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BOSTON MARATHON 2025

Julie Blair

Bib: 18177•F

OH

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 46%
Masters (Masters Women)
#0 / 6759
Top 34%
Division (F45-49)
#0 / 1813
Top 42%
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
7:49/mi
24:16
↑ 97↓ 3451.5%
10K· 6.21 mi
7:48/mi
48:30
↑ 79↓ 1380.4%
15K· 9.32 mi
7:50/mi
1:12:50
↑ 67↓ 78
20K· 12.43 mi
7:52/mi
1:37:16
↑ 106↓ 860.1%
Half· 13.11 mi
7:46/mi
1:42:34
↑ 19↓ 370.5%
25K· 15.53 mi
8:55/mi
2:04:10
↑ 66↓ 880.2%
30K· 18.64 mi
9:13/mi
2:32:48
↑ 181↓ 1480.2%
20M
9:14/mi
2:45:21
↑ 64↓ 500.2%
21M
10:15/mi
2:55:36
↑ 106↓ 241.6%
35K· 21.75 mi
8:29/mi
3:01:57
↑ 17↓ 861.7%
23M
9:22/mi
3:13:41
↑ 23↓ 630.6%
24M
8:55/mi
3:22:36
↓ 821.3%
40K· 24.85 mi
9:07/mi
3:30:24
↓ 200.3%
25.2M
10:35/mi
3:34:03
↑ 13↓ 160.2%
Finish· 26.22 mi
8:03/mi
3:42:15
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:42:34
Pace7:49 /mi
2nd Half
Distance13.11 mi
Time1:59:41
Pace9:08 /mi
📊Positive Split: 16.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:4824:167:4924:16
7:49
-
10K
6.21 mi11:40:0248:307:4824:14
7:48
-0:01
15K
9.32 mi12:04:221:12:507:4924:20
7:50
+0:02
20K
12.43 mi12:28:481:37:167:5024:26
7:52
+0:02
Half
13.11 mi12:34:061:42:347:495:18
7:46
-0:06
25K
15.53 mi12:55:422:04:108:0021:36
8:55
+1:09
30K
18.64 mi13:24:202:32:488:1228:38
9:13
+0:18
20M
20.00 mi13:36:532:45:218:1612:33
9:14
+0:01
21M
21.00 mi13:47:082:55:368:2210:15
10:15
+1:01
35K
21.75 mi13:53:293:01:578:226:21
8:29
-1:46
23M
23.00 mi14:05:133:13:418:2511:44
9:22
+0:53
24M
24.00 mi14:14:083:22:368:278:55
8:55
-0:27
40K
24.85 mi14:21:563:30:248:287:48
9:07
+0:12
25.2M
25.20 mi14:25:353:34:038:303:39
10:35
+1:28
Finish
26.22 mi14:33:473:42:158:298:12
8:03
-2:32

