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BOSTON MARATHON 2025

Joanna Sandolo

Bib: 23521•F

NY

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F50-54)
#0 / 1303
Top 50%
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
8:14/mi
25:34
↑ 97↓ 3451.5%
10K· 6.21 mi
8:23/mi
51:38
↑ 79↓ 1380.4%
15K· 9.32 mi
8:18/mi
1:17:24
↑ 67↓ 78
20K· 12.43 mi
8:19/mi
1:43:14
↑ 106↓ 860.1%
Half· 13.11 mi
8:17/mi
1:48:53
↑ 19↓ 370.5%
25K· 15.53 mi
9:21/mi
2:11:32
↑ 66↓ 880.2%
30K· 18.64 mi
9:29/mi
2:41:01
↑ 181↓ 1480.2%
20M
10:06/mi
2:54:45
↑ 64↓ 500.2%
21M
11:24/mi
3:06:09
↑ 106↓ 241.6%
35K· 21.75 mi
8:28/mi
3:12:29
↑ 17↓ 861.7%
23M
9:25/mi
3:24:16
↑ 23↓ 630.6%
24M
9:15/mi
3:33:31
↓ 821.3%
40K· 24.85 mi
9:48/mi
3:41:54
↓ 200.3%
25.2M
10:38/mi
3:45:34
↑ 13↓ 160.2%
Finish· 26.22 mi
8:35/mi
3:54:19
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:48:53
Pace8:18 /mi
2nd Half
Distance13.11 mi
Time2:05:26
Pace9:34 /mi
📊Positive Split: 15.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:24:2125:348:1425:34
8:14
-
10K
6.21 mi11:50:2551:388:1926:04
8:23
+0:09
15K
9.32 mi12:16:111:17:248:1825:46
8:18
-0:05
20K
12.43 mi12:42:011:43:148:1825:50
8:19
+0:01
Half
13.11 mi12:47:401:48:538:185:39
8:17
-0:02
25K
15.53 mi13:10:192:11:328:2822:39
9:21
+1:04
30K
18.64 mi13:39:482:41:018:3829:29
9:29
+0:08
20M
20.00 mi13:53:322:54:458:4413:44
10:06
+0:37
21M
21.00 mi14:04:563:06:098:5211:24
11:24
+1:18
35K
21.75 mi14:11:163:12:298:516:20
8:28
-2:56
23M
23.00 mi14:23:033:24:168:5311:47
9:25
+0:57
24M
24.00 mi14:32:183:33:318:549:15
9:15
-0:10
40K
24.85 mi14:40:413:41:548:568:23
9:48
+0:33
25.2M
25.20 mi14:44:213:45:348:573:40
10:38
+0:50
Finish
26.22 mi14:53:063:54:198:578:45
8:35
-2:03

