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BOSTON MARATHON 2025

Julia Bae

ON

Bib: 21957 F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F45-49)
#0 / 1813
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
8:47/mi
27:17
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
8:47/mi
54:33
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
8:35/mi
1:21:14
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
8:24/mi
1:47:21
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
8:20/mi
1:53:02
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
8:27/mi
2:13:31
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
9:42/mi
2:43:39
↑ 181↓ 1480.2%
138 ft elev
20M
9:04/mi
2:55:58
↑ 64↓ 500.2%
148 ft elev
21M
9:36/mi
3:05:34
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
9:04/mi
3:12:21
↑ 17↓ 861.7%
156 ft elev
23M
11:08/mi
3:26:17
↑ 23↓ 630.6%
116 ft elev
24M
9:58/mi
3:36:15
↓ 821.3%
34 ft elev
40K· 24.85 mi
9:31/mi
3:44:23
↓ 200.3%
20 ft elev
25.2M
10:18/mi
3:47:56
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
8:26/mi
3:56:32
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

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A one-of-a-kind AI Race Performance Report that reads your race like a coach. A plain-English story of how you raced, where you surged and faded, and what it all means. Emailed to you, free.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:53:02
Pace8:37 /mi
2nd Half
Distance13.11 mi
Time2:03:30
Pace9:25 /mi
📊Positive Split: 9.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:22:0227:178:4727:17
8:47
-
10K
6.21 mi11:49:1854:338:4727:16
8:47
0:00
15K
9.32 mi12:15:591:21:148:4326:41
8:35
-0:12
20K
12.43 mi12:42:061:47:218:3826:07
8:24
-0:11
Half
13.11 mi12:47:471:53:028:375:41
8:20
-0:04
25K
15.53 mi13:08:162:13:318:3620:29
8:27
+0:07
30K
18.64 mi13:38:242:43:398:4730:08
9:42
+1:15
20M
20.00 mi13:50:432:55:588:4812:19
9:04
-0:38
21M
21.00 mi14:00:193:05:348:509:36
9:36
+0:32
35K
21.75 mi14:07:063:12:218:516:47
9:04
-0:32
23M
23.00 mi14:21:023:26:178:5813:56
11:08
+2:04
24M
24.00 mi14:31:003:36:159:019:58
9:58
-1:10
40K
24.85 mi14:39:083:44:239:028:08
9:31
-0:27
25.2M
25.20 mi14:42:413:47:569:033:33
10:18
+0:47
Finish
26.22 mi14:51:173:56:329:028:36
8:26
-1:52

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

8:20 /mi

Average Pace

9:02 /mi

Slowest Pace

11:08 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:27:34

37% of race

Time at Steady Pace

1:13:39

31% of race

Time at Slower Pace

1:15:19

32% of race

Average Pace: 9:01 /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 mi11:22:0227:178:4727:17
8:47
#21415
10K
6.21 mi11:49:1854:338:4727:16
8:47
#21340
15K
9.32 mi12:15:591:21:148:4326:41
8:35
#20832
20K
12.43 mi12:42:061:47:218:3826:07
8:24
#20080
Half
13.11 mi12:47:471:53:028:375:41
8:20
#19983
25K
15.53 mi13:08:162:13:318:3620:29
8:27
#19474
30K
18.64 mi13:38:242:43:398:4730:08
9:42
#19744
20M
20.00 mi13:50:432:55:588:4812:19
9:04
#19553
21M
21.00 mi14:00:193:05:348:509:36
9:36
#19370
35K
21.75 mi14:07:063:12:218:516:47
9:04
#19342
23M
23.00 mi14:21:023:26:178:5813:56
11:08
#19748
24M
24.00 mi14:31:003:36:159:019:58
9:58
#19857
40K
24.85 mi14:39:083:44:239:028:08
9:31
#19809
25.2M
25.20 mi14:42:413:47:569:033:33
10:18
#19793
Finish
26.22 mi14:51:173:56:329:028:36
8:26
#19665
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi214158308830819874(Top 70%)7375(Top 60%)7375(Top 407%)
10K6.21 mi3.10 mi21340+758241+678241+6721296(Top 75%)8193(Top 67%)8193(Top 452%)
15K9.32 mi3.11 mi20832+5087946+2957946+29519874(Top 70%)7375(Top 60%)7375(Top 407%)
20K12.43 mi3.11 mi20080+7527515+4317515+43117608(Top 62%)6120(Top 50%)6120(Top 338%)
Half13.11 mi0.68 mi19983+977467+487467+4818211(Top 64%)6461(Top 53%)6461(Top 356%)
25K15.53 mi2.42 mi19474+5097186+2817186+28116889(Top 59%)5800(Top 47%)5800(Top 320%)
30K18.64 mi3.11 mi19744-2707378-1927378-19220692(Top 73%)8045(Top 66%)8045(Top 444%)
20M20.00 mi1.36 mi19553+1917293+857293+8517174(Top 60%)6245(Top 51%)6245(Top 344%)
21M21.00 mi1.00 mi19370+1837217+767217+7616585(Top 58%)6031(Top 49%)6031(Top 333%)
35K21.75 mi0.75 mi19342+287213+47213+418599(Top 65%)7253(Top 59%)7253(Top 400%)
23M23.00 mi1.25 mi19748-4067482-2697482-26923518(Top 83%)9854(Top 81%)9854(Top 544%)
24M24.00 mi1.00 mi19857-1097572-907572-9021278(Top 75%)8736(Top 71%)8736(Top 482%)
40K24.85 mi0.85 mi19809+487560+127560+1218785(Top 66%)7523(Top 62%)7523(Top 415%)
25.2M25.20 mi0.35 mi19793+167555+57555+518318(Top 64%)7306(Top 60%)7306(Top 403%)
Finish26.22 mi1.02 mi19665+1287499+567499+5615878(Top 56%)5967(Top 49%)5967(Top 329%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 70%
×21story building
+97ft-345ft

