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BOSTON MARATHON 2025

Katherine Bitters

Bib: 25990•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
8:58/mi
27:50
↑ 97↓ 3451.5%
10K· 6.21 mi
8:40/mi
54:47
↑ 79↓ 1380.4%
15K· 9.32 mi
9:28/mi
1:24:12
↑ 67↓ 78
20K· 12.43 mi
9:45/mi
1:54:29
↑ 106↓ 860.1%
Half· 13.11 mi
8:56/mi
2:00:35
↑ 19↓ 370.5%
25K· 15.53 mi
9:20/mi
2:23:13
↑ 66↓ 880.2%
30K· 18.64 mi
9:42/mi
2:53:21
↑ 181↓ 1480.2%
20M
9:34/mi
3:06:21
↑ 64↓ 500.2%
21M
10:19/mi
3:16:40
↑ 106↓ 241.6%
35K· 21.75 mi
9:37/mi
3:23:52
↑ 17↓ 861.7%
23M
9:36/mi
3:35:53
↑ 23↓ 630.6%
24M
9:11/mi
3:45:04
↓ 821.3%
40K· 24.85 mi
9:24/mi
3:53:06
↓ 200.3%
25.2M
9:37/mi
3:56:25
↑ 13↓ 160.2%
Finish· 26.22 mi
8:49/mi
4:05:24
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:00:35
Pace9:12 /mi
2nd Half
Distance13.11 mi
Time2:04:49
Pace9:31 /mi
📊Positive Split: 3.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:48:0927:508:5827:50
8:58
-
10K
6.21 mi12:15:0654:478:4926:57
8:40
-0:18
15K
9.32 mi12:44:311:24:129:0229:25
9:28
+0:48
20K
12.43 mi13:14:481:54:299:1330:17
9:45
+0:17
Half
13.11 mi13:20:542:00:359:126:06
8:56
-0:49
25K
15.53 mi13:43:322:23:139:1322:38
9:20
+0:24
30K
18.64 mi14:13:402:53:219:1830:08
9:42
+0:22
20M
20.00 mi14:26:403:06:219:1913:00
9:34
-0:08
21M
21.00 mi14:36:593:16:409:2210:19
10:19
+0:45
35K
21.75 mi14:44:113:23:529:227:12
9:37
-0:42
23M
23.00 mi14:56:123:35:539:2312:01
9:36
-0:01
24M
24.00 mi15:05:233:45:049:239:11
9:11
-0:25
40K
24.85 mi15:13:253:53:069:238:02
9:24
+0:13
25.2M
25.20 mi15:16:443:56:259:233:19
9:37
+0:13
Finish
26.22 mi15:25:434:05:249:228:59
8:49
-0:48

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

8:40 /mi

Average Pace

9:22 /mi

Slowest Pace

10:19 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:19:08

57% of race

Time at Steady Pace

1:35:57

39% of race

Time at Slower Pace

10:19

4% of race

Average Pace: 9:22 /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 mi11:48:0927:508:5827:50
8:58
#22251
10K
6.21 mi12:15:0654:478:4926:57
8:40
#21539
15K
9.32 mi12:44:311:24:129:0229:25
9:28
#22422
20K
12.43 mi13:14:481:54:299:1330:17
9:45
#22843
Half
13.11 mi13:20:542:00:359:126:06
8:56
#22771
25K
15.53 mi13:43:322:23:139:1322:38
9:20
#22503
30K
18.64 mi14:13:402:53:219:1830:08
9:42
#22157
20M
20.00 mi14:26:403:06:219:1913:00
9:34
#21947
21M
21.00 mi14:36:593:16:409:2210:19
10:19
#21780
35K
21.75 mi14:44:113:23:529:227:12
9:37
#21743
23M
23.00 mi14:56:123:35:539:2312:01
9:36
#21569
24M
24.00 mi15:05:233:45:049:239:11
9:11
#21421
40K
24.85 mi15:13:253:53:069:238:02
9:24
#21296
25.2M
25.20 mi15:16:443:56:259:233:19
9:37
#21212
Finish
26.22 mi15:25:434:05:249:228:59
8:49
#21103
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi222518764876423650(Top 83%)9462(Top 77%)9462(Top 173%)
10K6.21 mi3.10 mi21539+7128360+4048360+40420745(Top 73%)7887(Top 64%)7887(Top 144%)
15K9.32 mi3.11 mi22422-8838819-4598819-45923650(Top 83%)9462(Top 77%)9462(Top 173%)
20K12.43 mi3.11 mi22843-4219033-2149033-21423617(Top 83%)9491(Top 78%)9491(Top 174%)
Half13.11 mi0.68 mi22771+728996+378996+3721602(Top 76%)8371(Top 68%)8371(Top 153%)
25K15.53 mi2.42 mi22503+2688864+1328864+13221318(Top 75%)8266(Top 68%)8266(Top 151%)
30K18.64 mi3.11 mi22157+3468710+1548710+15420694(Top 73%)8047(Top 66%)8047(Top 147%)
20M20.00 mi1.36 mi21947+2108603+1078603+10719500(Top 69%)7528(Top 62%)7528(Top 138%)
21M21.00 mi1.00 mi21780+1678543+608543+6019449(Top 68%)7590(Top 62%)7590(Top 139%)
35K21.75 mi0.75 mi21743+378534+98534+920786(Top 73%)8387(Top 69%)8387(Top 153%)
23M23.00 mi1.25 mi21569+1748475+598475+5919090(Top 67%)7562(Top 62%)7562(Top 138%)
24M24.00 mi1.00 mi21421+1488404+718404+7118305(Top 64%)7207(Top 59%)7207(Top 132%)
40K24.85 mi0.85 mi21296+1258362+428362+4218306(Top 64%)7284(Top 60%)7284(Top 133%)
25.2M25.20 mi0.35 mi21212+848326+368326+3615310(Top 54%)5751(Top 47%)5751(Top 105%)
Finish26.22 mi1.02 mi21103+1098280+468280+4618166(Top 64%)7175(Top 59%)7175(Top 131%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 83%
×21story building
+97ft-345ft

