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BOSTON MARATHON 2025

Joanna Choi

VA

Bib: 12410 F

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 27%
Gender (Female)
#0 / 12228
Top 10%
Division (F18-39)
#0 / 5469
Top 19%
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
7:07/mi
22:08
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
7:13/mi
44:34
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
7:09/mi
1:06:46
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
7:09/mi
1:28:58
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
6:58/mi
1:33:43
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
7:09/mi
1:51:04
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
7:29/mi
2:14:18
↑ 181↓ 1480.2%
138 ft elev
20M
7:33/mi
2:24:34
↑ 64↓ 500.2%
148 ft elev
21M
8:14/mi
2:32:48
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
7:16/mi
2:38:14
↑ 17↓ 861.7%
156 ft elev
23M
7:39/mi
2:47:49
↑ 23↓ 630.6%
116 ft elev
24M
7:28/mi
2:55:17
↓ 821.3%
34 ft elev
40K· 24.85 mi
7:42/mi
3:01:52
↓ 200.3%
20 ft elev
25.2M
8:22/mi
3:04:45
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
7:24/mi
3:12:17
↑ 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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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:33:43
Pace7:09 /mi
2nd Half
Distance13.11 mi
Time1:38:34
Pace7:31 /mi
📊Positive Split: 5.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:2322:087:0722:08
7:07
-
10K
6.21 mi11:12:4944:347:1022:26
7:13
+0:06
15K
9.32 mi11:35:011:06:467:1022:12
7:09
-0:04
20K
12.43 mi11:57:131:28:587:1022:12
7:09
0:00
Half
13.11 mi12:01:581:33:437:094:45
6:58
-0:11
25K
15.53 mi12:19:191:51:047:0917:21
7:09
+0:11
30K
18.64 mi12:42:332:14:187:1223:14
7:29
+0:20
20M
20.00 mi12:52:492:24:347:1410:16
7:33
+0:04
21M
21.00 mi13:01:032:32:487:178:14
8:14
+0:41
35K
21.75 mi13:06:292:38:147:175:26
7:16
-0:58
23M
23.00 mi13:16:042:47:497:189:35
7:39
+0:23
24M
24.00 mi13:23:322:55:177:187:28
7:28
-0:11
40K
24.85 mi13:30:073:01:527:196:35
7:42
+0:14
25.2M
25.20 mi13:33:003:04:457:202:53
8:22
+0:40
Finish
26.22 mi13:40:323:12:177:207:32
7:24
-0:58

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

6:58 /mi

Average Pace

7:20 /mi

Slowest Pace

8:22 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:28:38

46% of race

Time at Steady Pace

1:16:22

40% of race

Time at Slower Pace

27:17

14% of race

Average Pace: 7:20 /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 mi10:50:2322:087:0722:08
7:07
#8851
10K
6.21 mi11:12:4944:347:1022:26
7:13
#9220
15K
9.32 mi11:35:011:06:467:1022:12
7:09
#9015
20K
12.43 mi11:57:131:28:587:1022:12
7:09
#8633
Half
13.11 mi12:01:581:33:437:094:45
6:58
#8530
25K
15.53 mi12:19:191:51:047:0917:21
7:09
#8293
30K
18.64 mi12:42:332:14:187:1223:14
7:29
#8061
20M
20.00 mi12:52:492:24:347:1410:16
7:33
#7966
21M
21.00 mi13:01:032:32:487:178:14
8:14
#7939
35K
21.75 mi13:06:292:38:147:175:26
7:16
#7867
23M
23.00 mi13:16:042:47:497:189:35
7:39
#7782
24M
24.00 mi13:23:322:55:177:187:28
7:28
#7748
40K
24.85 mi13:30:073:01:527:196:35
7:42
#7726
25.2M
25.20 mi13:33:003:04:457:202:53
8:22
#7700
Finish
26.22 mi13:40:323:12:177:207:32
7:24
#7682
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi8851130913098682(Top 31%)1299(Top 11%)1299(Top 24%)
10K6.21 mi3.10 mi9220-3691466-1571466-1579671(Top 34%)1667(Top 14%)1667(Top 30%)
15K9.32 mi3.11 mi9015+2051402+641402+648682(Top 31%)1299(Top 11%)1299(Top 24%)
20K12.43 mi3.11 mi8633+3821264+1381264+1387805(Top 27%)1038(Top 8%)1038(Top 19%)
Half13.11 mi0.68 mi8530+1031232+321232+327379(Top 26%)877(Top 7%)877(Top 16%)
25K15.53 mi2.42 mi8293+2371159+731159+737330(Top 26%)974(Top 8%)974(Top 18%)
30K18.64 mi3.11 mi8061+2321138+211138+217600(Top 27%)1235(Top 10%)1235(Top 23%)
20M20.00 mi1.36 mi7966+951135+31135+37408(Top 26%)1303(Top 11%)1303(Top 24%)
21M21.00 mi1.00 mi7939+271156-211156-218795(Top 31%)2061(Top 17%)2061(Top 38%)
35K21.75 mi0.75 mi7867+721147+91147+97021(Top 25%)1294(Top 11%)1294(Top 24%)
23M23.00 mi1.25 mi7782+851165-181165-187626(Top 27%)1660(Top 14%)1660(Top 30%)
24M24.00 mi1.00 mi7748+341179-141179-147474(Top 26%)1642(Top 13%)1642(Top 30%)
40K24.85 mi0.85 mi7726+221213-341213-348094(Top 28%)2021(Top 17%)2021(Top 37%)
25.2M25.20 mi0.35 mi7700+261216-31216-37995(Top 28%)2053(Top 17%)2053(Top 38%)
Finish26.22 mi1.02 mi7682+181235-191235-198428(Top 30%)2239(Top 18%)2239(Top 41%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 31%
×21story building
+97ft-345ft

