
10:48/mi
3:26:33
↑ 106↓ 241.6%
35K· 21.75 mi
10:20/mi
3:34:17
↑ 17↓ 861.7%
23M
10:24/mi
3:47:18
↑ 23↓ 630.6%
24M
10:07/mi
3:57:25
↓ 821.3%
40K· 24.85 mi
10:19/mi
4:06:14
↓ 200.3%
25.2M
11:10/mi
4:10:05
↑ 13↓ 160.2%
Finish· 26.22 mi
9:37/mi
4:19:53
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:06:29
Pace9:39 /mi
2nd Half
Distance13.11 mi
Time2:13:24
Pace10:11 /mi
📊Positive Split: 5.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:49:2830:099:4230:09
9:42
-
10K
6.21 mi12:19:0659:479:3729:38
9:32
-0:10
15K
9.32 mi12:48:551:29:369:3729:49
9:36
+0:04
20K
12.43 mi13:19:151:59:569:3930:20
9:46
+0:10
Half
13.11 mi13:25:482:06:299:396:33
9:36
-0:10
25K
15.53 mi13:49:392:30:209:4123:51
9:50
+0:14
30K
18.64 mi14:21:003:01:419:4531:21
10:05
+0:15
20M
20.00 mi14:35:043:15:459:4714:04
10:21
+0:16
21M
21.00 mi14:45:523:26:339:5010:48
10:48
+0:27
35K
21.75 mi14:53:363:34:179:517:44
10:20
-0:28
23M
23.00 mi15:06:373:47:189:5313:01
10:24
+0:04
24M
24.00 mi15:16:443:57:259:5410:07
10:07
-0:17
40K
24.85 mi15:25:334:06:149:548:49
10:19
+0:12
25.2M
25.20 mi15:29:244:10:059:553:51
11:10
+0:51
Finish
26.22 mi15:39:124:19:539:559:48
9:37
-1:33

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

9:32 /mi

Average Pace

9:55 /mi

Slowest Pace

11:10 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

4:05:14

94% of race

Time at Steady Pace

14:39

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:55 /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 mi11:49:2830:099:4230:09
9:42
#24859
10K
6.21 mi12:19:0659:479:3729:38
9:32
#24513
15K
9.32 mi12:48:551:29:369:3729:49
9:36
#24348
20K
12.43 mi13:19:151:59:569:3930:20
9:46
#24164
Half
13.11 mi13:25:482:06:299:396:33
9:36
#24152
25K
15.53 mi13:49:392:30:209:4123:51
9:50
#23925
30K
18.64 mi14:21:003:01:419:4531:21
10:05
#23522
20M
20.00 mi14:35:043:15:459:4714:04
10:21
#23392
21M
21.00 mi14:45:523:26:339:5010:48
10:48
#23250
35K
21.75 mi14:53:363:34:179:517:44
10:20
#23230
23M
23.00 mi15:06:373:47:189:5313:01
10:24
#23147
24M
24.00 mi15:16:443:57:259:5410:07
10:07
#23075
40K
24.85 mi15:25:334:06:149:548:49
10:19
#23008
25.2M
25.20 mi15:29:244:10:059:553:51
11:10
#22990
Finish
26.22 mi15:39:124:19:539:559:48
9:37
#22944
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi24859101381013824005(Top 85%)9670(Top 79%)9670(Top 177%)
10K6.21 mi3.10 mi24513+3469958+1809958+18024209(Top 85%)9807(Top 80%)9807(Top 179%)
15K9.32 mi3.11 mi24348+1659872+869872+8624005(Top 85%)9670(Top 79%)9670(Top 177%)
20K12.43 mi3.11 mi24164+1849782+909782+9023667(Top 83%)9523(Top 78%)9523(Top 174%)
Half13.11 mi0.68 mi24152+129779+39779+323860(Top 84%)9621(Top 79%)9621(Top 176%)
25K15.53 mi2.42 mi23925+2279656+1239656+12322867(Top 81%)9126(Top 75%)9126(Top 167%)
30K18.64 mi3.11 mi23522+4039466+1909466+19021882(Top 77%)8717(Top 71%)8717(Top 159%)
20M20.00 mi1.36 mi23392+1309415+519415+5122028(Top 78%)8908(Top 73%)8908(Top 163%)
21M21.00 mi1.00 mi23250+1429362+539362+5320860(Top 73%)8384(Top 69%)8384(Top 153%)
35K21.75 mi0.75 mi23230+209359+39359+322807(Top 80%)9443(Top 77%)9443(Top 173%)
23M23.00 mi1.25 mi23147+839350+99350+921736(Top 77%)8940(Top 73%)8940(Top 163%)
24M24.00 mi1.00 mi23075+729330+209330+2021715(Top 76%)8980(Top 73%)8980(Top 164%)
40K24.85 mi0.85 mi23008+679311+199311+1921433(Top 75%)8897(Top 73%)8897(Top 163%)
25.2M25.20 mi0.35 mi22990+189305+69305+621171(Top 75%)8754(Top 72%)8754(Top 160%)
Finish26.22 mi1.02 mi22944+469290+159290+1521634(Top 76%)8981(Top 73%)8981(Top 164%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 85%
×21story building
+97ft-345ft