Overall

19874

Females

7375

F45-49

7375

5K→10K

3.1 - 6.2 mi

Top 75%
×5story building
+79ft-138ft

Overall

21296

Females

8193

F45-49

8193

10K→15K

6.2 - 9.3 mi

Top 70%
×3story building
+67ft-78ft

Overall

19874

Females

7375

F45-49

7375

15K→20K

9.3 - 12.4 mi

Top 62%
×5story building
+106ft-86ft

Overall

17608

Females

6120

F45-49

6120

20K→Half

12.4 - 13.1 mi

Top 64%
×2story building
+19ft-37ft

Overall

18211

Females

6461

F45-49

6461

Half→25K

13.1 - 15.5 mi

Top 59%
×4story building
+66ft-88ft

Overall

16889

Females

5800

F45-49

5800

25K→30K

15.5 - 18.6 mi

Top 73%
×9story building
+181ft-148ft

Overall

20692

Females

8045

F45-49

8045

30K→20M

18.6 - 20.0 mi

Top 60%
×5story building
+64ft-50ft

Overall

17174

Females

6245

F45-49

6245

20M→21M

20.0 - 21.0 mi

Top 58%
×8story building
+106ft-24ft

Overall

16585

Females

6031

F45-49

6031

21M→35K

21.0 - 21.8 mi

Top 65%
×7story building
+17ft-86ft

Overall

18599

Females

7253

F45-49

7253

35K→23M

21.8 - 23.0 mi

Top 83%
×5story building
+23ft-63ft

Overall

23518

Females

9854

F45-49

9854

23M→24M

23.0 - 24.0 mi

Top 75%
×6story building
+12ft-82ft

Overall

21278

Females

8736

F45-49

8736

24M→40K

24.0 - 24.9 mi

Top 66%
×1story
+6ft-20ft

Overall

18785

Females

7523

F45-49

7523

40K→25.2M

24.9 - 25.2 mi

Top 64%
×1story
+13ft-16ft

Overall

18318

Females

7306

F45-49

7306

25.2M→Finish

25.2 - 26.2 mi

Top 56%
×2story building
+22ft-21ft

Overall

15878

Females

5967

F45-49

5967

Passing Analysis

Category:
Athletes Passed
3149
Passed By
1399
Net Change
+1750
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21415
5K → 10K320245+75#21415#21340
10K → 15K54133+508#21340#20832
15K → 20K7575+752#20832#20080
20K → Half981+97#20080#19983
Half → 25K5145+509#19983#19474
25K → 30K146416-270#19474#19744
30K → 20M20615+191#19744#19553
20M → 21M19916+183#19553#19370
21M → 35K5729+28#19370#19342
35K → 23M20426-406#19342#19748
23M → 24M43152-109#19748#19857
24M → 40K7527+48#19857#19809
40K → 25.2M3317+16#19809#19793
25.2M → Finish14012+128#19793#19665
TOTALS31491399+1750
📊

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