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BOSTON MARATHON 2025

Irina Basin

Bib: 18982•F

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 39%
Gender (Female)
#0 / 12228
Top 23%
Masters (Masters Women)
#0 / 6759
Top 10%
Division (F40-44)
#0 / 1718
Top 21%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:10
Rank: #11869
Start → 5K
23:10 | 7:27/mi
10K· 6.21 mi
46:21
Rank: #11780 (+89)
5K → 10K
23:11 | 7:28/mi
15K· 9.32 mi
1:09:26
Rank: #11531 (+249)
10K → 15K
23:05 | 7:26/mi
20K· 12.43 mi
1:32:56
Rank: #11450 (+81)
15K → 20K
23:30 | 7:34/mi
Half· 13.11 mi
1:38:02
Rank: #11463 (-13)
20K → Half
5:06 | 7:29/mi
25K· 15.53 mi
1:56:41
Rank: #11438 (+25)
Half → 25K
18:39 | 7:42/mi
30K· 18.64 mi
2:21:49
Rank: #11487 (-49)
25K → 30K
25:08 | 8:05/mi
20M
2:33:02
Rank: #11484 (+3)
30K → 20M
11:13 | 8:15/mi
21M
2:41:53
Rank: #11556 (-72)
20M → 21M
8:51 | 8:51/mi
35K· 21.75 mi
2:47:47
Rank: #11539 (+17)
21M → 35K
5:54 | 7:53/mi
23M
2:57:57
Rank: #11457 (+82)
35K → 23M
10:10 | 8:07/mi
24M
3:05:52
Rank: #11363 (+94)
23M → 24M
7:55 | 7:55/mi
40K· 24.85 mi
3:12:42
Rank: #11293 (+70)
24M → 40K
6:50 | 8:00/mi
25.2M
3:15:40
Rank: #11231 (+62)
40K → 25.2M
2:58 | 8:36/mi
Finish· 26.22 mi
3:23:24
Rank: #11149 (+82)
25.2M → Finish
7:44 | 7:35/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:02
Pace7:29 /mi
2nd Half
Distance13.11 mi
Time1:45:22
Pace8:02 /mi
📊Positive Split: 7.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:0823:107:2723:10
7:27
-
10K
6.21 mi11:37:1946:217:2823:11
7:28
+0:01
15K
9.32 mi12:00:241:09:267:2723:05
7:26
-0:02
20K
12.43 mi12:23:541:32:567:2923:30
7:34
+0:08
Half
13.11 mi12:29:001:38:027:295:06
7:29
-0:05
25K
15.53 mi12:47:391:56:417:3118:39
7:42
+0:13
30K
18.64 mi13:12:472:21:497:3625:08
8:05
+0:23
20M
20.00 mi13:24:002:33:027:3911:13
8:15
+0:10
21M
21.00 mi13:32:512:41:537:438:51
8:51
+0:36
35K
21.75 mi13:38:452:47:477:435:54
7:53
-0:58
23M
23.00 mi13:48:552:57:577:4410:10
8:07
+0:14
24M
24.00 mi13:56:503:05:527:457:55
7:55
-0:12
40K
24.85 mi14:03:403:12:427:456:50
8:00
+0:05
25.2M
25.20 mi14:06:383:15:407:462:58
8:36
+0:36
Finish
26.22 mi14:14:223:23:247:467:44
7:35
-1:01

