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BOSTON MARATHON 2025

Shanshan Hu

Bib: 20675•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 47%
Masters (Masters Women)
#0 / 6759
Top 35%
Division (F40-44)
#0 / 1718
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:23
Rank: #17908
Start → 5K
25:23 | 8:10/mi
10K· 6.21 mi
51:18
Rank: #18349 (-441)
5K → 10K
25:55 | 8:21/mi
15K· 9.32 mi
1:18:44
Rank: #19340 (-991)
10K → 15K
27:26 | 8:50/mi
20K· 12.43 mi
1:45:29
Rank: #19190 (+150)
15K → 20K
26:45 | 8:37/mi
Half· 13.11 mi
1:51:17
Rank: #19189 (+1)
20K → Half
5:48 | 8:30/mi
25K· 15.53 mi
2:12:19
Rank: #19020 (+169)
Half → 25K
21:02 | 8:41/mi
30K· 18.64 mi
2:39:19
Rank: #18423 (+597)
25K → 30K
27:00 | 8:41/mi
20M
2:50:55
Rank: #18064 (+359)
30K → 20M
11:36 | 8:32/mi
21M
2:59:45
Rank: #17760 (+304)
20M → 21M
8:50 | 8:50/mi
35K· 21.75 mi
3:05:51
Rank: #17578 (+182)
21M → 35K
6:06 | 8:09/mi
23M
3:16:18
Rank: #17258 (+320)
35K → 23M
10:27 | 8:21/mi
24M
3:24:34
Rank: #17055 (+203)
23M → 24M
8:16 | 8:16/mi
40K· 24.85 mi
3:31:40
Rank: #16845 (+210)
24M → 40K
7:06 | 8:18/mi
25.2M
3:34:44
Rank: #16754 (+91)
40K → 25.2M
3:04 | 8:54/mi
Finish· 26.22 mi
3:42:40
Rank: #16536 (+218)
25.2M → Finish
7:56 | 7:47/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:51:17
Pace8:29 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:51:23
Pace8:30 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:5425:238:1025:23
8:10
-
10K
6.21 mi11:45:4951:188:1525:55
8:21
+0:11
15K
9.32 mi12:13:151:18:448:2727:26
8:50
+0:29
20K
12.43 mi12:40:001:45:298:2926:45
8:37
-0:13
Half
13.11 mi12:45:481:51:178:295:48
8:30
-0:07
25K
15.53 mi13:06:502:12:198:3121:02
8:41
+0:11
30K
18.64 mi13:33:502:39:198:3327:00
8:41
0:00
20M
20.00 mi13:45:262:50:558:3311:36
8:32
-0:09
21M
21.00 mi13:54:162:59:458:348:50
8:50
+0:18
35K
21.75 mi14:00:223:05:518:336:06
8:09
-0:41
23M
23.00 mi14:10:493:16:188:3210:27
8:21
+0:12
24M
24.00 mi14:19:053:24:348:318:16
8:16
-0:05
40K
24.85 mi14:26:113:31:408:317:06
8:18
+0:02
25.2M
25.20 mi14:29:153:34:448:313:04
8:54
+0:36
Finish
26.22 mi14:37:113:42:408:307:56
7:47
-1:07

