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BOSTON MARATHON 2025

Katherine Shy

Bib: 10321•F

MD

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 20%
Gender (Female)
#0 / 12228
Top 5%
Division (F18-39)
#0 / 5469
Top 9%
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
7:13/mi
22:24
↑ 97↓ 3451.5%
10K· 6.21 mi
7:04/mi
44:22
↑ 79↓ 1380.4%
15K· 9.32 mi
7:00/mi
1:06:06
↑ 67↓ 78
20K· 12.43 mi
6:59/mi
1:27:48
↑ 106↓ 860.1%
Half· 13.11 mi
6:52/mi
1:32:29
↑ 19↓ 370.5%
25K· 15.53 mi
6:55/mi
1:49:16
↑ 66↓ 880.2%
30K· 18.64 mi
7:04/mi
2:11:14
↑ 181↓ 1480.2%
20M
7:09/mi
2:20:57
↑ 64↓ 500.2%
21M
7:19/mi
2:28:16
↑ 106↓ 241.6%
35K· 21.75 mi
6:38/mi
2:33:14
↑ 17↓ 861.7%
23M
6:59/mi
2:41:58
↑ 23↓ 630.6%
24M
6:51/mi
2:48:49
↓ 821.3%
40K· 24.85 mi
6:56/mi
2:54:45
↓ 200.3%
25.2M
7:41/mi
2:57:24
↑ 13↓ 160.2%
Finish· 26.22 mi
6:45/mi
3:04:17
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:32:29
Pace7:03 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:31:48
Pace7:00 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:3922:247:1322:24
7:13
-
10K
6.21 mi11:10:3744:227:0821:58
7:04
-0:09
15K
9.32 mi11:32:211:06:067:0621:44
7:00
-0:04
20K
12.43 mi11:54:031:27:487:0421:42
6:59
-0:01
Half
13.11 mi11:58:441:32:297:034:41
6:52
-0:07
25K
15.53 mi12:15:311:49:167:0216:47
6:55
+0:03
30K
18.64 mi12:37:292:11:147:0221:58
7:04
+0:09
20M
20.00 mi12:47:122:20:577:039:43
7:09
+0:05
21M
21.00 mi12:54:312:28:167:047:19
7:19
+0:10
35K
21.75 mi12:59:292:33:147:034:58
6:38
-0:41
23M
23.00 mi13:08:132:41:587:038:44
6:59
+0:21
24M
24.00 mi13:15:042:48:497:026:51
6:51
-0:08
40K
24.85 mi13:21:002:54:457:025:56
6:56
+0:05
25.2M
25.20 mi13:23:392:57:247:022:39
7:41
+0:45
Finish
26.22 mi13:30:323:04:177:026:53
6:45
-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