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

7:46 /mi

Average Pace

8:29 /mi

Slowest Pace

10:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:50:46

50% of race

Time at Steady Pace

1:25:51

39% of race

Time at Slower Pace

25:38

12% of race

Average Pace: 8:29 /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 mi11:15:4824:167:4924:16
7:49
#14924
10K
6.21 mi11:40:0248:307:4824:14
7:48
#14849
15K
9.32 mi12:04:221:12:507:4924:20
7:50
#14769
20K
12.43 mi12:28:481:37:167:5024:26
7:52
#14473
Half
13.11 mi12:34:061:42:347:495:18
7:46
#14434
25K
15.53 mi12:55:422:04:108:0021:36
8:55
#15502
30K
18.64 mi13:24:202:32:488:1228:38
9:13
#16190
20M
20.00 mi13:36:532:45:218:1612:33
9:14
#16300
21M
21.00 mi13:47:082:55:368:2210:15
10:15
#16471
35K
21.75 mi13:53:293:01:578:226:21
8:29
#16394
23M
23.00 mi14:05:133:13:418:2511:44
9:22
#16470
24M
24.00 mi14:14:083:22:368:278:55
8:55
#16494
40K
24.85 mi14:21:563:30:248:287:48
9:07
#16506
25.2M
25.20 mi14:25:353:34:038:303:39
10:35
#16578
Finish
26.22 mi14:33:473:42:158:298:12
8:03
#16426
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi149244483448314674(Top 52%)4405(Top 36%)4405(Top 243%)
10K6.21 mi3.10 mi14849+754463+204463+2014827(Top 52%)4446(Top 36%)4446(Top 245%)
15K9.32 mi3.11 mi14769+804414+494414+4914674(Top 52%)4405(Top 36%)4405(Top 243%)
20K12.43 mi3.11 mi14473+2964274+1404274+14013816(Top 49%)3997(Top 33%)3997(Top 220%)
Half13.11 mi0.68 mi14434+394256+184256+1814106(Top 50%)4139(Top 34%)4139(Top 228%)
25K15.53 mi2.42 mi15502-10684890-6344890-63419473(Top 69%)7239(Top 59%)7239(Top 399%)
30K18.64 mi3.11 mi16190-6885332-4425332-44218715(Top 66%)6958(Top 57%)6958(Top 384%)
20M20.00 mi1.36 mi16300-1105434-1025434-10217957(Top 63%)6686(Top 55%)6686(Top 369%)
21M21.00 mi1.00 mi16471-1715569-1355569-13519195(Top 68%)7430(Top 61%)7430(Top 410%)
35K21.75 mi0.75 mi16394+775539+305539+3015431(Top 54%)5487(Top 45%)5487(Top 303%)
23M23.00 mi1.25 mi16470-765615-765615-7618115(Top 64%)7039(Top 58%)7039(Top 388%)
24M24.00 mi1.00 mi16494-245657-425657-4216944(Top 60%)6468(Top 53%)6468(Top 357%)
40K24.85 mi0.85 mi16506-125693-365693-3616985(Top 60%)6568(Top 54%)6568(Top 362%)
25.2M25.20 mi0.35 mi16578-725748-555748-5519313(Top 68%)7801(Top 64%)7801(Top 430%)
Finish26.22 mi1.02 mi16426+1525684+645684+6413242(Top 47%)4582(Top 37%)4582(Top 253%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 52%
×21story building
+97ft-345ft

Overall

14674

Females

4405

F45-49

4405

5K→10K

3.1 - 6.2 mi

Top 52%
×5story building
+79ft-138ft

Overall

14827

Females

4446

F45-49

4446

10K→15K

6.2 - 9.3 mi

Top 52%
×3story building
+67ft-78ft

Overall

14674

Females

4405

F45-49

4405

15K→20K

9.3 - 12.4 mi

Top 49%
×5story building
+106ft-86ft

Overall

13816

Females

3997

F45-49

3997

20K→Half

12.4 - 13.1 mi

Top 50%
×2story building
+19ft-37ft

Overall

14106

Females

4139

F45-49

4139

Half→25K

13.1 - 15.5 mi

Top 69%
×4story building
+66ft-88ft

Overall

19473

Females

7239

F45-49

7239

25K→30K

15.5 - 18.6 mi

Top 66%
×9story building
+181ft-148ft

Overall

18715

Females

6958

F45-49

6958

30K→20M

18.6 - 20.0 mi

Top 63%
×5story building
+64ft-50ft

Overall

17957

Females

6686

F45-49

6686

20M→21M

20.0 - 21.0 mi

Top 68%
×8story building
+106ft-24ft

Overall

19195

Females

7430

F45-49

7430

21M→35K

21.0 - 21.8 mi

Top 54%
×7story building
+17ft-86ft

Overall

15431

Females

5487

F45-49

5487

35K→23M

21.8 - 23.0 mi

Top 64%
×5story building
+23ft-63ft

Overall

18115

Females

7039

F45-49

7039

23M→24M

23.0 - 24.0 mi

Top 60%
×6story building
+12ft-82ft

Overall

16944

Females

6468

F45-49

6468

24M→40K

24.0 - 24.9 mi

Top 60%
×1story
+6ft-20ft

Overall

16985

Females

6568

F45-49

6568

40K→25.2M

24.9 - 25.2 mi

Top 68%
×1story
+13ft-16ft

Overall

19313

Females

7801

F45-49

7801

25.2M→Finish

25.2 - 26.2 mi

Top 47%
×2story building
+22ft-21ft

Overall

13242

Females

4582

F45-49

4582

Passing Analysis

Category:
Athletes Passed
1745
Passed By
3247
Net Change
-1502
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14924
5K → 10K319244+75#14924#14849
10K → 15K241161+80#14849#14769
15K → 20K35963+296#14769#14473
20K → Half5718+39#14473#14434
Half → 25K271095-1068#14434#15502
25K → 30K82770-688#15502#16190
30K → 20M75185-110#16190#16300
20M → 21M65236-171#16300#16471
21M → 35K10023+77#16471#16394
35K → 23M96172-76#16394#16470
23M → 24M6791-24#16470#16494
24M → 40K7183-12#16494#16506
40K → 25.2M1688-72#16506#16578
25.2M → Finish17018+152#16578#16426
TOTALS17453247-1502
📊

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