Overall

8682

Females

1299

F18-39

1299

5K→10K

3.1 - 6.2 mi

Top 34%
×5story building
+79ft-138ft

Overall

9671

Females

1667

F18-39

1667

10K→15K

6.2 - 9.3 mi

Top 31%
×3story building
+67ft-78ft

Overall

8682

Females

1299

F18-39

1299

15K→20K

9.3 - 12.4 mi

Top 27%
×5story building
+106ft-86ft

Overall

7805

Females

1038

F18-39

1038

20K→Half

12.4 - 13.1 mi

Top 26%
×2story building
+19ft-37ft

Overall

7379

Females

877

F18-39

877

Half→25K

13.1 - 15.5 mi

Top 26%
×4story building
+66ft-88ft

Overall

7330

Females

974

F18-39

974

25K→30K

15.5 - 18.6 mi

Top 27%
×9story building
+181ft-148ft

Overall

7600

Females

1235

F18-39

1235

30K→20M

18.6 - 20.0 mi

Top 26%
×5story building
+64ft-50ft

Overall

7408

Females

1303

F18-39

1303

20M→21M

20.0 - 21.0 mi

Top 31%
×8story building
+106ft-24ft

Overall

8795

Females

2061

F18-39

2061

21M→35K

21.0 - 21.8 mi

Top 25%
×7story building
+17ft-86ft

Overall

7021

Females

1294

F18-39

1294

35K→23M

21.8 - 23.0 mi

Top 27%
×5story building
+23ft-63ft

Overall

7626

Females

1660

F18-39

1660

23M→24M

23.0 - 24.0 mi

Top 26%
×6story building
+12ft-82ft

Overall

7474

Females

1642

F18-39

1642

24M→40K

24.0 - 24.9 mi

Top 28%
×1story
+6ft-20ft

Overall

8094

Females

2021

F18-39

2021

40K→25.2M

24.9 - 25.2 mi

Top 28%
×1story
+13ft-16ft

Overall

7995

Females

2053

F18-39

2053

25.2M→Finish

25.2 - 26.2 mi

Top 30%
×2story building
+22ft-21ft

Overall

8428

Females

2239

F18-39

2239

Passing Analysis

Category:
Athletes Passed
2219
Passed By
1050
Net Change
+1169
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8851
5K → 10K103472-369#8851#9220
10K → 15K28075+205#9220#9015
15K → 20K40321+382#9015#8633
20K → Half1063+103#8633#8530
Half → 25K25619+237#8530#8293
25K → 30K29967+232#8293#8061
30K → 20M14954+95#8061#7966
20M → 21M11588+27#7966#7939
21M → 35K9018+72#7939#7867
35K → 23M13651+85#7867#7782
23M → 24M8450+34#7782#7748
24M → 40K8159+22#7748#7726
40K → 25.2M4620+26#7726#7700
25.2M → Finish7153+18#7700#7682
TOTALS22191050+1169
📊

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