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BOSTON MARATHON 2025

Carolyn Qi

Bib: 17763•F

WA

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Division (F18-39)
#0 / 5469
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
7:55/mi
24:36
↑ 97↓ 3451.5%
10K· 6.21 mi
7:42/mi
48:32
↑ 79↓ 1380.4%
15K· 9.32 mi
7:49/mi
1:12:49
↑ 67↓ 78
20K· 12.43 mi
8:16/mi
1:38:31
↑ 106↓ 860.1%
Half· 13.11 mi
8:14/mi
1:44:08
↑ 19↓ 370.5%
25K· 15.53 mi
8:43/mi
2:05:16
↑ 66↓ 880.2%
30K· 18.64 mi
9:07/mi
2:33:35
↑ 181↓ 1480.2%
20M
9:04/mi
2:45:54
↑ 64↓ 500.2%
21M
9:35/mi
2:55:29
↑ 106↓ 241.6%
35K· 21.75 mi
8:41/mi
3:01:59
↑ 17↓ 861.7%
23M
8:54/mi
3:13:08
↑ 23↓ 630.6%
24M
8:51/mi
3:21:59
↓ 821.3%
40K· 24.85 mi
8:56/mi
3:29:37
↓ 200.3%
25.2M
10:38/mi
3:33:17
↑ 13↓ 160.2%
Finish· 26.22 mi
18:03/mi
3:51:41
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:08
Pace7:57 /mi
2nd Half
Distance13.11 mi
Time2:07:33
Pace9:44 /mi
📊Positive Split: 22.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:4124:367:5524:36
7:55
-
10K
6.21 mi11:39:3748:327:4923:56
7:42
-0:13
15K
9.32 mi12:03:541:12:497:4924:17
7:49
+0:07
20K
12.43 mi12:29:361:38:317:5625:42
8:16
+0:27
Half
13.11 mi12:35:131:44:087:575:37
8:14
-0:02
25K
15.53 mi12:56:212:05:168:0421:08
8:43
+0:29
30K
18.64 mi13:24:402:33:358:1428:19
9:07
+0:24
20M
20.00 mi13:36:592:45:548:1812:19
9:04
-0:03
21M
21.00 mi13:46:342:55:298:219:35
9:35
+0:31
35K
21.75 mi13:53:043:01:598:226:30
8:41
-0:54
23M
23.00 mi14:04:133:13:088:2411:09
8:54
+0:13
24M
24.00 mi14:13:043:21:598:258:51
8:51
-0:03
40K
24.85 mi14:20:423:29:378:267:38
8:56
+0:05
25.2M
25.20 mi14:24:223:33:178:283:40
10:38
+1:42
Finish
26.22 mi14:42:463:51:418:5118:24
18:03
+7:25

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

7:42 /mi

Average Pace

8:51 /mi

Slowest Pace

18:03 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

3:29:37

90% of race

Time at Slower Pace

22:04

10% of race

Average Pace: 8:50 /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 mi11:15:4124:367:5524:36
7:55
#15913
10K
6.21 mi11:39:3748:327:4923:56
7:42
#14889
15K
9.32 mi12:03:541:12:497:4924:17
7:49
#14747
20K
12.43 mi12:29:361:38:317:5625:42
8:16
#15355
Half
13.11 mi12:35:131:44:087:575:37
8:14
#15484
25K
15.53 mi12:56:212:05:168:0421:08
8:43
#16061
30K
18.64 mi13:24:402:33:358:1428:19
9:07
#16454
20M
20.00 mi13:36:592:45:548:1812:19
9:04
#16478
21M
21.00 mi13:46:342:55:298:219:35
9:35
#16432
35K
21.75 mi13:53:043:01:598:226:30
8:41
#16401
23M
23.00 mi14:04:133:13:088:2411:09
8:54
#16321
24M
24.00 mi14:13:043:21:598:258:51
8:51
#16309
40K
24.85 mi14:20:423:29:378:267:38
8:56
#16301
25.2M
25.20 mi14:24:223:33:178:283:40
10:38
#16376
Finish
26.22 mi14:42:463:51:418:5118:24
18:03
#18681
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi159135097509714537(Top 51%)4338(Top 35%)4338(Top 79%)
10K6.21 mi3.10 mi14889+10244487+6104487+61013946(Top 49%)3933(Top 32%)3933(Top 72%)
15K9.32 mi3.11 mi14747+1424402+854402+8514537(Top 51%)4338(Top 35%)4338(Top 79%)
20K12.43 mi3.11 mi15355-6084783-3814783-38116789(Top 59%)5663(Top 46%)5663(Top 104%)
Half13.11 mi0.68 mi15484-1294853-704853-7017567(Top 62%)6093(Top 50%)6093(Top 111%)
25K15.53 mi2.42 mi16061-5775198-3455198-34518508(Top 65%)6709(Top 55%)6709(Top 123%)
30K18.64 mi3.11 mi16454-3935500-3025500-30218252(Top 64%)6718(Top 55%)6718(Top 123%)
20M20.00 mi1.36 mi16478-245543-435543-4317167(Top 60%)6238(Top 51%)6238(Top 114%)
21M21.00 mi1.00 mi16432+465547-45547-416493(Top 58%)5981(Top 49%)5981(Top 109%)
35K21.75 mi0.75 mi16401+315544+35544+316671(Top 59%)6167(Top 50%)6167(Top 113%)
23M23.00 mi1.25 mi16321+805530+145530+1415740(Top 55%)5749(Top 47%)5749(Top 105%)
24M24.00 mi1.00 mi16309+125554-245554-2416621(Top 59%)6283(Top 51%)6283(Top 115%)
40K24.85 mi0.85 mi16301+85578-245578-2415939(Top 56%)6019(Top 49%)6019(Top 110%)
25.2M25.20 mi0.35 mi16376-755631-535631-5319509(Top 69%)7896(Top 65%)7896(Top 144%)
Finish26.22 mi1.02 mi18681-23056947-13166947-131628373(Top 100%)12216(Top 100%)12216(Top 223%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 51%
×21story building
+97ft-345ft