6:38 /mi

Average Pace

7:02 /mi

Slowest Pace

7:41 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:54:19

95% of race

Time at Steady Pace

9:58

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:02 /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 mi10:48:3922:247:1322:24
7:13
#9545
10K
6.21 mi11:10:3744:227:0821:58
7:04
#8947
15K
9.32 mi11:32:211:06:067:0621:44
7:00
#8417
20K
12.43 mi11:54:031:27:487:0421:42
6:59
#7924
Half
13.11 mi11:58:441:32:297:034:41
6:52
#7860
25K
15.53 mi12:15:311:49:167:0216:47
6:55
#7476
30K
18.64 mi12:37:292:11:147:0221:58
7:04
#6930
20M
20.00 mi12:47:122:20:577:039:43
7:09
#6704
21M
21.00 mi12:54:312:28:167:047:19
7:19
#6442
35K
21.75 mi12:59:292:33:147:034:58
6:38
#6290
23M
23.00 mi13:08:132:41:587:038:44
6:59
#6059
24M
24.00 mi13:15:042:48:497:026:51
6:51
#5915
40K
24.85 mi13:21:002:54:457:025:56
6:56
#5769
25.2M
25.20 mi13:23:392:57:247:022:39
7:41
#5701
Finish
26.22 mi13:30:323:04:177:026:53
6:45
#5588
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi9545160016007613(Top 27%)900(Top 7%)900(Top 16%)
10K6.21 mi3.10 mi8947+5981363+2371363+2378426(Top 30%)1155(Top 9%)1155(Top 21%)
15K9.32 mi3.11 mi8417+5301163+2001163+2007613(Top 27%)900(Top 7%)900(Top 16%)
20K12.43 mi3.11 mi7924+493998+165998+1656794(Top 24%)726(Top 6%)726(Top 13%)
Half13.11 mi0.68 mi7860+64977+21977+216715(Top 24%)693(Top 6%)693(Top 13%)
25K15.53 mi2.42 mi7476+384865+112865+1125829(Top 21%)556(Top 5%)556(Top 10%)
30K18.64 mi3.11 mi6930+546756+109756+1095162(Top 18%)479(Top 4%)479(Top 9%)
20M20.00 mi1.36 mi6704+226725+31725+314956(Top 17%)495(Top 4%)495(Top 9%)
21M21.00 mi1.00 mi6442+262680+45680+453731(Top 13%)322(Top 3%)322(Top 6%)
35K21.75 mi0.75 mi6290+152651+29651+293221(Top 11%)270(Top 2%)270(Top 5%)
23M23.00 mi1.25 mi6059+231617+34617+343647(Top 13%)342(Top 3%)342(Top 6%)
24M24.00 mi1.00 mi5915+144606+11606+113848(Top 14%)431(Top 4%)431(Top 8%)
40K24.85 mi0.85 mi5769+146585+21585+213612(Top 13%)407(Top 3%)407(Top 7%)
25.2M25.20 mi0.35 mi5701+68576+9576+94334(Top 15%)656(Top 5%)656(Top 12%)
Finish26.22 mi1.02 mi5588+113564+12564+124262(Top 15%)617(Top 5%)617(Top 11%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 27%
×21story building
+97ft-345ft

Overall

7613

Females

900

F18-39

900

5K→10K

3.1 - 6.2 mi

Top 30%
×5story building
+79ft-138ft

Overall

8426

Females

1155

F18-39

1155

10K→15K

6.2 - 9.3 mi

Top 27%
×3story building
+67ft-78ft

Overall

7613

Females

900

F18-39

900

15K→20K

9.3 - 12.4 mi

Top 24%
×5story building
+106ft-86ft

Overall

6794

Females

726

F18-39

726

20K→Half

12.4 - 13.1 mi

Top 24%
×2story building
+19ft-37ft

Overall

6715

Females

693

F18-39

693

Half→25K

13.1 - 15.5 mi

Top 21%
×4story building
+66ft-88ft

Overall

5829

Females

556

F18-39

556

25K→30K

15.5 - 18.6 mi

Top 18%
×9story building
+181ft-148ft

Overall

5162

Females

479

F18-39

479

30K→20M

18.6 - 20.0 mi

Top 17%
×5story building
+64ft-50ft

Overall

4956

Females

495

F18-39

495

20M→21M

20.0 - 21.0 mi

Top 13%
×8story building
+106ft-24ft

Overall

3731

Females

322

F18-39

322

21M→35K

21.0 - 21.8 mi

Top 11%
×7story building
+17ft-86ft

Overall

3221

Females

270

F18-39

270

35K→23M

21.8 - 23.0 mi

Top 13%
×5story building
+23ft-63ft

Overall

3647

Females

342

F18-39

342

23M→24M

23.0 - 24.0 mi

Top 14%
×6story building
+12ft-82ft

Overall

3848

Females

431

F18-39

431

24M→40K

24.0 - 24.9 mi

Top 13%
×1story
+6ft-20ft

Overall

3612

Females

407

F18-39

407

40K→25.2M

24.9 - 25.2 mi

Top 15%
×1story
+13ft-16ft

Overall

4334

Females

656

F18-39

656

25.2M→Finish

25.2 - 26.2 mi

Top 15%
×2story building
+22ft-21ft

Overall

4262

Females

617

F18-39

617

Passing Analysis

Category:
Athletes Passed
4064
Passed By
107
Net Change
+3957
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9545
5K → 10K64143+598#9545#8947
10K → 15K54616+530#8947#8417
15K → 20K5018+493#8417#7924
20K → Half640+64#7924#7860
Half → 25K3884+384#7860#7476
25K → 30K5515+546#7476#6930
30K → 20M2304+226#6930#6704
20M → 21M2631+262#6704#6442
21M → 35K1531+152#6442#6290
35K → 23M2321+231#6290#6059
23M → 24M15410+144#6059#5915
24M → 40K1493+146#5915#5769
40K → 25.2M713+68#5769#5701
25.2M → Finish1218+113#5701#5588
TOTALS4064107+3957
📊

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