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

8:14 /mi

Average Pace

8:57 /mi

Slowest Pace

11:24 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:03:58

53% of race

Time at Steady Pace

1:13:10

31% of race

Time at Slower Pace

37:11

16% of race

Average Pace: 8:56 /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 mi11:24:2125:348:1425:34
8:14
#18301
10K
6.21 mi11:50:2551:388:1926:04
8:23
#18681
15K
9.32 mi12:16:111:17:248:1825:46
8:18
#18433
20K
12.43 mi12:42:011:43:148:1825:50
8:19
#18039
Half
13.11 mi12:47:401:48:538:185:39
8:17
#18019
25K
15.53 mi13:10:192:11:328:2822:39
9:21
#18713
30K
18.64 mi13:39:482:41:018:3829:29
9:29
#18972
20M
20.00 mi13:53:322:54:458:4413:44
10:06
#19223
21M
21.00 mi14:04:563:06:098:5211:24
11:24
#19510
35K
21.75 mi14:11:163:12:298:516:20
8:28
#19379
23M
23.00 mi14:23:033:24:168:5311:47
9:25
#19313
24M
24.00 mi14:32:183:33:318:549:15
9:15
#19278
40K
24.85 mi14:40:413:41:548:568:23
9:48
#19309
25.2M
25.20 mi14:44:213:45:348:573:40
10:38
#19304
Finish
26.22 mi14:53:063:54:198:578:45
8:35
#19207
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi183016529652918022(Top 63%)6333(Top 52%)6333(Top 486%)
10K6.21 mi3.10 mi18681-3806728-1996728-19919132(Top 67%)6963(Top 57%)6963(Top 534%)
15K9.32 mi3.11 mi18433+2486586+1426586+14218022(Top 63%)6333(Top 52%)6333(Top 486%)
20K12.43 mi3.11 mi18039+3946354+2326354+23217026(Top 60%)5793(Top 47%)5793(Top 445%)
Half13.11 mi0.68 mi18019+206350+46350+417892(Top 63%)6271(Top 51%)6271(Top 481%)
25K15.53 mi2.42 mi18713-6946752-4026752-40221337(Top 75%)8272(Top 68%)8272(Top 635%)
30K18.64 mi3.11 mi18972-2596933-1816933-18119897(Top 70%)7604(Top 62%)7604(Top 584%)
20M20.00 mi1.36 mi19223-2517108-1757108-17521302(Top 75%)8516(Top 70%)8516(Top 654%)
21M21.00 mi1.00 mi19510-2877291-1837291-18322401(Top 79%)9190(Top 75%)9190(Top 705%)
35K21.75 mi0.75 mi19379+1317238+537238+5315326(Top 54%)5437(Top 44%)5437(Top 417%)
23M23.00 mi1.25 mi19313+667229+97229+918300(Top 64%)7137(Top 58%)7137(Top 548%)
24M24.00 mi1.00 mi19278+357236-77236-718605(Top 66%)7346(Top 60%)7346(Top 564%)
40K24.85 mi0.85 mi19309-317267-317267-3119838(Top 70%)8062(Top 66%)8062(Top 619%)
25.2M25.20 mi0.35 mi19304+57280-137280-1319518(Top 69%)7905(Top 65%)7905(Top 607%)
Finish26.22 mi1.02 mi19207+977251+297251+2916798(Top 59%)6459(Top 53%)6459(Top 496%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 63%
×21story building
+97ft-345ft

Overall

18022

Females

6333

F50-54

6333

5K→10K

3.1 - 6.2 mi

Top 67%
×5story building
+79ft-138ft

Overall

19132

Females

6963

F50-54

6963

10K→15K

6.2 - 9.3 mi

Top 63%
×3story building
+67ft-78ft

Overall

18022

Females

6333

F50-54

6333

15K→20K

9.3 - 12.4 mi

Top 60%
×5story building
+106ft-86ft

Overall

17026

Females

5793

F50-54

5793

20K→Half

12.4 - 13.1 mi

Top 63%
×2story building
+19ft-37ft

Overall

17892

Females

6271

F50-54

6271

Half→25K

13.1 - 15.5 mi

Top 75%
×4story building
+66ft-88ft

Overall

21337

Females

8272

F50-54

8272

25K→30K

15.5 - 18.6 mi

Top 70%
×9story building
+181ft-148ft

Overall

19897

Females

7604

F50-54

7604

30K→20M

18.6 - 20.0 mi

Top 75%
×5story building
+64ft-50ft

Overall

21302

Females

8516

F50-54

8516

20M→21M

20.0 - 21.0 mi

Top 79%
×8story building
+106ft-24ft

Overall

22401

Females

9190

F50-54

9190

21M→35K

21.0 - 21.8 mi

Top 54%
×7story building
+17ft-86ft

Overall

15326

Females

5437

F50-54

5437

35K→23M

21.8 - 23.0 mi

Top 64%
×5story building
+23ft-63ft

Overall

18300

Females

7137

F50-54

7137

23M→24M

23.0 - 24.0 mi

Top 66%
×6story building
+12ft-82ft

Overall

18605

Females

7346

F50-54

7346

24M→40K

24.0 - 24.9 mi

Top 70%
×1story
+6ft-20ft

Overall

19838

Females

8062

F50-54

8062

40K→25.2M

24.9 - 25.2 mi

Top 69%
×1story
+13ft-16ft

Overall

19518

Females

7905

F50-54

7905

25.2M→Finish

25.2 - 26.2 mi

Top 59%
×2story building
+22ft-21ft

Overall

16798

Females

6459

F50-54

6459

Passing Analysis

Category:
Athletes Passed
1752
Passed By
2658
Net Change
-906
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18301
5K → 10K125505-380#18301#18681
10K → 15K32577+248#18681#18433
15K → 20K43036+394#18433#18039
20K → Half4525+20#18039#18019
Half → 25K35729-694#18019#18713
25K → 30K162421-259#18713#18972
30K → 20M47298-251#18972#19223
20M → 21M35322-287#19223#19510
21M → 35K1387+131#19510#19379
35K → 23M12559+66#19379#19313
23M → 24M8247+35#19313#19278
24M → 40K5384-31#19278#19309
40K → 25.2M3732+5#19309#19304
25.2M → Finish11316+97#19304#19207
TOTALS17522658-906
📊

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