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

7:26 /mi

Average Pace

7:46 /mi

Slowest Pace

8:51 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:00:22

89% of race

Time at Steady Pace

14:11

7% of race

Time at Slower Pace

8:51

4% of race

Average Pace: 7:45 /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 mi11:14:0823:107:2723:10
7:27
#11869
10K
6.21 mi11:37:1946:217:2823:11
7:28
#11780
15K
9.32 mi12:00:241:09:267:2723:05
7:26
#11531
20K
12.43 mi12:23:541:32:567:2923:30
7:34
#11450
Half
13.11 mi12:29:001:38:027:295:06
7:29
#11463
25K
15.53 mi12:47:391:56:417:3118:39
7:42
#11438
30K
18.64 mi13:12:472:21:497:3625:08
8:05
#11487
20M
20.00 mi13:24:002:33:027:3911:13
8:15
#11484
21M
21.00 mi13:32:512:41:537:438:51
8:51
#11556
35K
21.75 mi13:38:452:47:477:435:54
7:53
#11539
23M
23.00 mi13:48:552:57:577:4410:10
8:07
#11457
24M
24.00 mi13:56:503:05:527:457:55
7:55
#11363
40K
24.85 mi14:03:403:12:427:456:50
8:00
#11293
25.2M
25.20 mi14:06:383:15:407:462:58
8:36
#11231
Finish
26.22 mi14:14:223:23:247:467:44
7:35
#11149
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi118692724272411164(Top 39%)2456(Top 20%)2456(Top 143%)
10K6.21 mi3.10 mi11780+892690+342690+3411748(Top 41%)2690(Top 22%)2690(Top 157%)
15K9.32 mi3.11 mi11531+2492594+962594+9611164(Top 39%)2456(Top 20%)2456(Top 143%)
20K12.43 mi3.11 mi11450+812582+122582+1211300(Top 40%)2631(Top 22%)2631(Top 153%)
Half13.11 mi0.68 mi11463-132589-72589-711563(Top 41%)2722(Top 22%)2722(Top 158%)
25K15.53 mi2.42 mi11438+252616-272616-2711494(Top 40%)2843(Top 23%)2843(Top 165%)
30K18.64 mi3.11 mi11487-492726-1102726-11012027(Top 42%)3304(Top 27%)3304(Top 192%)
20M20.00 mi1.36 mi11484+32768-422768-4212183(Top 43%)3533(Top 29%)3533(Top 206%)
21M21.00 mi1.00 mi11556-722844-762844-7612617(Top 44%)3927(Top 32%)3927(Top 229%)
35K21.75 mi0.75 mi11539+172858-142858-1411481(Top 40%)3353(Top 27%)3353(Top 195%)
23M23.00 mi1.25 mi11457+822861-32861-310883(Top 38%)3170(Top 26%)3170(Top 185%)
24M24.00 mi1.00 mi11363+942843+182843+1810691(Top 38%)3132(Top 26%)3132(Top 182%)
40K24.85 mi0.85 mi11293+702843284310174(Top 36%)3014(Top 25%)3014(Top 175%)
25.2M25.20 mi0.35 mi11231+622828+152828+159507(Top 33%)2784(Top 23%)2784(Top 162%)
Finish26.22 mi1.02 mi11149+822824+42824+49867(Top 35%)2926(Top 24%)2926(Top 170%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 39%
×21stories
+97ft-345ft

Overall

11164

Females

2456

F40-44

2456

5K→10K

3.1 - 6.2 mi

Top 41%
×5stories
+79ft-138ft

Overall

11748

Females

2690

F40-44

2690

10K→15K

6.2 - 9.3 mi

Top 39%
×3stories
+67ft-78ft

Overall

11164

Females

2456

F40-44

2456

15K→20K

9.3 - 12.4 mi

Top 40%
×5stories
+106ft-86ft

Overall

11300

Females

2631

F40-44

2631

20K→Half

12.4 - 13.1 mi

Top 41%
×2stories
+19ft-37ft

Overall

11563

Females

2722

F40-44

2722

Half→25K

13.1 - 15.5 mi

Top 40%
×4stories
+66ft-88ft

Overall

11494

Females

2843

F40-44

2843

25K→30K

15.5 - 18.6 mi

Top 42%
×9stories
+181ft-148ft

Overall

12027

Females

3304

F40-44

3304

30K→20M

18.6 - 20.0 mi

Top 43%
×5stories
+64ft-50ft

Overall

12183

Females

3533

F40-44

3533

20M→21M

20.0 - 21.0 mi

Top 44%
×8stories
+106ft-24ft

Overall

12617

Females

3927

F40-44

3927

21M→35K

21.0 - 21.8 mi

Top 40%
×7stories
+17ft-86ft

Overall

11481

Females

3353

F40-44

3353

35K→23M

21.8 - 23.0 mi

Top 38%
×5stories
+23ft-63ft

Overall

10883

Females

3170

F40-44

3170

23M→24M

23.0 - 24.0 mi

Top 38%
×6stories
+12ft-82ft

Overall

10691

Females

3132

F40-44

3132

24M→40K

24.0 - 24.9 mi

Top 36%
×1story
+6ft-20ft

Overall

10174

Females

3014

F40-44

3014

40K→25.2M

24.9 - 25.2 mi

Top 33%
×1story
+13ft-16ft

Overall

9507

Females

2784

F40-44

2784

25.2M→Finish

25.2 - 26.2 mi

Top 35%
×2stories
+22ft-21ft

Overall

9867

Females

2926

F40-44

2926

Passing Analysis

Category:
Athletes Passed
2092
Passed By
1372
Net Change
+720
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11869
5K → 10K302213+89#11869#11780
10K → 15K31667+249#11780#11531
15K → 20K224143+81#11531#11450
20K → Half3144-13#11450#11463
Half → 25K167142+25#11463#11438
25K → 30K212261-49#11438#11487
30K → 20M122119+3#11487#11484
20M → 21M82154-72#11484#11556
21M → 35K6144+17#11556#11539
35K → 23M14563+82#11539#11457
23M → 24M13642+94#11457#11363
24M → 40K10636+70#11363#11293
40K → 25.2M7311+62#11293#11231
25.2M → Finish11533+82#11231#11149
TOTALS20921372+720
📊

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