Overall

24005

Females

9670

F18-39

9670

5K→10K

3.1 - 6.2 mi

Top 85%
×5story building
+79ft-138ft

Overall

24209

Females

9807

F18-39

9807

10K→15K

6.2 - 9.3 mi

Top 85%
×3story building
+67ft-78ft

Overall

24005

Females

9670

F18-39

9670

15K→20K

9.3 - 12.4 mi

Top 83%
×5story building
+106ft-86ft

Overall

23667

Females

9523

F18-39

9523

20K→Half

12.4 - 13.1 mi

Top 84%
×2story building
+19ft-37ft

Overall

23860

Females

9621

F18-39

9621

Half→25K

13.1 - 15.5 mi

Top 81%
×4story building
+66ft-88ft

Overall

22867

Females

9126

F18-39

9126

25K→30K

15.5 - 18.6 mi

Top 77%
×9story building
+181ft-148ft

Overall

21882

Females

8717

F18-39

8717

30K→20M

18.6 - 20.0 mi

Top 78%
×5story building
+64ft-50ft

Overall

22028

Females

8908

F18-39

8908

20M→21M

20.0 - 21.0 mi

Top 73%
×8story building
+106ft-24ft

Overall

20860

Females

8384

F18-39

8384

21M→35K

21.0 - 21.8 mi

Top 80%
×7story building
+17ft-86ft

Overall

22807

Females

9443

F18-39

9443

35K→23M

21.8 - 23.0 mi

Top 77%
×5story building
+23ft-63ft

Overall

21736

Females

8940

F18-39

8940

23M→24M

23.0 - 24.0 mi

Top 76%
×6story building
+12ft-82ft

Overall

21715

Females

8980

F18-39

8980

24M→40K

24.0 - 24.9 mi

Top 75%
×1story
+6ft-20ft

Overall

21433

Females

8897

F18-39

8897

40K→25.2M

24.9 - 25.2 mi

Top 75%
×1story
+13ft-16ft

Overall

21171

Females

8754

F18-39

8754

25.2M→Finish

25.2 - 26.2 mi

Top 76%
×2story building
+22ft-21ft

Overall

21634

Females

8981

F18-39

8981

Passing Analysis

Category:
Athletes Passed
2305
Passed By
390
Net Change
+1915
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24859
5K → 10K41670+346#24859#24513
10K → 15K23267+165#24513#24348
15K → 20K23248+184#24348#24164
20K → Half2816+12#24164#24152
Half → 25K25528+227#24152#23925
25K → 30K41512+403#23925#23522
30K → 20M14616+130#23522#23392
20M → 21M15412+142#23392#23250
21M → 35K4727+20#23250#23230
35K → 23M11835+83#23230#23147
23M → 24M9119+72#23147#23075
24M → 40K8013+67#23075#23008
40K → 25.2M268+18#23008#22990
25.2M → Finish6519+46#22990#22944
TOTALS2305390+1915
📊

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