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

7:47 /mi

Average Pace

8:30 /mi

Slowest Pace

8:54 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:48:33

49% of race

Time at Steady Pace

1:54:07

51% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:30 /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 mi11:19:5425:238:1025:23
8:10
#17908
10K
6.21 mi11:45:4951:188:1525:55
8:21
#18349
15K
9.32 mi12:13:151:18:448:2727:26
8:50
#19340
20K
12.43 mi12:40:001:45:298:2926:45
8:37
#19190
Half
13.11 mi12:45:481:51:178:295:48
8:30
#19189
25K
15.53 mi13:06:502:12:198:3121:02
8:41
#19020
30K
18.64 mi13:33:502:39:198:3327:00
8:41
#18423
20M
20.00 mi13:45:262:50:558:3311:36
8:32
#18064
21M
21.00 mi13:54:162:59:458:348:50
8:50
#17760
35K
21.75 mi14:00:223:05:518:336:06
8:09
#17578
23M
23.00 mi14:10:493:16:188:3210:27
8:21
#17258
24M
24.00 mi14:19:053:24:348:318:16
8:16
#17055
40K
24.85 mi14:26:113:31:408:317:06
8:18
#16845
25.2M
25.20 mi14:29:153:34:448:313:04
8:54
#16754
Finish
26.22 mi14:37:113:42:408:307:56
7:47
#16536
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi179086284628421177(Top 75%)8095(Top 66%)8095(Top 471%)
10K6.21 mi3.10 mi18349-4416532-2486532-24818825(Top 66%)6775(Top 55%)6775(Top 394%)
15K9.32 mi3.11 mi19340-9917085-5537085-55321177(Top 75%)8095(Top 66%)8095(Top 471%)
20K12.43 mi3.11 mi19190+1507011+747011+7418911(Top 67%)6863(Top 56%)6863(Top 399%)
Half13.11 mi0.68 mi19189+17017-67017-619212(Top 68%)7003(Top 57%)7003(Top 408%)
25K15.53 mi2.42 mi19020+1696927+906927+9018245(Top 64%)6558(Top 54%)6558(Top 382%)
30K18.64 mi3.11 mi18423+5976615+3126615+31215959(Top 56%)5441(Top 44%)5441(Top 317%)
20M20.00 mi1.36 mi18064+3596460+1556460+15514040(Top 49%)4543(Top 37%)4543(Top 264%)
21M21.00 mi1.00 mi17760+3046303+1576303+15712569(Top 44%)3916(Top 32%)3916(Top 228%)
35K21.75 mi0.75 mi17578+1826231+726231+7213379(Top 47%)4378(Top 36%)4378(Top 255%)
23M23.00 mi1.25 mi17258+3206089+1426089+14212367(Top 44%)3950(Top 32%)3950(Top 230%)
24M24.00 mi1.00 mi17055+2035991+985991+9813085(Top 46%)4376(Top 36%)4376(Top 255%)
40K24.85 mi0.85 mi16845+2105902+895902+8912233(Top 43%)4055(Top 33%)4055(Top 236%)
25.2M25.20 mi0.35 mi16754+915861+415861+4111318(Top 40%)3692(Top 30%)3692(Top 215%)
Finish26.22 mi1.02 mi16536+2185749+1125749+11211382(Top 40%)3668(Top 30%)3668(Top 214%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 75%
×21stories
+97ft-345ft

Overall

21177

Females

8095

F40-44

8095

5K→10K

3.1 - 6.2 mi

Top 66%
×5stories
+79ft-138ft

Overall

18825

Females

6775

F40-44

6775

10K→15K

6.2 - 9.3 mi

Top 75%
×3stories
+67ft-78ft

Overall

21177

Females

8095

F40-44

8095

15K→20K

9.3 - 12.4 mi

Top 67%
×5stories
+106ft-86ft

Overall

18911

Females

6863

F40-44

6863

20K→Half

12.4 - 13.1 mi

Top 68%
×2stories
+19ft-37ft

Overall

19212

Females

7003

F40-44

7003

Half→25K

13.1 - 15.5 mi

Top 64%
×4stories
+66ft-88ft

Overall

18245

Females

6558

F40-44

6558

25K→30K

15.5 - 18.6 mi

Top 56%
×9stories
+181ft-148ft

Overall

15959

Females

5441

F40-44

5441

30K→20M

18.6 - 20.0 mi

Top 49%
×5stories
+64ft-50ft

Overall

14040

Females

4543

F40-44

4543

20M→21M

20.0 - 21.0 mi

Top 44%
×8stories
+106ft-24ft

Overall

12569

Females

3916

F40-44

3916

21M→35K

21.0 - 21.8 mi

Top 47%
×7stories
+17ft-86ft

Overall

13379

Females

4378

F40-44

4378

35K→23M

21.8 - 23.0 mi

Top 44%
×5stories
+23ft-63ft

Overall

12367

Females

3950

F40-44

3950

23M→24M

23.0 - 24.0 mi

Top 46%
×6stories
+12ft-82ft

Overall

13085

Females

4376

F40-44

4376

24M→40K

24.0 - 24.9 mi

Top 43%
×1story
+6ft-20ft

Overall

12233

Females

4055

F40-44

4055

40K→25.2M

24.9 - 25.2 mi

Top 40%
×1story
+13ft-16ft

Overall

11318

Females

3692

F40-44

3692

25.2M→Finish

25.2 - 26.2 mi

Top 40%
×2stories
+22ft-21ft

Overall

11382

Females

3668

F40-44

3668

Passing Analysis

Category:
Athletes Passed
3248
Passed By
1876
Net Change
+1372
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17908
5K → 10K125566-441#17908#18349
10K → 15K311022-991#18349#19340
15K → 20K266116+150#19340#19190
20K → Half3837+1#19190#19189
Half → 25K24778+169#19189#19020
25K → 30K61619+597#19020#18423
30K → 20M3645+359#18423#18064
20M → 21M3062+304#18064#17760
21M → 35K1820+182#17760#17578
35K → 23M3277+320#17578#17258
23M → 24M2096+203#17258#17055
24M → 40K2166+210#17055#16845
40K → 25.2M932+91#16845#16754
25.2M → Finish22810+218#16754#16536
TOTALS32481876+1372
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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