Overall

23650

Females

9462

F18-39

9462

5K→10K

3.1 - 6.2 mi

Top 73%
×5story building
+79ft-138ft

Overall

20745

Females

7887

F18-39

7887

10K→15K

6.2 - 9.3 mi

Top 83%
×3story building
+67ft-78ft

Overall

23650

Females

9462

F18-39

9462

15K→20K

9.3 - 12.4 mi

Top 83%
×5story building
+106ft-86ft

Overall

23617

Females

9491

F18-39

9491

20K→Half

12.4 - 13.1 mi

Top 76%
×2story building
+19ft-37ft

Overall

21602

Females

8371

F18-39

8371

Half→25K

13.1 - 15.5 mi

Top 75%
×4story building
+66ft-88ft

Overall

21318

Females

8266

F18-39

8266

25K→30K

15.5 - 18.6 mi

Top 73%
×9story building
+181ft-148ft

Overall

20694

Females

8047

F18-39

8047

30K→20M

18.6 - 20.0 mi

Top 69%
×5story building
+64ft-50ft

Overall

19500

Females

7528

F18-39

7528

20M→21M

20.0 - 21.0 mi

Top 68%
×8story building
+106ft-24ft

Overall

19449

Females

7590

F18-39

7590

21M→35K

21.0 - 21.8 mi

Top 73%
×7story building
+17ft-86ft

Overall

20786

Females

8387

F18-39

8387

35K→23M

21.8 - 23.0 mi

Top 67%
×5story building
+23ft-63ft

Overall

19090

Females

7562

F18-39

7562

23M→24M

23.0 - 24.0 mi

Top 64%
×6story building
+12ft-82ft

Overall

18305

Females

7207

F18-39

7207

24M→40K

24.0 - 24.9 mi

Top 64%
×1story
+6ft-20ft

Overall

18306

Females

7284

F18-39

7284

40K→25.2M

24.9 - 25.2 mi

Top 54%
×1story
+13ft-16ft

Overall

15310

Females

5751

F18-39

5751

25.2M→Finish

25.2 - 26.2 mi

Top 64%
×2story building
+22ft-21ft

Overall

18166

Females

7175

F18-39

7175

Passing Analysis

Category:
Athletes Passed
2767
Passed By
1619
Net Change
+1148
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22251
5K → 10K77260+712#22251#21539
10K → 15K43926-883#21539#22422
15K → 20K74495-421#22422#22843
20K → Half797+72#22843#22771
Half → 25K29527+268#22771#22503
25K → 30K38236+346#22503#22157
30K → 20M22010+210#22157#21947
20M → 21M18013+167#21947#21780
21M → 35K6124+37#21780#21743
35K → 23M1828+174#21743#21569
23M → 24M1491+148#21569#21421
24M → 40K1294+125#21421#21296
40K → 25.2M851+84#21296#21212
25.2M → Finish1167+109#21212#21103
TOTALS27671619+1148
📊

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