Overall

14537

Females

4338

F18-39

4338

5K→10K

3.1 - 6.2 mi

Top 49%
×5story building
+79ft-138ft

Overall

13946

Females

3933

F18-39

3933

10K→15K

6.2 - 9.3 mi

Top 51%
×3story building
+67ft-78ft

Overall

14537

Females

4338

F18-39

4338

15K→20K

9.3 - 12.4 mi

Top 59%
×5story building
+106ft-86ft

Overall

16789

Females

5663

F18-39

5663

20K→Half

12.4 - 13.1 mi

Top 62%
×2story building
+19ft-37ft

Overall

17567

Females

6093

F18-39

6093

Half→25K

13.1 - 15.5 mi

Top 65%
×4story building
+66ft-88ft

Overall

18508

Females

6709

F18-39

6709

25K→30K

15.5 - 18.6 mi

Top 64%
×9story building
+181ft-148ft

Overall

18252

Females

6718

F18-39

6718

30K→20M

18.6 - 20.0 mi

Top 60%
×5story building
+64ft-50ft

Overall

17167

Females

6238

F18-39

6238

20M→21M

20.0 - 21.0 mi

Top 58%
×8story building
+106ft-24ft

Overall

16493

Females

5981

F18-39

5981

21M→35K

21.0 - 21.8 mi

Top 59%
×7story building
+17ft-86ft

Overall

16671

Females

6167

F18-39

6167

35K→23M

21.8 - 23.0 mi

Top 55%
×5story building
+23ft-63ft

Overall

15740

Females

5749

F18-39

5749

23M→24M

23.0 - 24.0 mi

Top 59%
×6story building
+12ft-82ft

Overall

16621

Females

6283

F18-39

6283

24M→40K

24.0 - 24.9 mi

Top 56%
×1story
+6ft-20ft

Overall

15939

Females

6019

F18-39

6019

40K→25.2M

24.9 - 25.2 mi

Top 69%
×1story
+13ft-16ft

Overall

19509

Females

7896

F18-39

7896

25.2M→Finish

25.2 - 26.2 mi

Top 100%
×2story building
+22ft-21ft

Overall

28373

Females

12216

F18-39

12216

Passing Analysis

Category:
Athletes Passed
2260
Passed By
5028
Net Change
-2768
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15913
5K → 10K107652+1024#15913#14889
10K → 15K269127+142#14889#14747
15K → 20K87695-608#14747#15355
20K → Half12141-129#15355#15484
Half → 25K55632-577#15484#16061
25K → 30K126519-393#16061#16454
30K → 20M102126-24#16454#16478
20M → 21M13387+46#16478#16432
21M → 35K7746+31#16432#16401
35K → 23M14767+80#16401#16321
23M → 24M8876+12#16321#16309
24M → 40K7365+8#16309#16301
40K → 25.2M1489-75#16301#16376
25.2M → Finish12306-2305#16376#18681
TOTALS22605028-2768
📊

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