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BOSTON MARATHON 2025

Marianne Bialkowski

Bib: 25457•F

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0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F60-64)
#0 / 624
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
9:32/mi
29:38
↑ 97↓ 3451.5%
10K· 6.21 mi
9:44/mi
59:51
↑ 79↓ 1380.4%
15K· 9.32 mi
9:49/mi
1:30:21
↑ 67↓ 78
20K· 12.43 mi
9:56/mi
2:01:12
↑ 106↓ 860.1%
Half· 13.11 mi
9:43/mi
2:07:50
↑ 19↓ 370.5%
25K· 15.53 mi
10:01/mi
2:32:08
↑ 66↓ 880.2%
30K· 18.64 mi
10:30/mi
3:04:46
↑ 181↓ 1480.2%
20M
10:32/mi
3:19:05
↑ 64↓ 500.2%
21M
11:04/mi
3:30:09
↑ 106↓ 241.6%
35K· 21.75 mi
10:06/mi
3:37:42
↑ 17↓ 861.7%
23M
10:28/mi
3:50:48
↑ 23↓ 630.6%
24M
10:23/mi
4:01:11
↓ 821.3%
40K· 24.85 mi
10:46/mi
4:10:23
↓ 200.3%
25.2M
11:42/mi
4:14:25
↑ 13↓ 160.2%
Finish· 26.22 mi
10:21/mi
4:24:58
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:07:50
Pace9:45 /mi
2nd Half
Distance13.11 mi
Time2:17:08
Pace10:28 /mi
📊Positive Split: 7.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:28:3629:389:3229:38
9:32
-
10K
6.21 mi11:58:4959:519:3830:13
9:44
+0:12
15K
9.32 mi12:29:191:30:219:4230:30
9:49
+0:05
20K
12.43 mi13:00:102:01:129:4530:51
9:56
+0:07
Half
13.11 mi13:06:482:07:509:456:38
9:43
-0:13
25K
15.53 mi13:31:062:32:089:4824:18
10:01
+0:18
30K
18.64 mi14:03:443:04:469:5532:38
10:30
+0:29
20M
20.00 mi14:18:033:19:059:5714:19
10:32
+0:02
21M
21.00 mi14:29:073:30:0910:0011:04
11:04
+0:32
35K
21.75 mi14:36:403:37:4210:017:33
10:06
-0:58
23M
23.00 mi14:49:463:50:4810:0213:06
10:28
+0:22
24M
24.00 mi15:00:094:01:1110:0310:23
10:23
-0:05
40K
24.85 mi15:09:214:10:2310:049:12
10:46
+0:23
25.2M
25.20 mi15:13:234:14:2510:064:02
11:42
+0:56
Finish
26.22 mi15:23:564:24:5810:0710:33
10:21
-1:21

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

10:07 /mi

Slowest Pace

11:42 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:32:08

57% of race

Time at Steady Pace

1:28:32

33% of race

Time at Slower Pace

24:18

9% of race

Average Pace: 10:06 /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 mi11:28:3629:389:3229:38
9:32
#24367
10K
6.21 mi11:58:4959:519:3830:13
9:44
#24551
15K
9.32 mi12:29:191:30:219:4230:30
9:49
#24566
20K
12.43 mi13:00:102:01:129:4530:51
9:56
#24425
Half
13.11 mi13:06:482:07:509:456:38
9:43
#24412
25K
15.53 mi13:31:062:32:089:4824:18
10:01
#24238
30K
18.64 mi14:03:443:04:469:5532:38
10:30
#24000
20M
20.00 mi14:18:033:19:059:5714:19
10:32
#23889
21M
21.00 mi14:29:073:30:0910:0011:04
11:04
#23755
35K
21.75 mi14:36:403:37:4210:017:33
10:06
#23697
23M
23.00 mi14:49:463:50:4810:0213:06
10:28
#23560
24M
24.00 mi15:00:094:01:1110:0310:23
10:23
#23520
40K
24.85 mi15:09:214:10:2310:049:12
10:46
#23491
25.2M
25.20 mi15:13:234:14:2510:064:02
11:42
#23469
Finish
26.22 mi15:23:564:24:5810:0710:33
10:21
#23487
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF60-64Seg. OverallSeg. FemalesSeg. F60-64
5K3.11 mi3.11 mi243679884988424591(Top 87%)10003(Top 82%)10003(Top 1603%)
10K6.21 mi3.10 mi24551-1849977-939977-9324687(Top 87%)10062(Top 82%)10062(Top 1613%)
15K9.32 mi3.11 mi24566-159993-169993-1624591(Top 87%)10003(Top 82%)10003(Top 1603%)
20K12.43 mi3.11 mi24425+1419934+599934+5924091(Top 85%)9762(Top 80%)9762(Top 1564%)
Half13.11 mi0.68 mi24412+139923+119923+1124190(Top 85%)9810(Top 80%)9810(Top 1572%)
25K15.53 mi2.42 mi24238+1749842+819842+8123324(Top 82%)9378(Top 77%)9378(Top 1503%)
30K18.64 mi3.11 mi24000+2389728+1149728+11422956(Top 81%)9299(Top 76%)9299(Top 1490%)
20M20.00 mi1.36 mi23889+1119689+399689+3922546(Top 79%)9184(Top 75%)9184(Top 1472%)
21M21.00 mi1.00 mi23755+1349634+559634+5521605(Top 76%)8772(Top 72%)8772(Top 1406%)
35K21.75 mi0.75 mi23697+589613+219613+2122180(Top 78%)9131(Top 75%)9131(Top 1463%)
23M23.00 mi1.25 mi23560+1379558+559558+5521934(Top 77%)9034(Top 74%)9034(Top 1448%)
24M24.00 mi1.00 mi23520+409550+89550+822501(Top 79%)9395(Top 77%)9395(Top 1506%)
40K24.85 mi0.85 mi23491+299555-59555-522607(Top 80%)9508(Top 78%)9508(Top 1524%)
25.2M25.20 mi0.35 mi23469+229554+19554+122588(Top 80%)9464(Top 77%)9464(Top 1517%)
Finish26.22 mi1.02 mi23487-189580-269580-2623936(Top 84%)10139(Top 83%)10139(Top 1625%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 87%
×21story building
+97ft-345ft

Overall

24591

Females

10003

F60-64

10003

5K→10K

3.1 - 6.2 mi

Top 87%
×5story building
+79ft-138ft

Overall

24687

Females

10062

F60-64

10062

10K→15K

6.2 - 9.3 mi

Top 87%
×3story building
+67ft-78ft

Overall

24591

Females

10003

F60-64

10003

15K→20K

9.3 - 12.4 mi

Top 85%
×5story building
+106ft-86ft

Overall

24091

Females

9762

F60-64

9762

20K→Half

12.4 - 13.1 mi

Top 85%
×2story building
+19ft-37ft

Overall

24190

Females

9810

F60-64

9810

Half→25K

13.1 - 15.5 mi

Top 82%
×4story building
+66ft-88ft

Overall

23324

Females

9378

F60-64

9378

25K→30K

15.5 - 18.6 mi

Top 81%
×9story building
+181ft-148ft

Overall

22956

Females

9299

F60-64

9299

30K→20M

18.6 - 20.0 mi

Top 79%
×5story building
+64ft-50ft

Overall

22546

Females

9184

F60-64

9184

20M→21M

20.0 - 21.0 mi

Top 76%
×8story building
+106ft-24ft

Overall

21605

Females

8772

F60-64

8772

21M→35K

21.0 - 21.8 mi

Top 78%
×7story building
+17ft-86ft

Overall

22180

Females

9131

F60-64

9131

35K→23M

21.8 - 23.0 mi

Top 77%
×5story building
+23ft-63ft

Overall

21934

Females

9034

F60-64

9034

23M→24M

23.0 - 24.0 mi

Top 79%
×6story building
+12ft-82ft

Overall

22501

Females

9395

F60-64

9395

24M→40K

24.0 - 24.9 mi

Top 80%
×1story
+6ft-20ft

Overall

22607

Females

9508

F60-64

9508

40K→25.2M

24.9 - 25.2 mi

Top 80%
×1story
+13ft-16ft

Overall

22588

Females

9464

F60-64

9464

25.2M→Finish

25.2 - 26.2 mi

Top 84%
×2story building
+22ft-21ft

Overall

23936

Females

10139

F60-64

10139

Passing Analysis

Category:
Athletes Passed
1727
Passed By
847
Net Change
+880
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24367
5K → 10K143327-184#24367#24551
10K → 15K137152-15#24551#24566
15K → 20K20160+141#24566#24425
20K → Half3118+13#24425#24412
Half → 25K21844+174#24412#24238
25K → 30K28749+238#24238#24000
30K → 20M13827+111#24000#23889
20M → 21M15218+134#23889#23755
21M → 35K646+58#23755#23697
35K → 23M15013+137#23697#23560
23M → 24M6727+40#23560#23520
24M → 40K6132+29#23520#23491
40K → 25.2M4119+22#23491#23469
25.2M → Finish3755-18#23469#23487
TOTALS1727847+880
📊

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